1 - The radioactive isotope of hydrogen is called___________?
tritium
2 - Electron was discovered by?
J.J Thomson
3 - Sodium carbonate is produced by____________?
Amonia solvay process
4 - Which of the following is a substance?
Graphite
5 - Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?
metallic substances
6 - All of the following substances are crystalline except_____________?
Plastic
7 - Covalent network crystals have_____________?
higher melting point then molecular crystals
8 - What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?
Gun Powder
9 - Diameter of an atom is in the order of________________?
0.2nm
10 - Mass spectrometer is used to determine Mass number of isotopes and___________________?
Relative abundance
11 - The number of peaks obtained in mass spectrometry shows____________________?
Number of isotopes
12 - Empirical formula of chloroform is____________________?
CHCL3
13 - Molecular mass of water (18g) means__________________?
all
14 - Which of the following statements about isotopes is correct ?
Isotopes with even atomic number and even mass number are abundant
15 - The number of isotopes of elements with even mass number and even atomic number are ________________?
154
16 - Which of the following terms is not used for ionic compound ?
molecular formula
17 - moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?
0.18 mole
18 - Which one of the following has the maximum number of isotopes ?
tin
19 - 1 a.m.u =__________________?
1.6 x 10-27 kg
20 - Which of the following are isoelectronic species ?
F- Ne Na+
21 - Molecular ions are formed by passing______________________?
All of the above
22 - Which one is true about isotope ?
Same chemical properties
23 - Which of the following ion formation is always exothermic ?
Uni-negative
24 - The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
Gas
25 - Avogadros number may represent_________________?
All of the above
26 - Size of molecule depends upon________________?
Both A and B
27 - Which of the following terms is used for the mass of chlorine 35.5 ?
relative atomic mass
28 - Which one of the following is not the mono isotopic element ?
uranium
29 - The mass of decimole of electrons (NA) is___________________?
0.054 mg
30 - Which of the following statements is wrong about isotopes ?
they possess different position in the periodic table
31 - Qualitative analysis is carried out for _________________?
identification of elements
32 - Combustion analysis is performed to determine__________________?
Empirical formula
33 - Isotopes differ in_________________?
properties which depend upon mass
34 - Which of the following methods is used to estimate hydrogen in an organic compound ?
Combustion method
35 - The nucleus of an atom of every element will always contain____________________?
protons
36 - When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?
2
37 - Dempsters mass spectrometer has number of zones / parts_________________?
5
38 - All the following variables are used to describle gases except__________________?
density
39 - Methyl alcohol is not used as___________________?
a substitute for petrol
40 - Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
40cm3/min
41 - As a substance moves from a solid to a liquid all of the following changes occur except ?
K.E of the molecules decreases
42 - The rectified spirit is________________?
95% alcohol
43 - Which of the following solids show anisotropy___________________?
None of the above
44 - Butyl chloride gives possible isomers ?
4
45 - Metallic crystals are soluble in________________?
Fused metal
46 - Paramagnetic behaviour of substance is measured by a balance called___________________?
Guoys balance
47 - Which of the following properties prove that cathode rays are material in nature_________________?
they possess momentum
48 - When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?
0.33 nm
49 - 1 mole of electron has mass in microgram_________________?
5.5 x 10-4
50 - The use of antifreeze in the automobile radiator is an important application of__________________?
colligative property
51 - At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?
Ag
52 - In which of the following type of reactions energy of reactant is greater than energy of product________________?
exothermic
53 - Which of following metals can be displaced by all other metals from its solution ?
Au
54 - Which of the elements do not fall in stair case of the modern periodic table__________________?
None of the above
55 - Across short period the melting and boiling point increase upto __________________?
IVA group
56 - Which of the following is the formula of chrome red ?
Pb3 O4
57 - Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?
Secondary structure
58 - In the van der Waals equation (P + n2a / v2) (v - nb) = nRT which of the following statement is not true ?
at high densities the equation reduces to the ideal gas law
59 - The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?
alkaline aquenous iodine
60 - When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
a hydroxy group makes the benzene ring more susceptible to electrophilic attack
61 - If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?
?273.16?C
62 - Benzene is a good solvent for__________________?
all the above
63 - Which of the following element doesnot show allotropy_________________?
Nitrogen
64 - Purines and pyrimidines are_________________?
Nitrogenous bases
65 - All the transition elements show_________________?
None
66 - In solids the temperature is the measure of__________________?
Vibrational kinetic energy
67 - Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?
aluminium is resistant to corrosion by organic acids.
68 - On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
brick red
69 - What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
2
70 - Which catalyst is used in contact process ?
V2O5
71 - Which of the following elements has greater 1st ionization energy__________________?
N
72 - Which of the following molecule is polar__________________?
none of the above
73 - Which of the following points are important in connection with equilibrium constant ?
All of the above
74 - Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?
3.2 x 10-11
75 - The unit of molality is__________________?
moles kg-1
76 - A solution can be both____________________?
dilute and concentrated
77 - Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?
10
78 - Which of the following elements react with steam to produce H2 gas?
All of the above
79 - The unit of the rate constant (k) is same as that of rate of reaction________________?
Zero order reaction
80 - Acid present in acid rain may be_________________?
both A and B
81 - Which of the following elements conduct electricity and also melts below 100°C ?
Sodium
82 - The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
Ethylene bromide
83 - Isotopes differs in______________________?
chemical properties
84 - The volume occupied by 1.4g CO at S.T.P is___________________?
1.12 dm3
85 - Water absorber used in combustion analysis is___________________?
Mg (CIO4)2
86 - The type of filtering media used for filtration depending upon____________________?
Nature of precipitate
87 - A method of separation of components from its solution using Distribution law is ___________________?
Solvent extraction
88 - Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?
one / three
89 - The molecules of CO2 in dry ice form__________________?
Molecular crystal
90 - Only London dispersion forces are present among the_________________?
Molecules of solid iodine
91 - Quantum number values for 3p orbitals are____________________?
n=3 l=1
92 - Which specie has unpaired electrons in antibonding molecular orbitals_______________?
N2-2
93 - For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?
qp > qv
94 - Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is__________________?
1.414 x 10-5 mol dm-3
95 - Which of the following solution has the highest boiling point ?
5.85% NaCl Solution
96 - Which of the following can be used in laptops ?
Nickel cadmium cell
97 - Which is the unit of (K) rate constant for zero order reaction ?
mol dm-3 s-1
98 - Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
Ethane
99 - For industrial preparation of CH3CHO catalytic promoter is_________________?
Cu2Cl2
100 - Which of the following is not a fatty acid ?
Phthalic acid
101 - Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?
Urea
102 - Chlorination of water may be harmful if the water contains_________________?
Carbon dioxide
103 - The mass of one mole of electron is________________?
0.55
104 - The number of atoms in a molecule determines________________?
atomicity
105 - Which element has same isotopes like palladium___________________?
Calcium
106 - A limiting reactant is one which________________?
gives the minimum amount of the product under consideration
107 - A safe and more reliable method for drying the crystal is__________________?
Vacuum desiccator
108 - A real gas obeying vander waals equation will resemble the ideal gas if_______________________?
Both a and b are small
109 - Plasma is used in_________________?
All of these
110 - Which of the following is pseudo solid_____________________?
Glass
111 - Bohrs model is contradicted by__________________?
Heisenbergs uncertainty principle
112 - Atomic radius can be determined by_________________?
X - ray diffraction
113 - For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
2NO2 N2H4
114 - 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
one/fifty one
115 - Stronger is the oxidizing agent greater is the___________________?
standard reduction potential
116 - Which is true about Zn-Cu galvanic cell ?
Anode is negatively charged
117 - Nitrates of which pair gives different products on thermal decomposition___________________?
Li Na
118 - Keeping in view the size of atom which is in correct order___________________?
Ba > Mg
119 - Which one is not the use of silicones________________________?
Medicine
120 - Chemical composition of cinnabar is____________________?
HgS
121 - When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?
Disproportionation reaction
122 - In the complex [Cr(OH)3(H2O)3] the coordination number is __________________?
6
123 - A great variety of the organic compounds is due to its property of carbon_________________?
Exhibit catenation
124 - Vinyl acetylene combines with hydrochloric acid produces___________________?
Chloroprene
125 - When toluene reacts with chlorine in sunlight the first major product is__________________?
Benzy1 chloride
126 - Which one of the following is not a good leaving group ?
OH-
127 - The process of fermentation involves all the enzymes except__________________?
Sucrase
128 - Which one does not exhibit aldol condensation___________________?
Benzaldehyde
129 - The common name of propane -1 3-dioic acid is____________________?
Malonic acid
130 - Industrial materials thermal power stations are coated with__________________?
Epoxy paints
131 - Main source of organic compounds is__________________?
Animal
132 - Hydro carbons which burn with smoky flame are called_________________?
Aromatic
133 - Octane number 2 2 4-trimethyl pentane is__________________?
100
134 - Geometric isomerism is usually found in___________________?
Alkenes
135 - Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have________________?
Low melting points
136 - According to vital force theory_______________?
organic compounds cannot be synthesized from inorganic compounds
137 - A double bond consists of __________________?
One sigma and one Pi bonds
138 - Chemical properties of first member of homologous series with respect to other members are_________________?
same
139 - Compounds having same molecular formula but differ in structural formula are called __________________?
isomer
140 - Organic compounds are soluble in ____________________?
non-polar solvent
141 - Methane is used in power generation in chemical industries being a__________________?
cheaper
142 - The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight____________________?
pyrolysis
143 - The metallic sound produced by engine due to the pre-ignition of fuel is called _______________?
knocking
144 - Which of the following can be used as anti-knocking agent ?
(C2H5)4 Pb
145 - Isomerism which is present only in alkene is__________________?
cis-trans isomerism
146 - Compound containing benzene ring in their structure are __________________?
aromatic
147 - Which of the following is an amide________________?
RCONH2
148 - Only sigma bonds are present in__________________?
ethoxy ethane
149 - The structure of ethyne is_________________?
linear
150 - The general formula of cycloalkene is __________________?
CnH2n-2
151 - C5H12 has the number of isomers ___________________?
three
152 - Octane number can be improved by________________?
All
153 - Octane number 2 2 4-trimethyl pentane is________________?
100
154 - Propene can exhibit________________?
none of the above
155 - Pentane and 2-methyl butance have the same_______________?
Percentage composition
156 - The first organic compound was synthesized in laboratory by_________________?
Wohler
157 - First organic compound synthesized in laboratory was _________________?
urea
158 - The property of carbon chain formation is called _________________?
catenation
159 - The organic compounds having very high molecular weight are called _________________?
polymers
160 - Rate of reactions of most organic compounds are____________________?
slow
161 - Coal is produced after a long time decay of_________________?
wood
162 - Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________?
sedimentary rocks
163 - At low temperature and pressure cracking can be done in presence of catalyst________________?
Al2O3 and SiO2
164 - Which one of the following compounds shows intense knocking ?
n-heptane
165 - Ether functional group can be represented as ____________________?
R-O-R
166 - A single atom or group of atoms which gives characteristic properties to a compound is called_________________?
functional group
167 - 2-propanol and 1-propanol show the isomerism________________?
position isomerism
168 - In sp3 hybridization the expected geometry of molecules will be__________________?
tetrahedral
169 - In cyano group the carbon atom shows which kind of hybridization___________________?
sp
170 - the fractional distillation of petroleum produces gasoline up to ________________?
0.2
171 - Which is not heterocyclic compound _______________?
Aniline
172 - Which one is not state function ________________?
Work
173 - If internal energy of the system is increased ____________________?
All
174 - A reaction has values of ?H and ?S which are both positive. The reaction __________________?
Is non-spontaneous
175 - The environment in which a system is studied is __________________?
surrounding
176 - Anything which depends upon initial and final state of a system is_______________?
state function
177 - Reaction in which heat evolves is called ____________________?
exothermic
178 - Pumping of water uphill is_______________?
non-spontaneous process
179 - Which one of the following is a state function ________________?
all of the above
180 - Enthalpy of a reaction can be measured by ____________________?
glass calorimeter
181 - Most of thermodynamic parameters are_________________?
state functions
182 - Two fundamental ways to transfer energy are________________?
heat and work
183 - Enthalpy change can be_________________?
both A and B
184 - Enthalpy of combustion for food fuel and other compounds can be measured accurately by________________?
bomb calorimeter
185 - When enthalpy of reactants is higher than product then reaction will be_________________?
exothermic
186 - State function the macroscopic property of system depends upon________________?
initial and final state
187 - CuSO4 + Zn?ZnSO4+Cu is___________________?
Spontaneous reaction
188 - Total energy of a system is_________________?
P.E + K.E
189 - Unit of heat in SI system is________________?
J
190 - ________________ is study about energy of a chemical system ?
thermochemistry
191 - Which of the following has strongest intermolecular forces of attraction ?
lodine (I2)
192 - When substance moves from a solid to a liquid state all of the following changes occur except__________________?
K.E of the molecules decreases
193 - In order to mention the boiling point of water at 110°C the external pressure should be ?
Between 760 torr and 1200 torr
194 - Vapour pressure of water at 100°C is___________________?
760 mm Hg
195 - Liquid crystal is discovered by __________________?
Fredrack Reinitzer
196 - Hydrogen bonding is involved in____________________?
All
197 - Forces of attraction which may be present between all kinds of atoms and molecules are _____________________?
van der Waal
198 - The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
vaporization
199 - Water has maximum density at __________________?
4 °C
200 - Formation of vapours from the surface of a liquid is called________________?
evaporation
201 - The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?
Dipole-dipole forces
202 - Vapour pressure is not affected by_______________?
Surface area
203 - Table salt crystallizes with a______________________?
body centered cubic lattice
204 - During which process empty spaces between particles become minimum ?
condensation
205 - Which one of the following has highest volatility_________________?
Diethyl ether
206 - If we provide very high amount of heat to a liquid its boiling point will__________________?
remains constant
207 - A solid may be made up of_________________?
A, B, and C
208 - Amorphous substances posses_________________?
No sharp melting points
209 - Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
More strength of London forces
210 - The phenomenon in which a compound exists in two or more crystalline forms is called ________________?
Polymorphism
211 - Bucky balls is an allotropic from of__________________?
Carbon
212 - Isomorphic substances have _______________?
Different physical and chemical properties
213 - The pressure during the molar heat of fusion is kept________________?
one atmosphere
214 - All the enthalpy changes are________________?
May or may not be A or B
215 - Which has strongest bonding in the solid state ?
Sodium Chloride (NaCI)
216 - When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?
ABAB (hexagonal)
217 - Which one is false for evaporation ?
Exothermic
218 - Which one of the following does not show hydrogen bonding?
Diethyl ether
219 - Which one is a conductor but is not malleable ?
Graphite
220 - The density of water may be__________________?
Greater than that of ice
221 - Steam causes more sever burn than the boiling water because it possesses _________________?
Latent heat of vaporization
222 - The conversion of vapours back into their liquid state is called__________________?
condensation
223 - When water freezes at 0°C its density decreases due to_______________?
Empty space present in the structure of ice
224 - The boiling point increases down the zero group element due to_________________?
London forces
225 - Rising of a wetting liquid in a capillary tube is due to__________________?
Adhesive forces
226 - The number of formula units in 29.25g of common salt_________________?
3.01 x 1023
227 - Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?
Liquid molecules can slide over each other
228 - Molar heat of vaporization of water is_________________?
40.7 KJ/mole
229 - Crystallites are present in_________________?
amorphous solids
230 - A malleable solid is one which can be_________________?
Converted into thin sheets
231 - Crystalline solids can be identified easily from their ___________________?
Sharp melting point
232 - The viscosity of solids is________________?
Infinite
233 - Which solids are called true solids _______________?
Crystalline
234 - The number amino acid units for each turn of helix on average are____________________?
27
235 - If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?
Enthalpy change
236 - The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________?
Molar heat of vapourization
237 - All of the following were theorized by Bohr in his description of the atom except__________________?
Electrons radiate energy continuously in a given orbit.
238 - The magnetic quantum number (QN) has its values determined directly by the value of_______________?
Azimuthal (QN)
239 - The maximum number of electron in a sub shell with ? = 3fs______________?
14
240 - When an atom absorbs energy the lines in the spectrum will appear which are_________________?
Darker
241 - Which one is not true about cathode rays ?
Cannot ionize
242 - Rutherfords planet like structure was defective and unsatisfactory because_________________?
all
243 - Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
Zeemans effect
244 - Which one of the following explain the shape of orbitals _________________?
Azimuthal quantum number
245 - Pressure in gas discharge tube was kept________________?
0.01 torr
246 - Angle of deflection was studied by________________?
J.Perrin
247 - Positive rays give flash on________________?
ZnS
248 - The value of e/m ratio of electron is________________?
1.7588 x 1011 C/kg
249 - Planks theory says energy is emitted__________________?
Discontinuous manner
250 - 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?
4-times
251 - The correct electronic configuration of Cu is ___________________?
[Ar]3d104s1
252 - Atomic orbits having same energy are called________________?
Degenerate orbitals
253 - When electrons collide with heavy metals than ___________ are produced?
X-rays
254 - Atom with higher atomic number produces X-rays of__________________?
Shorter wavelength
255 - Space around nucleus where finding probability of electrons is maximum is called ____________________?
Orbital
256 - Electronic configuration of K is_________________?
[Ar]4s1
257 - Milikan used ______________ in his atomizer?
Oil
258 - Spectrum is produced due to________________?
Different wavelength
259 - When electron jump into orbit 1 then series obtained is___________________?
Lyman
260 - Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________?
Stark effect
261 - Three quantum number have been derived from equation of____________________?
Schrodinger
262 - The letters s p d and f are used to represent which quantum numbers________________?
Azimuthal
263 - The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?
7
264 - Colour of fluorescene produced by cathode rays depends upon________________?
Composition of glass
265 - Positive rays are produced__________________?
By the bombardment of cathode rays on gas molecules
266 - The relationship between energy of a photon of light and its frequency is given by________________?
Plancks Quantum theory
267 - The velocity of the photon____________________?
Is independent of wavelength
268 - Atom cannot be divided into simple unitstheorized by________________?
Dalton
269 - The number of fundamental particles in an atom of the lightest isotope carbon are_______________?
18
270 - Increase in atomic number is observed during_________________?
Beta emission
271 - Free neutron changes into proton with the emission of__________________?
Both A & B
272 - Charge of electron was measured by__________________?
Millikan
273 - Rutherford bombarded _________________ particles in discovery of nucleus?
Alpha-rays
274 - The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?
7
275 - Pfund series are produced in the spectrum of hydrogen atom__________________?
when electrons jump down to 5th- orbit
276 - Sommerfelds modification in Bohrs model is_______________?
Orbit is elliptical
277 - Wavelength of electron was verified by_________________?
Davisson and Germer
278 - Quantum number which tells the energy of electron is________________?
n
279 - _______________ can expel proteons from paraffins ?
Neutron
280 - Centrifugal forces are balanced in atom by__________________?
Attractive forces
281 - When 6d orbital is complete the entering electron goes into_________________?
7p
282 - Neutrons moving with an energy of 1.2 MeV are called_______________?
Fast neutrons
283 - Which of the following way in used for classification of chromatography ?
All
284 - Which of the following technique is used for the separation of insoluble particles from liquids ?
Filtration
285 - Fluted filter paper is used to__________________?
Increase the rate of filtration
286 - A substance having very high vapour pressure at its melting point on heating will show_______________?
Sublimation
287 - A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?
Ascending chromatography
288 - Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________?
Analytical chemistry
289 - Estimation of amounts of different components in a sample is________________?
Quantitative analysis
290 - The solid which is left over the filter paper as a result of filtration_________________?
residue
291 - Gooch Crucibles are made up of________________?
porcelain
292 - Sintered crucible is made up of________________?
glass
293 - Separation of a solid from its hot saturated solution by cooling is called__________________?
crystallization
294 - Which of the following technique is simple and efficient to purify a substance____________________?
Solvent extraction
295 - 95% ethanol is called_________________?
rectified spirit
296 - Ratio of the amount of solute in organic and aqueous solvent is________________?
Distribution co-efficient
297 - Animal charcoal adsorbs the coloured_________________?
impurities
298 - Crystallization does not involve_______________?
sublimation
299 - In CCI4 I2 shows________________?
Purple colour
300 - Direct conversion of solids into vapours is called ___________________?
sublimation
301 - Without suction pump filtration is __________________?
Slow process
302 - The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?
drying agent
303 - In solvent extraction ether is used to separate products of organic synthesis from________________?
water
304 - In crystallization if the solvent is inflammable then direct heating is________________?
avoided
305 - Rate of filtration can be increased by applying gentle suction______________?
Filter paper
306 - Size of filter paper is selected according to the amount of__________________?
amount of insoluble solute
307 - The tip of funnel should touch the wall of the breaker in order to avoid____________________?
splashing
308 - The technique used to separate components of mixture in solid phase ?
Sublimation
309 - Identification of the components of a sample is_________________?
Qualitative analysis
310 - Different components of a mixture have different Rf values due to________________?
Their different distribution coefficients in the solvent
311 - A process controlled by Distributive law is__________________?
Solvent extraction
312 - Safe and the most reliable method of drying crystals is through_________________?
Vacuum desiccators
313 - Silica gel and alumina are used as __________________?
Stationary phase
314 - The solvent or mixture of solvents used for separation of compounds is called____________________?
Mobile phase
315 - Sintered glass is a porous material used for ___________________?
filtration
316 - Which is not related pair of term used in analytical techniques________________?
Sublimate sublimation
317 - The major steps involved in complete quantitative analysis are _________________?
4
318 - Selection of filter paper depends on size of particles to be________________?
filtered
319 - Which is not a sublime material_______________?
Potash alum
320 - Shaking two immiscible liquids increases_________________?
Area of contact
321 - The ionization energy__________________?
Generally increases from left to right in a period
322 - Which type of bond is formed by overlap of p orbitals _______________?
Both
323 - The octet rule does not always hold for which of the following elements _________________?
P
324 - Which of the following is the best explanation that CO2 is non polar molecule __________________?
Dipole moment is zero
325 - Which one is not the absolute term of the element _________________ ?
Electro negativity
326 - In O2 each oxygen atom is hybridized_________________?
sp2
327 - Measurement of the degree of polarity is___________________?
Dipole moment
328 - A specie with maximum number of unpaired electrons ?
NH-2
329 - Force responsible to hold atoms together in a compound is called ________________?
Bond
330 - In a period the atomic radius ?
Decreases
331 - Energy required to remove electron from an atom______________?
Ionization potential
332 - Greater shielding effect corresponds to ionization energy value___________________?
Lesser
333 - Energy released or absorbed when electrons are added in atom is_________________?
Electron affinity
334 - Elements of group IA IIA are _________________?
Electropositive
335 - Mostly ionic compound are produced in between elements of_________________?
IA IIA and VIIA
336 - The Lewis acids are__________________?
Electron deficient
337 - The geometry of ammonia is___________________?
Trigonal Pyramidal
338 - By combining n atmic orbitals no. of hybrid orbitals will be__________________?
n
339 - Geometry of simple molecule having sp3 hybrid orbital is ___________________?
Tetrahedral
340 - Pi bonds are produced by overlapping of__________________?
Un-hybrid orbitals
341 - Molecular orbital which have higher energy than atomic orbitals is called___________________?
Antibonding molecular orbital
342 - Bond order for N2 molecule is __________________?
3
343 - Unit of dipole moment is_________________?
Debye
344 - The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?
Electro negativity
345 - Which of the following will have highest value of electron affinity_________________?
Cl
346 - Which of the solid does not contain covalent bond________________?
Copper
347 - Shielding effect across the period ________________?
Constant
348 - Which one has maximum number of unpaired electrons ?
7Y
349 - Molecular orbitals are filled according to _________________?
All these
350 - Which one shows high %age of the ionic character ?
HF
351 - Which of the following have their outer most shell complete in atomic form ?
Noble gases
352 - Energy of atom in compound is___________________?
Lesser than individual
353 - An atom loses or gains electrons to__________________?
all are accurate justifications
354 - In a group ionic radius ?
Increases
355 - Ionization energy in a period generally ___________________?
Increases
356 - Elements having high I.P values are____________________?
Non metals
357 - In a period electronegativity from left to right_________________?
Increases
358 - Ionic bond is produced after complete transfer of ________________ ?
Electrons
359 - Bond will beionic when E.N difference of bonded atom is ____________________?
Greater than 1.7
360 - Which one of the following has polar covalent bond ?
HF
361 - Sharing of 1 electron pair by one specie forms_________________?
Coordinate covalent bond
362 - Orbitals of same energy produced after mixing of orbitals of different energy are called __________________?
Degenerate orbitals
363 - Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?
3 bond pair one lone pair
364 - According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________?
Trigonal bipyramidal
365 - Unpaired electron in a molecule gives ______________ character ?
Paramagnetic
366 - Product of charge and distance is called__________________?
Dipole moment
367 - on sp3 hybridization ________________?
One s and 3 p-orbitals are involved
368 - Which state of matter has the lowest density ?
Gas
369 - The solid particles only posses_____________________?
Vibrational motion
370 - If 1/V is plotted on X-axis and pressure on Y-axis at constant temperature what should appear ________________?
Straight line
371 - One mole of an ideal gas at 546.5 K under 2 atm pressure has a volume of________________?
22.414 dm3
372 - Which one is not the partial pressure of oxygen in the lungs ?
1 atm
373 - The kinetic molecular theory of gases was put forward in 1738 by _____________________?
Bernoulli
374 - Hydrogen effuses four times more rapidly than volume of an unknown gas molar mass of unknown gas should be_______________?
32 gmol-1
375 - The processes of effusion and diffusion are best understand by________________?
Grahams law
376 - The non-ideal behaviour results chiefly from________________?
Intermolecular attractions and finite volume
377 - Linds method is employed for__________________?
Liquefaction of gases
378 - Which of these gases diffuse more quickly than oxygen ?
NO
379 - The weakest (in strength) of the following intermolecular forces is_______________?
Vander Waals force
380 - Which of the following statements is true about plasma________________?
All of the above
381 - 0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same_____________?
Both B and C
382 - Which of the following option is incorrect about gases ?
All molecules move with same speed
383 - In how many forms do matter exists ?
Four
384 - What is the abundant form of matter on earth ?
Solid
385 - For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature ?
1/3dm3
386 - Which one is the right value for R ?
0.0821 atm dm3k-1mol-
387 - The partial pressure exerted by the water vapours is called_______________?
Aqueous tension
388 - The spreading of fragrance or scent in air is due to_______________?
Diffusion
389 - The highest temperature at which a substance can exist as a liquid is called its______________?
Critical temperature
390 - What do we call to sudden expansion of plasma ?
Joule Thompson effect
391 - What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume ?
98.5 atm
392 - Who made volume and pressure correction to explain deviation of gases from ideal behaviour ?
Vander waal
393 - The gases become non-ideal at ________________?
Low temperature and high pressure
394 - The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is_________________?
2.7
395 - If a buffer solution of higher pH than seven is to be made we use___________________?
Weak acid and its salt with strong base
396 - AgCl dissolved with conc (2×10-2) Ksp will be__________________?
4 x 10-4
397 - Which of the following will not change the concentration of ammonia at the equilibrium ?
Addition of catalyst
398 - For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ?
Kc is equal to Kp if the total moles of reactants and products are equal
399 - Which one of the following aqueous solutions will be basic ?
Na2CO3
400 - Reaction which proceeds in both directions is called_______________?
reversible
401 - Conversion of reactant into product in unit time is called________________?
rate of forward reaction
402 - Unit of Kc is_______________?
Kc may or may not have units
403 - Rate expression for ammonia synthesis is___________________?
Kc=4x2v2/(a-x)(b-3x)3
404 - Catalyst used to speed up the reaction of ammonia synthesis is________________________?
Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2
405 - By the addition of base in waterpH will be_______________?
more than 7
406 - Negative log of mular concentration of H+ ions is called___________________?
pH
407 - Any substance which accepts H+ is base favours the concept___________________?
Lowrys
408 - When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called_________________?
solubility product
409 - Addition of CH3COOH and CH3COONa gives in water_______________?
both B & C
410 - Solubility of any salt can be determined from_______________?
Ksp
411 - By decreasing the pressure the reaction will go to that direction where_________________?
volume increased
412 - Equilibrium state is achieved quickly by the addition of ________________?
catalyst
413 - Which one of the following is a buffer solution ?
blood
414 - Solution having the property of a very little change in pH on adding a small amount of strong acid or base is called________________?
buffer solution
415 - Conjugated base of a weak acid is_________________?
strong
416 - Kc value has_______________?
Both A & B
417 - Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?
2
418 - In which of the following equilibria will Kc and Kp have the same value ?
N2 + O2 = 2NO
419 - Which of following is not a base______________?
BF3
420 - Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?
0.4 mole of NH3 with 0.2 mole of HCI
421 - Chemical equilibrium state is_______________?
dynamic state
422 - At start of reaction the concentration of reactants is_______________?
high
423 - In case of gases Kc is replaced by_______________?
Kp
424 - When the value of Kc is very small then_______________________?
product conc. Is maximum
425 - Idea of pH and pOH was put forward by________________?
Sorenson
426 - Ka<10-3 means______________?
Very weak acid
427 - Which of the following is a macro nutrient ?
carbon
428 - Three elements needed for the healthy growth of plants are_________________?
N P K
429 - Residence time of methane in the atmosphere is___________________?
3 - 7 years
430 - Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?
all of the above
431 - Acid present in acid rain may be__________________?
both A and B
432 - Which of the following is not a condition for the formation of smog ?
winds
433 - In which of the following layer of atmosphere there is more thickness of ozone layer ?
stratosphere
434 - Which of the following air pollutants is more dangerous for ozone layer ?
CFC
435 - Which statement is wrong ?
the amount of ozone layer is greater in the region close to the equator
436 - In the purification of portable water the coagulant used is_________________?
alum
437 - Newspaper can be recycled again and again how many times ?
5
438 - The main pollutant of leather tanneries in the waste water is____________________?
chromium IV
439 - Which substance can be used for disinfecting water ?
KMnO4
440 - Which one of the following makes the bulk of hydrospheres content ?
oceans
441 - The percentage of suspended solid waste in raw water is removed by coagulation is__________________?
80
442 - The main product of bacterial action is_________________?
NO
443 - Pollutants have adverse effect over_________________?
Ecosystem
444 - Which of the following is not a heavy industry ?
none
445 - Requirement of macronutrient per acre of the land is_________________?
5 to 200 kg
446 - Which of the following is not a secondary pollutant_________________?
carbon dioxide
447 - Major cause of SO2 on global scale is__________________?
volcanoes
448 - The yellow colour in photochemical smog is due to presence of__________________?
nitrogen dioxide
449 - Which of the following is not primary pollutant__________________?
H2SO4
450 - Which of the following gases is the main cause of acid rain ?
NO2
451 - Which of the following factors help to measure quallity of water ?
all of the above
452 - A single chlorine free radical can destroy how many ozone molecules ?
100000
453 - Chlorination of water may be harmful if the water contains_________________?
Ammonia
454 - Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?
both B & C
455 - Ozone hole is substantial depletion of ozone in every year during__________________?
Sep - Nov
456 - Which of the following solutions of H2SO4 is more concentrated ?
1 Molar solution
457 - Which of the following is an example of liquid in gas solution?
Fog
458 - Which of the following are the conditions of colligative properties_______________?
All of the above
459 - When common salt is dissolved in water ?
Boiling point of water increase
460 - Homogeneous mixture of two or more than two compounds is called__________________?
solution
461 - Solution with maximum concentration of solute at given temperature is called________________?
saturated solution
462 - Number of moles in 1 kg of solvent is called_________________?
molality
463 - In partially miscible liquids the two layers are___________________?
saturated solutions of each liquid
464 - The relative lowering of vapour pressure is_____________________?
both B & C
465 - Mixtures which distill over without change in composition called___________________?
azeotropic mixture
466 - Solubility of KCIO3 gives__________________?
continuous and rising solubility curve
467 - Boiling point elevations can be measured by__________________?
Landsbergers method
468 - The compounds in which water molecules are added are called_______________?
hydrates
469 - Solution of Na2SO4 will be_________________?
neutral
470 - 1 molar solution of glucose in water contains weight of glucose________________?
180g/dm3
471 - Water of crystallization can be removed by________________?
heating
472 - Which one of the following salt does not hydrolyzed________________?
Na2SO4
473 - Which of the following unit of concentration is independent of temperature ?
Molality
474 - The molal boiling point constant is the ration of the elevation of boiling point to____________________?
Molality
475 - Which has the minimum freezing point ?
One molal CaCI2
476 - Which of the following substance do not show continuous solubility curve ?
Na2SO4. 10H2O
477 - Every sample of matter with uniform properties and fixed composition is called_________________?
phase
478 - The component of solution which is in smaller amount is called_________________?
solute
479 - 10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?
% v/v
480 - 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?
1 M
481 - If the volume of solution is equal to sum of volumes of its all components then the solution_____________?
will be an ideal solution
482 - The solution which distils over with change in composition________________?
zeotropic solution
483 - Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________?
solubility
484 - The determination of correct molecular weight from Raoults law is applicable to_________________?
non volatile solute in a dilute solution
485 - Beckmanns apparatus is used to measure_______________?
depression in freezing point
486 - Hydration is a process in which_________________?
Both ions and molecules are surrounded by water molecules
487 - ppm means________________?
parts of solute in one million parts of solution
488 - The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?
dilute
489 - If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
Colour of the solution becomes fade
490 - Which has maximum oxidation number ?
Mn
491 - In an electrolytic cell current flows ?
From anode to cathode outside the cell
492 - In a galvanic cell________________?
Chemical energy is converted into electricity
493 - Molten NaCl conducts electricity due to the presence of_______________?
Free ions
494 - Electricity in voltaic cell is produced due to_________________?
both B & C
495 - In electrolytic cell electricity carries________________?
non-wpontaneous reaction
496 - In Galvanic cell electrons flow from anode to cathode through__________________?
external electric circuit
497 - For the measurement of standard electrode potential Zn is dipped in________________?
1 M ZnSO4 solution
498 - Voltaic cell can be recharged by______________?
by replacing external circuit with external source of electricity
499 - H2 gas in SHE is filled at pressure of___________________?
760mm of Hg
500 - Chemical used in salt bridge is________________?
KCI
501 - List of elements based on hydrogen scale is called________________?
electrochemical series
502 - In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be________________?
greater
503 - Greater value of standard reduction potential smaller will be tendency______________?
to form positive ions
504 - Lead accumulators are_______________?
both A & C
505 - Capacity of one lead accumulator cell is___________________?
2 volts
506 - The strength of solution of an element whose electrode potential is to be measured is________________?
1M
507 - Voltaic cell is a_________________?
all of the above
508 - Percentage of sulfuric acid in lead accumulator is__________________?
0.3
509 - The half cells are interconnected through________________?
salt bridge
510 - Which of the following element act as inert electrode________________?
Pt
511 - Stronger the oxidizing agent greater is the________________?
Reduction potential
512 - Which of the following cell is not rechargeable ?
Silver oxide cell
513 - Which of the following is true in the case of Zn-Cu cell ?
Zinc acts as an anode and copper as cathode
514 - The degree of dissociation of week electrolyte increases as________________?
Dilution increases
515 - In electrolytic solution conductance of electricity is due to _____________________?
ions
516 - Reaction at anode is called________________?
oxidation
517 - Decrease in oxidation number is called__________________?
reduction
518 - Right half cell contains _____________ electrode?
Cu
519 - Salt bridge transfers_______________?
ions
520 - E0red of an element cab be calculated by comparing it with _____________________?
SHE
521 - Potential of SHE is considered as__________________?
zero
522 - Electrode potential of Zn is__________________?
depends on the nature of the coupled electrode
523 - The element that act as anode always have ______________ position in electrochemical cell?
higher
524 - Greater value of standard reduction potential greater will be tendency__________________?
both B and C
525 - Secondary cell is_____________________?
rechargeable
526 - Density of H2SO4 in lead accumulator is__________________?
1.25g/cm3
527 - In alkaline battery the anode is made up of______________________?
Zn
528 - Apparent charge on atom in molecule is___________________?
oxidation number
529 - In K2Cr2O7 the oxidation number of chromium is____________________?
6
530 - The reduction potential Zn is_________________?
-0.76
531 - Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________?
6
532 - The oxidation number of central metal atom in [Ni(CO)4] is_________________?
4
533 - Group VIB of transition elements contains___________________?
Cr Mo W
534 - The leements in which d or f orbitals are in the process of completion are__________________?
transition elements
535 - The melting points and boiling points upto meddle of 3d- series ____________________?
increases
536 - Pure metal__________________?
does not corrode easily
537 - The correct electronic configuration of Cr is____________________?
[Ar]4s13d5
538 - The oxidation state of transition elements is usually _______________________?
variable
539 - Non-stoichiometric compounds of transition elements are called___________________?
interstitial compounds
540 - The specie which donates electrons to central metal atom in coordination sphere is called____________________?
Ligand is positively charged
541 - Which of the following can form a chealate______________________?
oxalato
542 - The compound or complex ion which has a ring in its structure__________________?
chelate
543 - Geometry of the complex compounds usually depends upon __________________?
hybridization of central metal
544 - In pig iron the concentration of C-atom is ___________________?
2.5 - 4.5%
545 - With impurities like P and S the open hearth furnace is lined with ?
CaO MgO
546 - Which is sold as fertilizer ___________________?
Ca3(PO4)2
547 - When an active metal like Al comes in contact with less active element like Cu then it produces__________________?
galvanic cell
548 - Which of the following is typical transition metal ?
Co
549 - K2 (Cu(CN)4) which one is correct___________________?
Central atom is present in avionic sphere
550 - The location of transition elements is in between__________________?
s and p block elements
551 - Compounds attracted by applied strong magnetic field are called__________________?
paramagnetic
552 - When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?
both A & B
553 - When a compound of transition element is dissolved in a solution of salt then it produces____________________?
complex ions
554 - The species which donate two electron pairs in a coordination compound is called__________________?
bi-dentate ligand
555 - The central atom along with ligands is called____________________?
coordination sphere
556 - In complex compounds the oxidation number is written in___________________?
Roman numeral
557 - When the central atom of coordination compound is sp3d2 hybridization the expected geometry will be___________________?
octahedral
558 - In the production of wrought iron Mg Si and P are removed in the form of___________________?
slag
559 - Any process of chemical decay of metals due to the action of surrounding medium is called__________________?
corrosion
560 - Polymers described as large molecules built up from small repeating units called________________?
Monomers
561 - The important monomers of acryclic resins is__________________?
Methylmethacrylate
562 - Industrial materials and thermal power stations are coated with______________________?
Epoxy paints
563 - Common example of carbohydrates are__________________?
Cellulose glycogen galactose
564 - Hydrolysis of an oligosaccharide in the presence of acid yields________________?
2-9 monosaccharide unit
565 - The process of polymerization was classified by___________________?
W. H. Carothers
566 - Protein attached to some non protein group is called____________________?
Conjugated protein
567 - Lipids are soluble in___________________?
Organic solvents
568 - Animal and vegetable fats are___________________?
Triesters formed from glycerol and fatty acids
569 - Triglycerides are easily hydrolyzed by enzymes called_________________?
Lipases
570 - Saponification is the hydrolysis of fat or oil with an__________________?
Alkali
571 - Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called______________?
Isoenzymes
572 - Enzyme proved useful in cancer treatment is_______________?
L-asparaginase
573 - Nucleic acids were first demonstrated in_________________?
Pus cells
574 - The mechanism by which the genetic information can be duplicated is called_________________?
Replication
575 - The nitrogenous base different in RNA as compared to DNA is_________________?
Thymine
576 - A polymer in which three different monomers combine called_____________?
Terpolymer
577 - Polyester resins are the product of the reaction of__________________?
Dihydric alcohol and dicarboxylic aromatic acids
578 - Carbohydrates are polyhydroxy compounds of___________________?
Aldehydes and ketones
579 - Nylon is obtained by heating___________________?
Adipic acid with hexamethylene diamine
580 - Amylose is__________________?
Soluble in water
581 - All proteins yield ___________ upon complete hydrolysis?
Amino acids
582 - Regular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________?
Secondary structure
583 - Animal fats are located particularly in__________________?
Adipose tissues
584 - Lipopolysaccharides are examples of________________?
Compound lipids
585 - Orgosterol is__________________?
Sterol
586 - Enzynies that catalyze the transfer of groups within molecule are called_________________?
Isomerases
587 - Rate of enzymatic reaction is directly proportional to the concentration of___________________?
Substrate
588 - Purines and pyrimidines are__________________?
Nitrogenous bases
589 - Nucleic acids direct the synthesis of__________________?
Proteins
590 - The fertility of the soil is improved by________________?
All
591 - The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?
straight
592 - Addition of urea to the soil is ____________ reaction?
exothermic
593 - The cooling of molten urea by air in the tower is called______________________?
prilling
594 - DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?
0.75
595 - Calcarious material includes_________________?
all of the above
596 - Which of the following processes is used for the synthesis of cement ?
both
597 - How many zones through which the charge passes in a rotary kiln ?
4
598 - Which one of the following set of raw material is most suitable for manufacture of urea ?
CH4 N2 and CO2
599 - The percentage of nitrogen in urea is________________?
0.46
600 - Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?
diammonium phosphate
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