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CHEMISTRY- PAGE 7

1. Oil of hemlock was drunk by Socrates, when he was condemned to death. Identify the alkaloid responsible for death.
1) Cocaine
2) Morphine
3) Coniine
4) Quinine

Ans: 3

2. Dispersion medium and dispersed phase in butter respectively are ­
1) solid, liquid
2) liquid, solid
3) solid, gas
4) solid, solid

Ans: 1

3. Which of the following is not a method to purify a colloid ?
1) Electrodialysis
2) Coagulation
3) Dialysis
4) Ultrafiltration

Ans: 2

4. Eluent strength is a measure of ­
1) solvent absorption energy
2) solvent adsorption energy
3) solvent diffusivity
4) solvent mixing index

Ans: 2

5. Wilkinson catalyst is used for ­
1) Polymerization
2) Homogeneous Hydrogenation
3) Hydrolysis
4) Halogenation

Ans: 2

6. An example of sandwich compound is ­
1) Ferrocene
2) Phase transfer catalyst
3) Crown ether
4) Clathrate compound

Ans: 1

7. The acid which does not contain carboxylic group is ­
1) Pyruvic acid
2) Alanine
3) Cinnamic acid
4) Picric acid

Ans: 4

8. The incorrect statement with regard to differential thermal analysis DTA is ­
1) The temperature of the sample is compared with that of inert reference material.
2) The temperature remains same until thermal event occurs.
3) In case of an external event being exothermic, the temperature of the reference exceeds than that of sample .
4) 
 The plot of T vs T gives thermogram
Ans: 3

9. 
Which of the following statement for DTA is incorrect ?
1) It is not used as a fingerprint for identification.
2) It is used in mineral research.
3) It is used in food industry.
4) It is used in pharmaceutical industry

Ans: 1

10. In atomic absorption spectroscopy, radiation is absorbed by _______ atoms in vapour state.
1) Excited
2) Unexcited
3) Both Excited and Unexcited
4) None of these

Ans: 2

11. The most widely used source of radiation in atomic absorption spectroscopy is ­
1) Hydrogen gas lamp
2) Hollow cathode lamp
3) Deuterium lamp
4) Tungsten lamp

Ans: 2

12. Untrue statement about atomic absorption spectroscopy is ­
1) It can determine elements in solution.
2) It can determine elements in solids.
3) The use of this technique is based on Beer's law.
4) It can determine all the elements.

Ans: 4

13. Cope rearrangement of Hexa ­ 1,5 ­ diene is a ­
1) [ 1,3 ] sigmatropic rearrangement
2) [ 1,6 ] sigmatropic rearrangement
3) [ 3,3 ] sigmatropic rearrangement
4) [ 6,6 ] sigmatropic rearrangement

Ans: 3

14. 5-­ Methyl-­ 2- ­ hexanone can be synthesised by acetoacetic ester using ­
1) Butyl bromide
2) Isobutyl bromide
3) Methyl bromide
4) Ethyl bromide

Ans: 2

15. Common adsorbent(s) or stationary phase(s) that can be used in adsorption column chromatography is/are ­
1) Alumina
2) Silica Gel
3) Cellulose powder
4) All of Alumina, Silica Gel, and Cellulose powder

Ans: 4

16. Pick up an imino acid ­
1) Proline
2) Cysteine
3) Serine
4) Tyrosine

Ans: 1

17. Alkynes add on hydrogen in the presence of Lindlar's catalyst to give ­
1) cis- ­ alkene
2) trans -­ alkene
3) alkanes
4) cycloalkanes

Ans: 1

18. Reaction of ferrocene with an equimolar amount of acetyl chloride gives a product in which cyclopentadienyl ring undergoes ­
1) Diel's Alder reaction
2) Catalytic hydrogenation
3) Friedel Crafts acylation
4) Hydroformylation
Ans: 3


19. Which one is a non­radiative transition ?
1) Fluorescence
2) Phosphorescence
3) Internal ­ Conversion
4) Chemiluminescence

Ans: 3

20. How many nodes are present in LUMO of 1,3,5­-hexatriene ?
1) 3
2) 1
3) 2
4) 4

Ans: 1

21. The reagent used in polymerisation of isoprene into natural synthetic rubber is ­
1) Lead tetraacetate
2) Wilkinson's catalyst
3) Ziegler Natta catalyst
4) Baker's yeast

Ans: 3

22. Which metal is present in chlorophyll?
1) Fe
2) Mg
3) Ca
4) Ba

Ans: 2

23. Which of the following is used as phase transfer Catalyst. ­
1) Urea
2) Crown ether
3) Ethanol
4) Acetoacetic ester

Ans: 2

24. Nitrobenzene when reduced with Zn + NaOH gives ­
1) Aniline
2) Hydrazobenzene
3) Azoxybenzene
4) Nitrosobenzene

Ans: 2

25. The role of alum in purification of muddy water is that of ­
1) Adsorbent
2) Sublimate
3) Absorbent
4) Coagulant

Ans: 4
26. The monomer of natural rubber is
 A:-Isoprene
 B:-1,3-butadiene
 C:-Chloroprene
 D:-Ethylene
 Correct Answer:- Option-A

27. Due to Frenkel-defect the density of the ionic solids
 A:-Decreases
 B:-Increases
 C:-Does not change
 D:-Changes abnormally
 Correct Answer:- Option-C

28. Anhydrous `"ZnCl_2"` dissolved in con: `"HCl"` is known as
 A:-Baeyer's reagent
 B:-Grignard reagent
 C:-Victor Meyer's reagent
 D:-Lucas reagent
 Correct Answer:- Option-D

29. Alkyl halides react with metallic sodium in ether. The reaction is known as
 A:-Sand Meyer's reaction
 B:-Wurtz reaction
 C:-Wurtz-Fittig reaction
 D:-Fittig's reaction
 Correct Answer:- Option-B

30. The Nobel Prize in Chemistry 2009 was awarded to Venkatraman Ramakrishnan, Thomas A. Steitz and Ada E. Yonath for
 A:-Determining the detailed structure and mechanism of the ribosome
 B:-For cell signaling
 C:-For cell wall composition
 D:-Protein structure
 Correct Answer:- Option-A
31:-A naturally occurring dye
 A:-Indigo
 B:-Malachite green
 C:-Aniline yellow
 D:-Methyl orange
Ans: A

32:-An antimalarial drug is
 A:-Chloramphenicol
 B:-Pamaquin
 C:-Equanil
 D:-Veronal
Ans: B

33:-Heat capacity of species is independent of temperature if it is
 A:-Tetratomic
 B:-Triatomic
 C:-Diatomic
 D:-Monatomic
Ans: D

34:-Gold number gives
 A:-The number of gold atoms present in 1g of gold
 B:-The number of gold atoms required to coagulate 1g of the colloidal solution
 C:-The number of gold atoms present in 1g of gold alloy
 D:-None of these
Ans: D

35:-Which of the following is incorrect ?
 A:-Chemisorption is caused by bond formation
 B:-Chemisorption doesnot extend beyond a monolayer
 C:-Chemisorption is reversible
 D:-Chemisorption increases with increase in temperature
Ans: C

36:-Reversible adiabatic expansion of an ideal gas is an example of
 A:-Isoenthalpic process
 B:-Isoentropic process
 C:-Isothermal process
 D:-Isobaric process
Ans: B

37:-Which of the following is a spontaneous process associated with negative entropy change ?
 A:-Evaporation of a liquid
 B:-Decomposition of `AgCIO_2`
 C:-Dissolution of HCl gas in water
 D:-Acid-base neutralization reaction
Ans: C

38:-What happens to the equilibrium constant of a reaction if the stochiometric coefficient in the balanced chemical equation is doubled ?
 A:-Twiced
 B:-Squared
 C:-Halved
 D:-No change
Ans: B

39:-The maximum number of phases possessed by an invariant system consisting of three components is
 A:-3
 B:-2
 C:-5
 D:-4
Ans: C

40:-The solution of the radial wave function of a hydrogen atom can be obtained from
 A:-Legendre polynomial
 B:-Associated laguerre polynomial
 C:-Hermite polynomial
 D:-Associated legendre polynomial
Ans: B

41:-The number of `^13C_` signals in naphthalene is
 A:-5
 B:-2
 C:-7
 D:-3
Ans: D

42:-Which one of the following shows the highest basicity ?
 A:-`La(OH)_3`
 B:-`Nd(OH)_3`
 C:-`Eu(OH)_3`
 D:-`Lu(OH)_3`
Ans: A

43:-In the vibrational spectrum of `CO_2` , the number of fundamental vibrational modes common in both infrared and Raman are
 A:-3
 B:-2
 C:-1
 D:-0
Ans: D

44:-The electronegativity difference is highest for the pair
 A:-Li, Cl
 B:-K, F
 C:-Na, Cl
 D:-Li, F
Ans: B

45:-The correct set of biologically essential element is
 A:-Fe, Mo, Cu, Zn
 B:-Fe, Cu, Co, Ru
 C:-Cu, Mn, Zn, Ag
 D:-Fe, Ru, Zn, Mg
Ans: A

46:- Which one of the following does not contain hydrophobic structure?
(A) Rubber (B) Linolin (C) Glycogen (D) Linseed oil
Ans: A
 
47. Sedimentation potential is the reverse at _____.
(A) Dorn potential (B) Electrophoresis (C) Electro-osmosis (D) Electrokinetic potential
Ans: B

48:-Which is an abelian group ?
 A:-Cyclic group
 B:-Acyclic group
 C:-Square planar group
 D:-Octahedral group
Ans: A

49:- Colloidal gold is given by injection to act as _____.
(A) Anticancer agent (B) Germ Killer (C) Disinfectant (D) Tonic to raise vitality of human systems
Ans: D

50:-Sum of squares of the dimensions of the irreducible representation of a group will be equal to
 A:-Order of the group
 B:-Character of the group
 C:-Square of the group
 D:-None of these
Ans: A
51:-A metal crystallizers with a face-cubic lattice. The edge of the unit cell is 408 PM. The diameter of metal will be ________.
(A) 408 PM (B) 144 PM
(C) 288 PM (D) 204 PM
Ans: C

52:-Which of the following is known as "King of Poison" ?
 A:-Potassium
 B:-Arsenic
 C:-Calcium
 D:-Flourine
Ans: B
​
53:-The number of groups in the modern periodic table is
 A:-16
 B:-18
 C:-20
 D:-21
Ans: B

5
4. Which among the following solids is a nonpolar solid ?
(A) Hydrogen chloride 
(B) Sulphur dioxide
(C) Water 
(D) Carbon dioxide

Ans: D
 
55. Identify the metal that forms colourless compounds.
(A) Iron (Z = 26) 
(B) Chromium (Z = 24)
(C) Vanadium (Z = 23) 
(D) Scandium (Z = 21)

Ans: D
 
56. What is the highest oxidation state exhibited by group 17 elements ?
(A) + 1 
(B) + 3 
(C) + 5 
(D) + 7

Ans: D
 
57. What is the combining ratio of glycerol and fatty acids when they combine to form triglyceride ?
(A) 3 : 4 
(B) 3 : 2 
(C) 1 : 3 
(D) 1 : 2

Ans: C

58.  Brown ring test is used for detection of which radical ?
(A) Ferrous 
(B) Nitrite 
(C) Nitrate 
​(D) Ferric

Ans: C

59. Identify the compound amongst the following of which 0.1 M aqueous solution has highest boiling point.
(A) Glucose 
(B) Sodium chloride
(C) Calcium chloride 
(D) Ferric chloride

  Ans: D
 
60. What is the reagent used in Etard reaction ?
(A) Chromyl chloride 
(B) Ethanoyl chloride
(C) SnCl2 and HCl 
(D) Cadmium chloride

  Ans: A
 
61. The most abundant noble gas in atmosphere is
(A) Neon  (B) Argon  (C) Xenon  (D) Krypton

  Ans: B
 
62.  Identify an extensive property amongst the following
(A) Viscosity  (B) Heat capacity  (C) Density  (D) Surface tension

  Ans: B
 
63. Which of the following carboxylic acids is a tricarboxylic acid ?
(A) Oxalic acid  (B) Citric acid  (C) Succinic acid  (D) Adipic acid
A
ns: B
 
64. Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of
(A) trifluoroperoxyacetic acid 
(B) acidified potassium permanganate
(C) concentrated nitric acid 
(D) potassium dichromate and dilute sulphuric acid

 Ans: A

65
. The gas used to extinguish fire is
(a) Neon (b) Nitrogen (c) Carbon dioxide (d) Carbon Monoxide

Ans: C

66. The most important ore of aluminium is
(a) Alumina (b) Bauxite (c) Calcite (d) Galena

Ans: B

67. Which one of the following acids is used in lead storage battery?
(a) Hydrochloric acid (b) Hydroflouric acid (c) Sulphuric acid (d) Nitric acid

Ans: C

68. The angular momentum of an electron in an orbit is quantized because it is a necessary condition according to :
(A) Wave nature of electron (B) Particle nature of electron
(C) Pauli‘s exclusion principle (D) None of the above
Ans: A
 
69. The state of an electron in an atom with principal quantum number n = 3 and orbital quantum number 1 = 2 is
(A) 3s (B) 4d (C) 3P (D) 3d

Ans: D
  
70. Atomic packing factor of the body centered cubic structure is :
(A) 74% (B) 52% (C) 68% (D) 34%
Ans: C

71. The radioisotope of hydrogen is
(A) Hydrogen (B) Protium (C) Deuterium (D) Tritium

Ans: D

72. The energy production in the Sun and Stars is due to
(A) Nuclear fusion (B) Nuclear fission (C) Thermolysis (D) Photolysis

Ans: A
 
73. An element which does not exhibit allotropy
(A) Oxygen (B) Fluorine (C) Sulphur (D) Phosphorus

Ans: B
 
74. Organomagnesium compounds are known as
(A) Grignard reagent (B) Wilkinson catalyst (C) Friedel Crafts catalyst (D) Grebbs catalyst

Ans: A
 
75. Minamata disease is caused by poisoning.
(A) Cd (B) Co (C) Hg (D) Pb

Ans: C
 
76. The carbohydrate which cannot be hydrolysed in human digestive system
(A) Starch (B) Sucrose (C) Lactose (D) Cellulose

Ans: D
 
77. The main source of aromatic hydrocarbons is
(A) Benzene (B) Coal tar (C) Natural gas (D) Petroleum gas

Ans: B
 
78. Bakelite is formed by the condensation of phenol with
(A) Melamine (B) Glycol (C) Styrene (D) Formaldehyde

Ans: D

79. Temporary hardness of water is due to the presence of of Ca and Mg.
(A) Sulphates (B) Chlorides (C) Nitrates (D) Bicarbonates

Ans: D
 
80. The colour of phenolphthalein in the pH range 8.0 — 9.8 is
(A) Pink (B) Orange red (C) Yellow (D) Colourless

Ans: A

81. The temperature above which a gas cannot be liquified by applying pressure, is called
(A) Boyle temperature (B) Inversion temperature (C) Critical temperature (D) Limiting temperature

Ans: C

82. Electrolysis off used salt is used to extract
(A) Silver (B) Lead (C) Sodium (D) Iron

Ans: C
 
73. Emission of light as a result of chemical reaction is
(A) Fluorescence (B) Chemiluminescence (C) Phosphorescence (D) Photosensitization

Ans: B
 
74. _______ is used to provide inert atmosphere.
(A) He (B) Ne (C) Ar (D) None

Ans: C
 
75. Isotonic solution have the same
(A) Osmotic pressure (B) Vapour pressure (C) Atmospheric pressure (D) Internal pressure

Ans: A
 
76. In Wurtz reaction, the metal used is
(A) Mg (B) Sn (C) Zn (D) Na

Ans: D
 
77. Peroxide effect is also known as
(A) Steric effect (B) Kharasch effect (C) Electromeric effect (D) Markownikoff’s rule

Ans: B
 
78. _________is an example of natural fuel.
(A) CNG (B) Coal gas (C) Water gas (D) Producer gas

Ans: A

79. Micelle systems are used in _____.
​(A) Magnetic separation process (B) Petroleum recovery (C) Gums (D) All of above.
Ans: B

80. Peptization involves ______.
(A) Impact of molecules of the dispersion medium on the colloidal particles. (B) Disintegration of  colloidal aggregates (C) Precipitation of colloidal particles (D) Evaporation of dispersion medium.
Ans: B
 
81. Blood may be purified by _____.
(A) Electro-osmosis (B) Filtration (C) Dialysis (D) Coagulation
Ans: C
 
82. Application of de novo fermentation to produce chemicals directly from biomass is called ______.
(A) Refining (B) White biotechnology (C) Green biotechnology (D) Red biotechnology.
Ans: B
 
83. Drugs that bind to the receptor site and inhibit its natural function are called _____.
(A) Antagonists (B) Agonists (C) Inactivators (D) Pheromones
Ans: A
 
84. Depletion of Ozone layer causes ____.
(A) Bronchitis (B) Lung cancer (C) Skin cancer (D) Blood cancer
Ans: C
 
85. The structure of MgO is similar to NaCl.  What would be the coordination number of magnesium?
(A) 4 (B) 8 (C) 2 (D)  6
Ans: D
 
86. The flame colours of metal ions are due to _____.
(A) Frenkel defect (B) Schottky defect (C) Metal excess defect (D) Metal deficiency defect
Ans: C

87. Dry cell is ________.
(A) Primary cell (B) Secondary cell (C) Tertiary cell (D) Reversible cell
Ans: A
 
88. Among the following aqueous solutions, which one will have the highest electrical conductivity?
(A) 0.1 M Acetic acid (B) 0.1 M Chloroacetic acid (C) 0.1 M Difluoro acetic acid (D) 0.1 M Fluoro acetic acid
Ans: C
 
89. In a reaction, the threshold energy is equal to ________.
(A) Activation energy + Normal energy of reactants (B) Activation energy – Normal energy of reactants (C) Normal energy of reactants (D) Activation energy
Ans: A
 
90. According to law of mass action, the rate of chemical reaction is proportional to ________.
(A) Concentration of reactants (B) Molar Concentration of reactants (C) Concentration of products (D) Molar Concentration of products
Ans: B

91. 1 ml of 0.1 N HCl is added to 1 litre solution of NaCl. The PH of the resultant solution will be _______.
(A) 1 (B) 2 (C) 7 (D) 4
Ans: D

92. An indicator with pKb = 4.00 changes colour at PH of ________.
(A) 8 (B) 12 (C) 10 (D) 4
Ans: C

93. Which one of the following is incorrect for Joule’s law?
(A) No change of temperature (B) No work is done in the process
(C) Change in temperature (D) Follow the first law of thermodynamics.
Ans: C
 
94. Which one of the following is not an oxygen transportation agent?
(A) Transferrin (B) Haemoglobin (C) Myoglobin (D) Hemocyanin
Ans: A
 
95. Which one of the following is not used in optical or high speed electronic device?
(A) ZnS (B) ZnCl (C) GaAs (D) CdS
Ans: B 
 
96. A method of removing excess solute from a colloidal solution is _____.
(A) Distillation (B) Crystallization (C) Dialysis (D) Gas Chromatography
Ans: C
 
97. Physical absorption increases when _____.
(A) Temperature increases (B) Temperature decreases
(C) Temperature remains constant (D) Temperature increases above 60 deg C.
Ans: B
 
98. Correct statement for Boron trifluoride is _______.
(A) Boron trihalide behaves as a Lewis base (B) Boron trihalide behaves as Bronsted base
(C) Boron trihalide behaves as Lewis acid (D) BH3 behaves as hard b acid
Ans: C
 
99. Diamond is measured in carats. Value of 1 carat will be ________.
(A) 100 mg (B) 200 mg (C) 10 mg (D) 20 mg
Ans: B

100. Which one of the following substances is useful as Pizoelectric material?
(A) Cristobalite (B) Tridymite (C) Quartz (D) Dry ice
Ans: C
​
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