CHEMISTRY- PAGE 6
1. Bhopal's Union Carbide Plant was a manufacturing unit for the following insecticide :
1) Methiocarb
2) Aldrin
3) Carbaryl
4) Dementon
Ans: 3
2. Stratosphere lies between :
1) troposphere and mesosphere
2) thermosphere and mesosphere
3) thermosphere and exosphere
4) exosphere and mesosphere
Ans: 1
3. Actinides which exhibit +7 oxidation state are
1) U, Np
2) Np, Pu
3) Pu, Am
4) Am, Cm
Ans: 2
4. Member of Lanthanide series which exhibits +4 oxidation state is
1) Ce
2) Pm
3) Eu
4) Er
Ans: 1
5. Carborane is formed by the reaction of decaborane14 with.........
1) methane
2) ethane
3) ethene
4) ethyne
Ans: 4
6. Borazine is..........reactive than Benzene
1) less
2) more
3) equal
4) very less
Ans: 2
7. Total number of (3c-2e) banana bonds in diborane is
1) Zero
2) One
3) Two
4) Three
Ans: 3
8. Silicones are
1) polymer compounds of silicon and carbon
2) polymer compounds of silicon and hydrogen
3) polymer compounds of silicon, carbon and oxygen
4) polymer compounds of silicon, carbon and hydrogen
Ans: 3
9. Which of the following crystals does not exhibit Frankel defect ?
1) AgBr
2) AgCl
3) KBr
4) ZnS
Ans: 3
10. To make Ge a p- type of semiconductor, it is doped with
1) trivalent impurities
2) tetravalent impurities
3) pentavalent impurities
4) divalent impurities
Ans: 1
11. Which of the following crystal defects decreases density of the substance ?
1) Interstitial defect
2) Frankel defect
3) Schottky defect
4) F centre
Ans: 3
12. The total number of Bravais lattices in a crystal is
1) 7
2) 32
3) 230
4) 14
Ans: 4
13. Total number of atoms in an unit cell of a face centred cubic unit ( fcc ) is
1) 2
2) 3
3) 4
4) 6
Ans: 3
14. The reagent which can be used to distinguish between starch and cellulose is
1) Tollen's reagent
2) Iodine solution
3) Acetic anhydride
4) Fehling's solution
Ans: 2
15. Glucose on oxidation with concentrated nitric acid forms
1) Gluconic acid
2) Oxalic acid
3) Malonic acid
4) Saccharic acid
Ans: 4
16. Invert sugar is
1) Sucrose
2) Mixture of Glucose + Fructose
3) Maltose
4) Lactose
Ans: 2
17. Which one of the following is a globular protein
1) Collagen
2) Myosin
3) Insulin
4) Fibroin
Ans: 3
18. Piperine on hydrolysis by alkali gives
1) Piperic acid
2) Piperidinc
3) Piperic acid + Piperidine
4) Piperonal
Ans: 3
19. Nicotine on oxidation with chromic acid or potassium permanganate gives
1) Nicotinic acid
2) Nicotone
3) Nicotine sulphate
4) Nicotinamide
Ans: 1
20. Cholesterol on oxidation forms
1) Cholestanol
2) Cholestenone
3) Cholesterase
4) Cholestene
Ans: 2
21. When acetoacetic ester reacts with phenyl hydrazine, it forms
1) 3 Methyl 1 phenylpyrozolone
2) 4 methyluracil
3) Ethyl acetate
4) 1,3 butanediol
Ans: 1
22. The reaction intermediate formed in Claisen condensation is
1) Carbonium ion
2) Carbene
3) Carbanion
4) Free radical
Ans: 3
23. o-Bromofluorobenzene reacts with lithium amalgam in presence of furan to form 1,4- epoxy- 1,4 -dihydronaphthalene. Identify the reaction intermediate in above reaction.
1) Carbonium ion
2) Carbanion
3) Benzyne
4) Carbene
Ans: 3
24. Cement, Ceramics and Glass industries are based on chemistry of ........
1) Silicates
2) Diborane
3) Silicones
4) Borazine
Ans: 1
25. The efficiency of coagulation depends upon valeny of cation as follows
1) Independent of valency
2) It decreases with increase of valency
3) It increases with increase of valency
4) Randomly changes
Ans: 3
1) Methiocarb
2) Aldrin
3) Carbaryl
4) Dementon
Ans: 3
2. Stratosphere lies between :
1) troposphere and mesosphere
2) thermosphere and mesosphere
3) thermosphere and exosphere
4) exosphere and mesosphere
Ans: 1
3. Actinides which exhibit +7 oxidation state are
1) U, Np
2) Np, Pu
3) Pu, Am
4) Am, Cm
Ans: 2
4. Member of Lanthanide series which exhibits +4 oxidation state is
1) Ce
2) Pm
3) Eu
4) Er
Ans: 1
5. Carborane is formed by the reaction of decaborane14 with.........
1) methane
2) ethane
3) ethene
4) ethyne
Ans: 4
6. Borazine is..........reactive than Benzene
1) less
2) more
3) equal
4) very less
Ans: 2
7. Total number of (3c-2e) banana bonds in diborane is
1) Zero
2) One
3) Two
4) Three
Ans: 3
8. Silicones are
1) polymer compounds of silicon and carbon
2) polymer compounds of silicon and hydrogen
3) polymer compounds of silicon, carbon and oxygen
4) polymer compounds of silicon, carbon and hydrogen
Ans: 3
9. Which of the following crystals does not exhibit Frankel defect ?
1) AgBr
2) AgCl
3) KBr
4) ZnS
Ans: 3
10. To make Ge a p- type of semiconductor, it is doped with
1) trivalent impurities
2) tetravalent impurities
3) pentavalent impurities
4) divalent impurities
Ans: 1
11. Which of the following crystal defects decreases density of the substance ?
1) Interstitial defect
2) Frankel defect
3) Schottky defect
4) F centre
Ans: 3
12. The total number of Bravais lattices in a crystal is
1) 7
2) 32
3) 230
4) 14
Ans: 4
13. Total number of atoms in an unit cell of a face centred cubic unit ( fcc ) is
1) 2
2) 3
3) 4
4) 6
Ans: 3
14. The reagent which can be used to distinguish between starch and cellulose is
1) Tollen's reagent
2) Iodine solution
3) Acetic anhydride
4) Fehling's solution
Ans: 2
15. Glucose on oxidation with concentrated nitric acid forms
1) Gluconic acid
2) Oxalic acid
3) Malonic acid
4) Saccharic acid
Ans: 4
16. Invert sugar is
1) Sucrose
2) Mixture of Glucose + Fructose
3) Maltose
4) Lactose
Ans: 2
17. Which one of the following is a globular protein
1) Collagen
2) Myosin
3) Insulin
4) Fibroin
Ans: 3
18. Piperine on hydrolysis by alkali gives
1) Piperic acid
2) Piperidinc
3) Piperic acid + Piperidine
4) Piperonal
Ans: 3
19. Nicotine on oxidation with chromic acid or potassium permanganate gives
1) Nicotinic acid
2) Nicotone
3) Nicotine sulphate
4) Nicotinamide
Ans: 1
20. Cholesterol on oxidation forms
1) Cholestanol
2) Cholestenone
3) Cholesterase
4) Cholestene
Ans: 2
21. When acetoacetic ester reacts with phenyl hydrazine, it forms
1) 3 Methyl 1 phenylpyrozolone
2) 4 methyluracil
3) Ethyl acetate
4) 1,3 butanediol
Ans: 1
22. The reaction intermediate formed in Claisen condensation is
1) Carbonium ion
2) Carbene
3) Carbanion
4) Free radical
Ans: 3
23. o-Bromofluorobenzene reacts with lithium amalgam in presence of furan to form 1,4- epoxy- 1,4 -dihydronaphthalene. Identify the reaction intermediate in above reaction.
1) Carbonium ion
2) Carbanion
3) Benzyne
4) Carbene
Ans: 3
24. Cement, Ceramics and Glass industries are based on chemistry of ........
1) Silicates
2) Diborane
3) Silicones
4) Borazine
Ans: 1
25. The efficiency of coagulation depends upon valeny of cation as follows
1) Independent of valency
2) It decreases with increase of valency
3) It increases with increase of valency
4) Randomly changes
Ans: 3
26. Addition of magnesium to cast Iron increases it's
A:-Hardness
B:-Creep strength
C:-Corrosion resistance
D:-Ductility and strength in tension
Ans: D
A:-Hardness
B:-Creep strength
C:-Corrosion resistance
D:-Ductility and strength in tension
Ans: D
27. The cell used in Appollo Space Programme :
(A) Dry Cell (B) Mercury Cell
(C) Nickel-Cadmium Cell (D) Fuel Cell
Ans: D
28. The element which have positive Electron gain Enthalpy :
(A) H (B) Cl (C) Ne (D) Na
Ans: C
29. Bond order of oxygen molecule :
(A) 2 (B) 3 (C) 1 (D) 0
Ans: A
30. Which of the following orbital is not possible ?
(A) 2s (B) 3p (C) 2d (D) 4d
Ans: C
31. Zig-Zag movement of colloidal particle is called :
(A) Tyndall Effect (B) Brownian movement
(C) Electrophoresis (D) Peptization
Ans: B
32. The Geometry of CH4 molecule :
(A) Square Planar (B) Octahedral
(C) Tetrahedral (D) Trigonal Bipyramid
Ans: C
33. The condition for a thermodynamic process to be adiabatic :
(A) q=0 (B) ∆T=0 (C) ∆V=0 (D) W=0
Ans: A
34. pH of pure water :
(A) 0 (B) 7 (C) 12 (D) 5
Ans: B
35. The molecular formulae of an organic compound is C2H2. The compound is an :
(A) Alkane (B) Alkyne (C) Alkene (D) Aldehyde
Ans: B
36. The reaction used for the preparation of chlorobenzene from diazonium chloride is :
(A) Sandmayer’s Reaction (B) Aldol Condensation
(C) Cannizzaro Reaction (D) Wurtz Reaction
Ans: A
37. The IUPAC name of Acetaldehyde is :
(A) Methanal (B) Propanal (C) Ethanol (D) Ethanal
Ans: D
38. Acid used for the coagulation of rubber latex commercially :
(A) Formic Acid (B) Acetic Acid (C) Citric Acid (D) Lactic Acid
Ans: A
39. Chemical substance used for relieving pain :
(A) Antiseptic (B) Tranquillizer (C) Antibiotic (D) Analgesics
Ans: D
40. The gas having lowest density
(A) Hydrogen (B) Chlorine
(C) Oxygen (D) Nitrogen
Ans: A
(A) Dry Cell (B) Mercury Cell
(C) Nickel-Cadmium Cell (D) Fuel Cell
Ans: D
28. The element which have positive Electron gain Enthalpy :
(A) H (B) Cl (C) Ne (D) Na
Ans: C
29. Bond order of oxygen molecule :
(A) 2 (B) 3 (C) 1 (D) 0
Ans: A
30. Which of the following orbital is not possible ?
(A) 2s (B) 3p (C) 2d (D) 4d
Ans: C
31. Zig-Zag movement of colloidal particle is called :
(A) Tyndall Effect (B) Brownian movement
(C) Electrophoresis (D) Peptization
Ans: B
32. The Geometry of CH4 molecule :
(A) Square Planar (B) Octahedral
(C) Tetrahedral (D) Trigonal Bipyramid
Ans: C
33. The condition for a thermodynamic process to be adiabatic :
(A) q=0 (B) ∆T=0 (C) ∆V=0 (D) W=0
Ans: A
34. pH of pure water :
(A) 0 (B) 7 (C) 12 (D) 5
Ans: B
35. The molecular formulae of an organic compound is C2H2. The compound is an :
(A) Alkane (B) Alkyne (C) Alkene (D) Aldehyde
Ans: B
36. The reaction used for the preparation of chlorobenzene from diazonium chloride is :
(A) Sandmayer’s Reaction (B) Aldol Condensation
(C) Cannizzaro Reaction (D) Wurtz Reaction
Ans: A
37. The IUPAC name of Acetaldehyde is :
(A) Methanal (B) Propanal (C) Ethanol (D) Ethanal
Ans: D
38. Acid used for the coagulation of rubber latex commercially :
(A) Formic Acid (B) Acetic Acid (C) Citric Acid (D) Lactic Acid
Ans: A
39. Chemical substance used for relieving pain :
(A) Antiseptic (B) Tranquillizer (C) Antibiotic (D) Analgesics
Ans: D
40. The gas having lowest density
(A) Hydrogen (B) Chlorine
(C) Oxygen (D) Nitrogen
Ans: A
41:-Drinking soda is
A:-Alkaline
B:-Acidic
C:-Neutral
D:-Oxidant
Ans: B
42. Which of the following statements about the composition of the vapour over an ideal 1 :1 molar mixture of benzene and toluene is correct ? Assume that the temperature is constant at 25°C. (Given, Vapour Pressure Data at 25"C,benzene=12.8kPa, toluene =3.85kPa)
(1) The vapour will contain equal amounts of benzene and toluene.
(2) Not enough information is given to make a prediction.
(3) The vapour will contain a higher percentage of benzene.
(4) The vapour will contain a higher percentage of toluene
Ans: 3
43. The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is :
(1) The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain.
(2) The staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain.
(3) The staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain.
(4) The eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.
Ans: 2
44. Fog is a colloidal solution of :
(1) Solid in gas
(2) Gas in gas
(3) Liquid in gas
(4) Gas in liquid
Ans: 3
45. Which is the correct statement for the given acids ?
(1) Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.
(2) Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.
(3) Both are diprotic acids.
(4) Both are triprotic acid
Ans: 1
46. The correct statement regarding RNA and DNA, respectively is :
(1) The sugar component in RNA is arabinose and the sugar component in DNA is ribose.
(2) The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose.
(3) The sugar component in RNA is arabinose and the sugar component in DNA is 2'-deoxyribose.
(4) The sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose.
Ans: 4
47. Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer ?
(1) MnO2
(2) Aluminium isopropoxide
(3) Acetone
(4) Ozone
Ans: 3
48. The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha- carbon, is : w
(1) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as carbonylation.
(2) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as keto-en01 tautomerism.
(3) a carbonyl compound with a hydrogen atoG on its alpha-carbon never equilibrates with its corresponding enol.
(4) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as aldehyde-ketone equilibration.
Ans: 2
49. At 100°C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kb=0.52, the boiling point of this solution will be :
(1) 102°C
(2) 103°C
(3) 101°C
(4) 100 °C
Ans: 3
50. Consider the nitration of benzene using mixed conc. H2S04 and HN03. If a large amount of KHS04 is added to the mixture, the rate of nitration will be :
(1) unchanged
(2) doubled
(3) faster
(4) slower
Ans: 4
A:-Alkaline
B:-Acidic
C:-Neutral
D:-Oxidant
Ans: B
42. Which of the following statements about the composition of the vapour over an ideal 1 :1 molar mixture of benzene and toluene is correct ? Assume that the temperature is constant at 25°C. (Given, Vapour Pressure Data at 25"C,benzene=12.8kPa, toluene =3.85kPa)
(1) The vapour will contain equal amounts of benzene and toluene.
(2) Not enough information is given to make a prediction.
(3) The vapour will contain a higher percentage of benzene.
(4) The vapour will contain a higher percentage of toluene
Ans: 3
43. The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is :
(1) The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain.
(2) The staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain.
(3) The staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain.
(4) The eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.
Ans: 2
44. Fog is a colloidal solution of :
(1) Solid in gas
(2) Gas in gas
(3) Liquid in gas
(4) Gas in liquid
Ans: 3
45. Which is the correct statement for the given acids ?
(1) Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.
(2) Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.
(3) Both are diprotic acids.
(4) Both are triprotic acid
Ans: 1
46. The correct statement regarding RNA and DNA, respectively is :
(1) The sugar component in RNA is arabinose and the sugar component in DNA is ribose.
(2) The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose.
(3) The sugar component in RNA is arabinose and the sugar component in DNA is 2'-deoxyribose.
(4) The sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose.
Ans: 4
47. Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer ?
(1) MnO2
(2) Aluminium isopropoxide
(3) Acetone
(4) Ozone
Ans: 3
48. The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha- carbon, is : w
(1) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as carbonylation.
(2) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as keto-en01 tautomerism.
(3) a carbonyl compound with a hydrogen atoG on its alpha-carbon never equilibrates with its corresponding enol.
(4) a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding en01 and this process is known as aldehyde-ketone equilibration.
Ans: 2
49. At 100°C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kb=0.52, the boiling point of this solution will be :
(1) 102°C
(2) 103°C
(3) 101°C
(4) 100 °C
Ans: 3
50. Consider the nitration of benzene using mixed conc. H2S04 and HN03. If a large amount of KHS04 is added to the mixture, the rate of nitration will be :
(1) unchanged
(2) doubled
(3) faster
(4) slower
Ans: 4
51. The correct statement regarding the basicity of arylamines is
(1) Arylamines are generally more basic than alkylamines because of aryl group.
(2) Arylainines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized.
(3) Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring π electron system.
(4) Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring π electron system.
Ans: 3
52. In a protein molecule various amino acids are linked together by :
(1) peptide bond
(2) dative bond
(3) α-glycosidic bond
(4) β -glycosidic bond
Ans: 1
53. Consider the molecules CH4, NH3 and H20. Which of the given statements is false ?
(1) The H -0-H bond angle in H20 is smaller than the H -N -H bond angle in NH3.
(2) The H -C-H bond angle in CH4 is larger than the H -N -H bond angle in NH3.
(3) The H -C -H bond angle in CH4, the H-N-H bond angle in NH3, and the H -0-H bond angle in H20 are all greater than 90 degree
(4) The H -0-H bond angle in H20 is larger than the H -C-H bond angle in CH4.
Ans: 4
54. Which of the following statements is false ?
(1) Ca2+ ions are not important in maintaining the regular beating of the heart.
(2) Mg2+ ions are important in the green parts of plants.
(3) Mg2+ ions form a complex with ATP.
(4) Ca2+ ions are important in blood clotting.
Ans: 1
(1) Arylamines are generally more basic than alkylamines because of aryl group.
(2) Arylainines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized.
(3) Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring π electron system.
(4) Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring π electron system.
Ans: 3
52. In a protein molecule various amino acids are linked together by :
(1) peptide bond
(2) dative bond
(3) α-glycosidic bond
(4) β -glycosidic bond
Ans: 1
53. Consider the molecules CH4, NH3 and H20. Which of the given statements is false ?
(1) The H -0-H bond angle in H20 is smaller than the H -N -H bond angle in NH3.
(2) The H -C-H bond angle in CH4 is larger than the H -N -H bond angle in NH3.
(3) The H -C -H bond angle in CH4, the H-N-H bond angle in NH3, and the H -0-H bond angle in H20 are all greater than 90 degree
(4) The H -0-H bond angle in H20 is larger than the H -C-H bond angle in CH4.
Ans: 4
54. Which of the following statements is false ?
(1) Ca2+ ions are not important in maintaining the regular beating of the heart.
(2) Mg2+ ions are important in the green parts of plants.
(3) Mg2+ ions form a complex with ATP.
(4) Ca2+ ions are important in blood clotting.
Ans: 1
55. Which one given below is a non-reducing sugar ?
(1) Glucose (2) Sucrose (3) Maltose (4) Lactose
Ans: 2
56. Which one of the following characteristics is associated with adsorption ?
(1) ∆G and ∆H are negative but ∆S is positive
(2) ∆G and ∆S are negative but ∆H is positive
(3) ∆G is negative but ∆H and ∆S are positive
(4) ∆G, ∆H and ∆S all are negative
Ans: 4
57. Two electrons occupying the same orbital are distinguished by :
(1) Azimuthal quantum number (2) Spin quantum number
(3) Principal quantum number (4) Magnetic quantum number
Ans: 2
58. The product formed by the reaction of an aldehyde with a primary amine is :
(1) Carboxylic acid (2) Aromatic acid
(3) Schiff base (4) Ketone
Ans: 3
59. The addition of a catalyst during a chemical reaction alters which of the following quantities ?
(1) Enthalpy (2) Activation energy (3) Entropy (4) Internal energy
Ans: 2
60. Predict the correct order among the following :
(1) bond pair -bond pair >lone pair -bond pair >lone pair -lone pair
(2) lone pair -bond pair >bond pair -bond pair >lone pair -lone pair
(3) lone pair -lone pair >lone pair -bond pair > bond pair -bond pair
(4) lone pair -lone pair >bond pair -bond pair > lone pair -bond pair
Ans: 3
61. Which of the following statements about hydrogen is incorrect ?
(1) Hydronium ion, H3O+ exists freely in solution.
(2) Dihydrogen does not act as a reducing agent.
(3) Hydrogen has three isotopes of which tritium is the most common.
(4) Hydrogen never acts as cation in ionic salts
Ans: 4
62. In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?
(1) I < Br < Cl < F (increasing electron gain enthalpy)
(2) Li < Na < K < Rb (increasing metallic radius)
(3) Al3+ < Mg2+ < Na+ < F- (increasing ionic size)
(4) B < C < N < O (increasing first ionisation enthalpy)
Ans: 1
63. Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape ?
(1) 3/8
(2) 1/2
(3) 1/8
(4) 1/4
Ans: 3
64. Among the following, the correct order of acidity is:
(1) HClO2< HClO < HClO3< HClO4
(2) HClO4< HClO2< HClO < HClO3
(3) HClO3<HClO4<HClO2< HClO
(4) HClO < HClO2, <HClO3, <HClO4
Ans: 4
65. Which of the following is an analgesic ?
(1) Streptomycin
(2) Chloromycetin
(3) Novalgin
(4) Penicillin
Ans: 3
66. Natural rubber has :
(1) Alternate cis -and trans-configuration
(2) Random cis -and trans-configuration
(3) All cis-configuration
(4) All trans-configuration
Ans: 3
(1) Glucose (2) Sucrose (3) Maltose (4) Lactose
Ans: 2
56. Which one of the following characteristics is associated with adsorption ?
(1) ∆G and ∆H are negative but ∆S is positive
(2) ∆G and ∆S are negative but ∆H is positive
(3) ∆G is negative but ∆H and ∆S are positive
(4) ∆G, ∆H and ∆S all are negative
Ans: 4
57. Two electrons occupying the same orbital are distinguished by :
(1) Azimuthal quantum number (2) Spin quantum number
(3) Principal quantum number (4) Magnetic quantum number
Ans: 2
58. The product formed by the reaction of an aldehyde with a primary amine is :
(1) Carboxylic acid (2) Aromatic acid
(3) Schiff base (4) Ketone
Ans: 3
59. The addition of a catalyst during a chemical reaction alters which of the following quantities ?
(1) Enthalpy (2) Activation energy (3) Entropy (4) Internal energy
Ans: 2
60. Predict the correct order among the following :
(1) bond pair -bond pair >lone pair -bond pair >lone pair -lone pair
(2) lone pair -bond pair >bond pair -bond pair >lone pair -lone pair
(3) lone pair -lone pair >lone pair -bond pair > bond pair -bond pair
(4) lone pair -lone pair >bond pair -bond pair > lone pair -bond pair
Ans: 3
61. Which of the following statements about hydrogen is incorrect ?
(1) Hydronium ion, H3O+ exists freely in solution.
(2) Dihydrogen does not act as a reducing agent.
(3) Hydrogen has three isotopes of which tritium is the most common.
(4) Hydrogen never acts as cation in ionic salts
Ans: 4
62. In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?
(1) I < Br < Cl < F (increasing electron gain enthalpy)
(2) Li < Na < K < Rb (increasing metallic radius)
(3) Al3+ < Mg2+ < Na+ < F- (increasing ionic size)
(4) B < C < N < O (increasing first ionisation enthalpy)
Ans: 1
63. Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape ?
(1) 3/8
(2) 1/2
(3) 1/8
(4) 1/4
Ans: 3
64. Among the following, the correct order of acidity is:
(1) HClO2< HClO < HClO3< HClO4
(2) HClO4< HClO2< HClO < HClO3
(3) HClO3<HClO4<HClO2< HClO
(4) HClO < HClO2, <HClO3, <HClO4
Ans: 4
65. Which of the following is an analgesic ?
(1) Streptomycin
(2) Chloromycetin
(3) Novalgin
(4) Penicillin
Ans: 3
66. Natural rubber has :
(1) Alternate cis -and trans-configuration
(2) Random cis -and trans-configuration
(3) All cis-configuration
(4) All trans-configuration
Ans: 3
67. The gas in a balloon of volume 2 L is released into an empty vessel of volume 7 L. What will be the volume of the gas ?
(A) 2 L (B) 7 L (C) 9 L (D) 5 L
Ans: B
68. Identify the element which shows variable valency.
(A) Helium (B) Magnesium (C) Sodium (D) Iron
Ans: D
69. The speed of chemical reaction between gases increases with increase in pressure due to an increase in
(A) Number of molecules (B) Volume (C) Concentration (D) Distance between molecules
Ans: C
70. The scientific principle behind the working of a transformer is
(A) Mutual induction (B) Transmission (C) Rectification (D) Amplification
Ans: A
71. The outermost shell configuration of an element is 4s24p3. The period to which the element belongs is
(A) 5 (B) 8 (C) 3 (D) 4
Ans: D
72. Nucleus is discovered by
(A) Robert Brown (B) Golgi (C) Bowman (D) Fountain
Ans: A
73. Acid rain is due to
(A) O3 and dust (B) SO2 and NO2 (C) SO3 and CO (D) CO2 and CO
Ans: B
74. Green house effect is mainly due to
(A) CH4 (B) SO2 (C) CFC (D) CO2
Ans: D
(A) 2 L (B) 7 L (C) 9 L (D) 5 L
Ans: B
68. Identify the element which shows variable valency.
(A) Helium (B) Magnesium (C) Sodium (D) Iron
Ans: D
69. The speed of chemical reaction between gases increases with increase in pressure due to an increase in
(A) Number of molecules (B) Volume (C) Concentration (D) Distance between molecules
Ans: C
70. The scientific principle behind the working of a transformer is
(A) Mutual induction (B) Transmission (C) Rectification (D) Amplification
Ans: A
71. The outermost shell configuration of an element is 4s24p3. The period to which the element belongs is
(A) 5 (B) 8 (C) 3 (D) 4
Ans: D
72. Nucleus is discovered by
(A) Robert Brown (B) Golgi (C) Bowman (D) Fountain
Ans: A
73. Acid rain is due to
(A) O3 and dust (B) SO2 and NO2 (C) SO3 and CO (D) CO2 and CO
Ans: B
74. Green house effect is mainly due to
(A) CH4 (B) SO2 (C) CFC (D) CO2
Ans: D
75.Oxidation number of nitrogen in which among the oxides of nitrogen is the lowest ?
A)Nitric oxide
B)Nitrous oxide
C)Nitrogen dioxide
D)Nitrogen trioxide
Ans: B
76.Select the ether among following that yields methanol as one of the products on reaction with cold hydroiodic acid
A)1-Methoxybutane
B)1-Methoxy-2-methylpropane
C)2-Methoxy-2-methylpropane
D)Methoxybenzene
Ans: C
77.Presence of nitrogen in which among the following compounds can NOT be detected byLassaigne method ?
A)Hydrazine
B)Aniline
C)p-Toluidine
D)Picric acid
Ans: A
78.Among the following select the alkane that is expected to have lowest boiling point
A)Hexane
B)2-Methylpentane
C)3-Methylpentane
D)2, 2-Dimethylbutane
Ans: D
79.Which among the following gases can be liquified easily ?
A)Chlorine
B)Nitrogen
C)Oxygen
D)Hydrogen
Ans: A
80.Ozone is present as a chief constituent in which region of the atmosphere ?
A)Troposphere
B)Stratosphere
C)Mesosphere
D)Thermosphere
Ans: B
81.The plot of square root of frequency of X-ray emitted against atomic number led to suggestion of which law/rule ?
A)Periodic law
B)Modern periodic law
C)Hund’s rule
D)Newland’s law
Ans: B
82.The compound that yields only ketonic compound/s on ozonolysis is
A)But-2-ene
B)Pent-2-ene
C)2, 3-Dimethylbut-2-ene
D)2-Methylbut-2-ene
Ans: C
83.Which among the following metals is refined by electrolytic method ?
A)Aluminium
B)Bismuth
C)Tin
D)Lead
Ans: A
84.The two monomers used in the preparation of dextron are
A)3-hydroxy butanoic acid and 3-hydroxy pentanoic acid
B) ∈ amino caproic acid and glycine
C)Isobutylene and isoprene
D)Lactic acid and glycolic acid
Ans: D
85.Which oxyacid of sulphur contains S-S single bond ?
A)Oleum
B)Marshall’s acid
C)Dithionic acid
D)Thiosulphuric acid
Ans: C
86.Amongst the followings, select the element having highest ionization enthalpy
A)Sodium
B)Potassium
C)Beryllium
D)Magnesium
Ans: C
87.Butylated hydroxy toluene is used in
A)preventing oxidative rancidity of fats
B)preserving food grains
C)killing bacteria in living tissues
D)reducing stress and anxiety
Ans: A
88.Deficiency of which vitamin causes degeneration of spinal cord ?
A)E
B)K
C)B12
D)A
Ans: C
89.Bond order of which among the following molecules is zero ?
A)F2
B)O2
C)Be2
D)Li2
Ans: C
90.Benzene can be conveniently converted into n-propyl benzene by
A)Friedel – Craft alkylation with n-propyl chloride
B)Friedel – Craft acylation with propionyl chloride followed by Wolff – Kishner reduction
C)Friedel – Craft acylation with propionyl chloride followed by catalytic hydrogenation
D)Friedel – Craft acylation with propionyl chloride followed by reduction with LiAlH4
Ans: B
91.One mole of stachyose on hydrolysis yields
A)1 mole of glucose + 1 mole of fructose + 2 mole of galactose
B)2 mole of glucose + 1 mole of fructose + 1 mole of galactose
C)1 mole of glucose + 2 mole of fructose + 1 mole of galactose
D)2 mole of glucose + 2 mole of fructose
Ans: A
A)Nitric oxide
B)Nitrous oxide
C)Nitrogen dioxide
D)Nitrogen trioxide
Ans: B
76.Select the ether among following that yields methanol as one of the products on reaction with cold hydroiodic acid
A)1-Methoxybutane
B)1-Methoxy-2-methylpropane
C)2-Methoxy-2-methylpropane
D)Methoxybenzene
Ans: C
77.Presence of nitrogen in which among the following compounds can NOT be detected byLassaigne method ?
A)Hydrazine
B)Aniline
C)p-Toluidine
D)Picric acid
Ans: A
78.Among the following select the alkane that is expected to have lowest boiling point
A)Hexane
B)2-Methylpentane
C)3-Methylpentane
D)2, 2-Dimethylbutane
Ans: D
79.Which among the following gases can be liquified easily ?
A)Chlorine
B)Nitrogen
C)Oxygen
D)Hydrogen
Ans: A
80.Ozone is present as a chief constituent in which region of the atmosphere ?
A)Troposphere
B)Stratosphere
C)Mesosphere
D)Thermosphere
Ans: B
81.The plot of square root of frequency of X-ray emitted against atomic number led to suggestion of which law/rule ?
A)Periodic law
B)Modern periodic law
C)Hund’s rule
D)Newland’s law
Ans: B
82.The compound that yields only ketonic compound/s on ozonolysis is
A)But-2-ene
B)Pent-2-ene
C)2, 3-Dimethylbut-2-ene
D)2-Methylbut-2-ene
Ans: C
83.Which among the following metals is refined by electrolytic method ?
A)Aluminium
B)Bismuth
C)Tin
D)Lead
Ans: A
84.The two monomers used in the preparation of dextron are
A)3-hydroxy butanoic acid and 3-hydroxy pentanoic acid
B) ∈ amino caproic acid and glycine
C)Isobutylene and isoprene
D)Lactic acid and glycolic acid
Ans: D
85.Which oxyacid of sulphur contains S-S single bond ?
A)Oleum
B)Marshall’s acid
C)Dithionic acid
D)Thiosulphuric acid
Ans: C
86.Amongst the followings, select the element having highest ionization enthalpy
A)Sodium
B)Potassium
C)Beryllium
D)Magnesium
Ans: C
87.Butylated hydroxy toluene is used in
A)preventing oxidative rancidity of fats
B)preserving food grains
C)killing bacteria in living tissues
D)reducing stress and anxiety
Ans: A
88.Deficiency of which vitamin causes degeneration of spinal cord ?
A)E
B)K
C)B12
D)A
Ans: C
89.Bond order of which among the following molecules is zero ?
A)F2
B)O2
C)Be2
D)Li2
Ans: C
90.Benzene can be conveniently converted into n-propyl benzene by
A)Friedel – Craft alkylation with n-propyl chloride
B)Friedel – Craft acylation with propionyl chloride followed by Wolff – Kishner reduction
C)Friedel – Craft acylation with propionyl chloride followed by catalytic hydrogenation
D)Friedel – Craft acylation with propionyl chloride followed by reduction with LiAlH4
Ans: B
91.One mole of stachyose on hydrolysis yields
A)1 mole of glucose + 1 mole of fructose + 2 mole of galactose
B)2 mole of glucose + 1 mole of fructose + 1 mole of galactose
C)1 mole of glucose + 2 mole of fructose + 1 mole of galactose
D)2 mole of glucose + 2 mole of fructose
Ans: A
91. Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms presence of
(A) six carbon atoms linked in straight chain (B) secondary alcoholic group in glucose
(C) aldehyde group in glucose (D) primary alcoholic group in glucose
Ans: C
92. How is sodium chromate converted into sodium dichromate in the manufacture of potassium dichromate from chromite ore ?
(A) By the action of concentrated sulphuric acid (B) By roasting with soda ash
(C) By the action of sodium hydroxide (D) By the action of lime stone
Ans: A
93. In dry cell, what acts as negative electrode ?
(A) Zinc (B) Graphite (C) Ammonium chloride (D) Manganese dioxide
Ans: A
94. Select the compound which on treatment with nitrous acid liberates nitrogen.
(A) Nitroethane (B) Triethylamine (C) Diethylamine (D) Ethylamine
Ans: D
95. Which of the following compounds when treated with dibenzyl cadmium yields benzyl methyl ketone ?
(A) Acetone (B) Acetaldehyde (C) Acetic acid (D) Acetyl chloride
Ans: D
96 .Which halide of magnesium has highest ionic character ?
(A) Chloride (B) Bromide (C) Iodide (D) Fluoride
Ans: D
97. Which of the following aminoacids is basic in nature ?
(A) Valine (B) Tyrosine (C) Arginine (D) Leucine
Ans: C
98. The relation between solubility of a gas in liquid at constant temperature and external pressure is stated by which law ?
(A) Raoult’s law (B) van’t Hoff Boyle’s law (C) van’t Hoff Charles’ law (D) Henry’s law
Ans: D
99. Which among the following phenolic compounds is most acidic in nature ?
(A) p-aminophenol (B) phenol (C) m-nitrophenol (D) p-nitrophenol
Ans: D
100. Name the catalyst used in commercial method of preparation of phenol.
(A) Silica (B) Calcium phosphate (C) Anhydrous aluminium chloride (D) Cobalt naphthenate Ans: D
(A) six carbon atoms linked in straight chain (B) secondary alcoholic group in glucose
(C) aldehyde group in glucose (D) primary alcoholic group in glucose
Ans: C
92. How is sodium chromate converted into sodium dichromate in the manufacture of potassium dichromate from chromite ore ?
(A) By the action of concentrated sulphuric acid (B) By roasting with soda ash
(C) By the action of sodium hydroxide (D) By the action of lime stone
Ans: A
93. In dry cell, what acts as negative electrode ?
(A) Zinc (B) Graphite (C) Ammonium chloride (D) Manganese dioxide
Ans: A
94. Select the compound which on treatment with nitrous acid liberates nitrogen.
(A) Nitroethane (B) Triethylamine (C) Diethylamine (D) Ethylamine
Ans: D
95. Which of the following compounds when treated with dibenzyl cadmium yields benzyl methyl ketone ?
(A) Acetone (B) Acetaldehyde (C) Acetic acid (D) Acetyl chloride
Ans: D
96 .Which halide of magnesium has highest ionic character ?
(A) Chloride (B) Bromide (C) Iodide (D) Fluoride
Ans: D
97. Which of the following aminoacids is basic in nature ?
(A) Valine (B) Tyrosine (C) Arginine (D) Leucine
Ans: C
98. The relation between solubility of a gas in liquid at constant temperature and external pressure is stated by which law ?
(A) Raoult’s law (B) van’t Hoff Boyle’s law (C) van’t Hoff Charles’ law (D) Henry’s law
Ans: D
99. Which among the following phenolic compounds is most acidic in nature ?
(A) p-aminophenol (B) phenol (C) m-nitrophenol (D) p-nitrophenol
Ans: D
100. Name the catalyst used in commercial method of preparation of phenol.
(A) Silica (B) Calcium phosphate (C) Anhydrous aluminium chloride (D) Cobalt naphthenate Ans: D