Organic Compounds Containing Nitrogen · PDF fileOrganic Compounds Containing Nitrogen Sub ......

Organic Compounds Containing Nitrogen

Sub Topic – I: Amines

1. Which of the following statements is wrong?

I) Amines possess pyramidal shape

II) Amines act as bronsted bases

III) 10 amines show metamerism

IV) 20 amines show metamerism

1) I, II and III 2) II, III and IV 3) III only 4) I, II and IV

2. N, N-dimethyl butanamine-2 contains

1) Six sp3 hybridised carbon atoms 2) Seven sp3 hybridised atoms

3) Two sp3 hybridised nitrogen atoms 4) 1 and 2 are correct

3. Primary amino group is absent in

1) p-amino phenol 2) o-amino phenol

3) N-methyl ethanamine 4) Phenyl amine

4. A): n-propyl amine is 10 but isopropyl amine is 20amine.

R): n-propyl amine and isopropyl amine are position isomers.

1) A and R are true and R explains A.

2) A and R are true but R does not explain A.

3) A is true but R is false.

4) A is false and R is true.

5. N, N-dimethyl butanamine-2 is the functional isomer of

1) N–butanamine–2 2) N-methyl-2-ethyl butanamine-2

3) Trimethyl Amine 4) Triethyl Amine

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6. n-butyl amine and isobutyl amine are ---- isomers

1) Optical 2) Functional 3) Chain 4) Position

7. How many isomers with the molecular formula C4H11N?

1) 1 2) 2 3) 3 4) 4

8. represents

(a) Primary amine (b) Secondary amine (c) Tertiary amine (d) All of these

9. How many primary amines are possible for the formula ?

(a) 5 (b) 6 (c) 3 (d) 4

Key

1) 4 2) 1 3) 3 4) 4 5) 4 6) 3 7) 4 8) 4 9) 4

3 9C H N

4 11C H N



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Sub Topic – II : Nitro Benzene

1. NitroBenzene HydrazoBenzene. Here the reagent is

1) Sn + HCl 2) Zn + NH4Cl 3) Zn + NaOH 4) LiAlH4

2. In the reaction the equivalent weight of Nitrobenzene is

1) M 2) 3) 4)

3. and R-O-N = O are a pair of

1) Chain Isomers 2) Metamers 3) Functional Isomers 4) Epimers

4. Here the reagent is

1) Zn + NH4Cl 2) Zn + NaOH 3) Sn + HCl 4) LiAlH4

5.

The ratio of the number of moles of Hydrogen atoms required to get 1 mole of

azobenzene and 1 mole of hydrazobenzene

1) 4: 5 2) 5: 4 3) 1: 1 4) 2: 3

6. + HNO3(conc) the main product of the reaction

M2

M4

M6

O||

R N O

NO2Azobenzene

Hydrazobenzene

N N

NH NH

C0100

conc. 4SO2H



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1) Aniline 2) O – dinitrobenzene

3) m – dinitrobenzene 4) P – dinitrobenzene

7. Nitrobenzene is reduced by Zn and alcoholic KOH

1) C6H5NH2 2) C6H5NH-NH C6H5

3) C6H5 - N = N - C6H5 4) C6H5 - NH - CO - C6H5

8. Nitro benzene on reduction with Zinc and NH4Cl gives

1) Azo benzene 2) Aniline

3) Hydrazobenzene 4) N- Phenyl hydroxyl amine

9. The structure of the compound formed when Nitrobenzene is reduced by lithium

aluminium hydride (Li AlH4)

1)

2)

3)

4)

10. Nitro benzene undergoes reduction with Zn/ alcoholic KOH to from a compound

'A'. The numbers of sigma and Pi bonds in ‘A’ respectively are

1) 17, 6 2) 27, 6 3) 27, 8 4) 17, 8

NH NH

NHOH

2NH

N N



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Key

1)3 2) 4 3) 3 4) 3 5) 1 6) 3 7) 2 8) 4 9) 4 10) 2

Sub Topic – III : Aniline

1. can react with a maximum of ........... moles of CH3I

1) 4 2) 3 3) 2 4) 1

2. In the nitration of aniline the amino group is protected by conversion into

1) Tribromo derivative 2) Isocyanide

3) Diazonium salt 4) Acetyl derivative

3. The following turns brown on exposure to air and light

1) Nitrobenzene 2) m-dinitrobenzene

3) Aniline 4) Benzene diazonium chloride

4. In the preparation of N-phenyl benzene sulphonamide from aniline, the reagent

used is

1) H2SO4 2) SOCl2 3) C6H5Cl 4) C6H5SO2Cl

5. Which of the following is correct with respect to the order of basic natures of

different amines given below?

1)

2)

NH23CH2NH3CH3NH2NH5H6C

3NH2NH5H6C2NH3CHNH23CH



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3)

4)

6. Which of the following methods is used to prepare Aniline on large scale?

A) C6H5NO2 + 6(H) C6H5NH2 + 2H2O

B) C6H5NO2 + 6(H) C6H5NH2 + 2H2O

C) C6H5OH2+NH3 C6H5NH2+H2O

D) C6H5Cl + 2NH3 C6H5NH2 + NH4Cl

1) A only 2) B or C 3) C only 4) A or D

7. Aniline is not the major Product in one of the following reaction. Identify that

reaction

1) C6H5-OH + NH3

2) C6H5NO2 + Zn Powder

3) C6H5Cl+ NH3

4) C6H5NO2 + Fe + H2O

CH NH CH NH C H NH NH3 2 3 2 36 52

2NH5H6C3NH2NH3CHNH23CH

O3HFe

HClSn

C03002ZnCl

20300

Znclc

alcoholic KOH

0

2

200Cu O high pressure

Hcl



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8. Which of the following is obtained in a Carbylamine reaction?

1) C6H5NH2 2) COCl2 3) C6H5CN 4) C6H5NC

9. Which of the following reaction can produce aniline as the main product?

1) C6H5NO2 + Zn/KOH 2) C6H5NO2 + Zn/NH4Cl

3) C6H5NO2 + Li Al H4 4) C6H5NO2 + Zn/HCl

10. Most basic among the following is

1) Benzyl Amine 2) Aniline 3) Acetanilide 4) p-nitro aniline

11. Most reactive towards electrophillic substitution is

1) Aniline Hydro Chloride 2) Aniline

3) Nitro Benzene 4) N-Acetyl Aniline

12. In-correct statement about aniline is

1) It is less basic than ethyl amine. 2) It is steam volatile

3) On reaction with Na, it gives H2. 4) It is highly soluble in water.

13. On reduction, primary amine is formed by

1) 1-Nitro Ethane 2) Ethyl Nitrite 3) Azo Benzene 4) Ethyl Carbylamine

14. Carbyl amine reaction is answered by

1) Methenamine 2) Nitro Methane 3) Acetamide 4) Triethylamine

15. Zwitterion is formed by

1) Aniline 2) Sulfanilic Acid 3) Glycine 4) Both 2 and 3

16. Benzamide can be converted into aniline by the action of

1) Br2/CCl4 2) Br2/water 3) Br2/KOH 4) Br2/red P

17. The process that does not yield an amine is

1) Action of ammonia on RX

2) Reduction of aldoxime with Na/alcohol

3) Acid hydrolysis of alkyl cyanide

4) Reduction of amide with LAH



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18. Among different aliphatic amines, correct order of basic strengths in vapour

state is

1) 30>20>10 2) 10 >20>30 3) 20>10>30 4) 30>10>20

19. Conversion of a primary amide into a primary amine is called

1) Gabriel’s phthalimide reaction 2) Hofmann bromamide reaction

3) Carbylamine reaction 4) Hinsberg’s reaction

20. Ethanamine can be obtained from methyl iodide by the action of alc.KCN

followed by

1) Hydrolysis 2) Oxidation

3) Reduction 4) Action of NH3/heat

21. The following amide does not undergo Hoffmann’s degradation

A) Propionamide B) N-methyl butanamide

C) Butanamide D) N, N-dimethylbutanamide

1) D only 2) C only 3) C and D 4) B and D

22. In-correct statement among the following is

I) LiAlH4 can reduce an amide into amine without change in the number of

carbon atoms.

II) A primary amide can be reduced to a primary amine by Br2/KOH with same

number of Carbon.

III) A primary amide can be reduced to a primary amine by LiAlH4 with (n-1)

carbon atoms.

IV) Hoffmann’s bromamide reaction is useful to prepare aniline from

Benzamide.

1) II only 2) I only 3) III and IV 4) II and III

23. N, N-dimethylethanamine on reduction with LiAlH4 gives

1) N-methylethanamine 2) N, N-dimethylethanamine



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3) Ethanamine 4) Trimethylamine

24. Most reactive towards electrophillic substitution is

1) Aniline hydro chloride 2) Aniline

3) Nitro Benzene 4) N-acetyl aniline

25. On reduction, primary amine is formed by

1) 1-Nitro Ethane 2) Ethyl Nitrite 3) Azo Benzene 4) Ethyl Carbyl Amine

26. Butanone oxime on reduction with Na/C2H5OH gives

1) 30 Amine 2) 10 Amine 3) 20 Amine 4) 10 Amide

27. Which of the following groups will increase basic strength of aniline?

1) -NO2 in ortho or para 2) -CHO in ortho or para

3) -SO3H in ortho or para 4) -OH in ortho or para

28. Aniline gives meta derivative as major product with

1) CH3COCl/pyridine 2) HNO3+H2SO4

3) Br2/water 4) CH3Cl/pyridine

29. Bromination of aniline in acid medium results ------ as major product

1) 2, 4, 6-tri bromo aniline 2) 3-bromo aniline

3) 2-bromo aniline 4) 4-bromo aniline

30. Ethyl amine can be distinguished from Aniline by

1) Tollen’s reagent 2) Schiff’s reagent

3) Azo dye test 4) Carbylamine test

31. A mixture of three amines A, B and C is treated with Benzene sulphonyl chloride

and filtered.

B is obtained in the filtrate. The mixture containing A and C is treated with

KOH so that A becomes soluble while C does not. Now, A, B and C are

1) Aliphatic primary, secondary and tertiary



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2) Aliphatic secondary, tertiary and primary

3) Aliphatic primary, tertiary and secondary

4) Aliphatic tertiary, secondary and primary

32. Which of the following on Hoffmann’s bromamide reaction gives alkanamine?

1) RCH2NH2 2) RCONHR’ 3) RCONH2 4) RCOONH4

33. Dye test is used to distinguish

1) Ethanamine and Methanamine 2) Methanamine and Propanamine-1

3) Benzenamine and Ethanamine 4) Urea and Acetanilide

34. Aniline is

1) More basic than ammonia 2) More basic than p-amino phenol

3) More basic than p-nitro aniline 4) As basic as methyl amine

35. Acetanilide on nitration followed by hydrolysis yields --- as main product.

1) 4-nitro aniline 2) 2, 4, 6-trinitro aniline

3) 2-nitro aniline 4) 3-nitro aniline

36. Among the following, strongest base is

1) Aniline 2) P-Nitro Aniline 3) M-Nitro Aniline 4) Benzyl Amine

37. The compound which on reaction with aqueous nitrous acid at low temperature

produces in oily nitrosamine is

(a) Methylamine (b) Ethylamine (c) Diethylamine (d) Triethylamine

38. Acetamide is treated separately with the following reagents. Which one of these

would give methylamine?

(a) PCl5 (b) Soda lime

(c) NaOH+Br2 (d) Hot Concentrated H2SO4

39. Carbylamine test is performed in alcoholic KOH by heating a mixture of

(a) Chloroform and silver powder



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(b) Tri halogenated methane and a primary amine

(c) An alkyl halide and a primary amine.

(d) An alkyl cyanide and a primary amine.

40. Chlorobenzene can be prepared by reacting aniline with

(a) Hydrochloric acid

(b) Cuprous chloride

(c) Chlorine in the presence of anhydrous aluminium chloride

(d) Nitrous acid followed by heating with cuprous chloride

41. Amongst the following, the most basic compound is

(a) Benzyl amine (b) Aniline (c) Acetanilide (d) p-nitroaniline

42. Reaction of RCONH2 with a mixture of Br2 and KOH gives RNH2 as the main

product. The intermediates involved in the reaction are

(a) (b)

(c) R C N (d)

43. Examine the following two structures for the anilinium ion and chose the correct

statement from the ones gives below.

(a) II is not acceptable canonical structure because carbonium ions less stable than

ammonium ions.

(b) II is not an acceptable canonical structure because it is non aromatic.

O||R C NHBr R NHBr

O||

R C N Br

Br

3NH 3NH



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(c) II is not an acceptable canonical structure because nitrogen has 10 valence

electrons.

(d) II is an acceptable canonical structure.

44. Which of the following statement is not correct?

(a) Replacement of halogen by NH2 in alkyl halide is a nucleophilic substitution

reaction.

(b) Aryl halides show more reactivity as compared to alkyl halides in the

replacements of halogen by NH2 group.

(c) During the replacement of halogen by NH2 group, ammonia is taken in large

excess so as to avoid the formation of 20 and 30 amines.

(d) Tertiary alkyl halide generally produces alkene instead of the replacement of

halogen by NH2 group.

45. Which of the following statements is not correct?

(a) Primary amines show intermolecular hydrogen bonding.

(b) Secondary amines show intermolecular hydrogen bonding.

(c) Tertiary amines show intermolecular hydrogen bonding.

(d) Amines have lower boiling points as compared to those of alcohols and carboxylic

acids of comparable.

46. Which of the following statements is not correct?

(a) Aliphatic amines are stronger bases than ammonia.

(b) Aromatic amines are stronger bases than ammonia.

(c) The alkyl group in alkyl ammonium ion more stabilizes the ion relative to the

amine.

(d) The aryl group in aryl ammonium ion less stabilizes the ion relative to the amine.



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47. Hinsberg’s reagent is

(a) Phenyl isocyanide (b) Benzene sulphonyl chloride

(c) p-toluenesulfonic acid (d) o-dichlorobenzene

48. On warming an aqueous solution of benzenediazonium chloride, the product

obtained is

(a) Benzene (b) Aniline (c) Phenol (d) Amide

49. Which of the following reagents can convert benzenediazonium chloride into

benzene?

(a) Water (b) Acid (c) Hypophosphorous acid (d) HCl

50. Hofmann’s method to separate amines in a mixture uses the reagent?

(a) Benzene sulphonyl chloride (b) Diethyl oxalate

(c) Benzyl isocyanide (d) p-toluenesulfonic acid

51. Which of the following compounds will dissolve in an alkali solution after it has

undergone reaction with Hinsberg reagent?

(a) (b)

(c) (d)

52. Activation of benzene ring by-NH2 in aniline can be reduced by treating with

(a) Dilute HCl (b) Ethyl alcohol (c) Acetic acid (d) Acetyl chloride

53. Which of the following orders is correct regarding the basic strength of

substituted aniline

(a) p- nitroaniline> p-aminobenzaldehyde> p-bromoaniline

(b) p-nitroaniline<P-bromoaniline< p- aminobenzaldehyde

(c) p- Nitroaniline< p - aminobenzaldehyde< p - bromoaniline

(d) p - Nitroaniline>p - aminobenzaldehyde< p - bromoaniline

2 5 2(C H ) NH3 6 5

|CH3

CH N C H

3 2CH NH 6 5 6 5C H NHC H



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54. Which of the following orders regarding the basic strength of substituted aniline

is correct?

(a) p-methylaniline> p-chloroaniline> p- aminoacetophenone

(b) p-methylaniline p- aminoacetophenone> p- chloroaniline

(c) p-aminoacetophenone>p-methylaniline> p - chloroaniline

(d) p-aminoacetophenone>p-chloroaniline> p- methylaniline

55. The number of resonating structures of aryl ammonium ion is

(a) 2 (b) 3 (c) 4 (d) 5

56. The number of resonating structures of aniline is

(a) 2 (b) 3 (c) 4 (d) 5

57. The bromination of aniline produces

(a) 2- bromoaniline (b) 4-bromoaniline

(c) 2, 4, 6-tribromoaniline (d) 2, 6-dibromoaniline

58. A positive carbylamine test is given by

(a) N, N-dimethylaniline (b) 2, 4-dimethylaniline

(c) N-methyl1-o-methylaniline (d) p- methylbenzylamine

59. Among the following, the strongest base is

(a) (b)

(c) (d)

60. Identify the product C in the given reaction.

(a) (b)

(c) (d)

6 5 2C H NH 2 6 4 2P NO C H NH

2 6 4 2m NO C H NH 6 5 2 2C H CH NH

0Na/C H OH HNO Cu/300 C2 5 23CH C N A B C

3CH COOH 3 2CH CH NH OH

3 2CH CONH 3CH CH O



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61. What is the product when reacts with nitrous acid?

(a) (b)

(c) (d)

62. Which of the following is activating group for nitration reaction?

(a) (b) (c) (d) -CH = O

63. Which of the following having highest value of Kb?

(a) (b)

(c) (d)

64. Strongest base among the following is

(a) (b) (c) (d)

65. Identify the product C in the given reaction

(a) CH3 - COOH (b) CH3 - CH2 - NH - OH

(c) CH3 - CONH2 (d) CH3 - CH = O

66. Match the following.

Column - I Column - II

(A) Nitrobenzene Azobenzene (P) LiAIH4

(B) Aniline Phenyl isocyanide (Q) NaNO2+ HCl+Cu2Cl2

6 5 2 2C H CH NH

6 5C H N N

6 5 2C H CH N N

6 5 2C H CH OH 6 5 2C H NH

O O|| ||C O C

O||

O C R C N

6 5 3C H NH CH

6 5 6 5C H N H C H

3 2CH CONH 6 5 2 2C H CH NH

2NH NH 2 46CH N 3 3CH N

Na/C H OH HNO Cal/300 C2 5 33CH C N A B C



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(C) Aniline Chlorobenzene (R) CHCl3+KOH

(D) Ethylamine Ethanol (S) NaNO2+ HCl (aq)

A B C D

1) P Q R S

2) P R Q S

3) S R Q P

4) P R S Q

67. Which amine is heated with chloroform and alcoholic KOH, a bad odour

compound is formed. The compound is

(a) An alcohol (b) An aldehyde (c) A cyanide (d) An isocyanide

68. The molecular formula of methyl isocyanate is

(a) (b) (c) (d)

69. The product of the reaction of the alcoholic silver nitrite with ethyl bromide is

(a) Ethene (b) Ethyl nitrite (c) Ethyl alcohol (d) Nitro ethane

70. Which one of the following on reduction with yields a secondary amine?

(a) Methyl cyanide (b) Nitro ethane

(c) Methyl isocyanide (d) Acetamide

71. When methyl cyanide is hydrolysed in presence of alkali, it forms

(a) Acetamide (b) Methane (c) (d) Acetic acid

72. Acetamide reacts with in alkaline medium to form

(a) (b) (c) (d)

73. Treatment of ammonia with excess of ethyl chloride will yield

(a) Diethylamine (b) Methylamine

(c) Tetraethyl ammonium chloride (d) Ethane

3CH NCO 3CH CNO 3CH NCS 3CH CN

4LiAlH

2 2CO H O

NaOBr

3NH 3 2CH NH 3CH CN 3 2 2CH CH NH



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74. The correct order of the increasing basicity of methylamine, ammonia and

aniline is

(a) Methylamine < aniline < ammonia (b) Methylamine < ammonia < aniline

(c) Aniline < methylamine < ammonia (d) Aniline < ammonia < methylamine

75. CH3NH2 +CHCl3 + 3 KOH X + Y + 3 H2O: compounds X and Y are

(a) (b)

(c) (d)

76. In the following series of reactions, (A) is

(a) (b) (c) (d)

77. 2/3 2 ( ) ( ) ( )Ni HNaCN Acetic anhydrideCH CH Cl X Y Z

(Z) in the above reaction sequence is

(a) (b)

(c) (d)

78. A primary amine is formed from an amide, by the treatment of bromine and

alkali. The primary amine has

(a) 1 Carbon atom less than amide (b) 1 Carbon atom more than amide

(c) 1 Hydrogen atom less than amide (d) 1 Hydrogen atom more than amide

79. Acetonitrile on reduction gives

(a) Propanamine (b) Methanamine (c) Ethanamine (d) None of these

80. An isonitrile on reduction gives

(a) Amine (b) Amine

(c) Amine (d) Quaternary ammonium salts

3 3CH CN KCl 3 3CH NC KCl

3 2 3CH CONH KCl 3 2 3CH NC K CO

2 2 5( ) Re ( )A duction B HNO C H OH

3CH CN 3CH NC 2 5C H CN 3 2CH NO

3 2 2 3CH CH CH NHCOCH 3 2 2 2CH CH CH NH

3 2 2 3CH CH CH CONHCH 3 2 2 3CH CH CH CONHCOCH



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81. Ethyl chloride on heating with forms a compound (X). The functional

isomer of (X) is

(a) (b) (c) (d) None of these

82. The reduction of which of the following compound would yield secondary amine

(a) Alkyl nitrile (b) Carbylamine

(c) Primary amine (d) Secondary nitro compound

83. Containing compound + KCl+ .

Nitrogen containing compound is

(a) (b)

(c) (d)

Key

1) 3 2) 4 3) 3 4) 4 5) 4 6) 1 7) 2 8) 4 9) 4 10) 1

11) 2 12) 4 13) 1 14) 1 15) 4 16)3 17) 3 18) 1 19) 2 20) 3

21) 4 22) 4 23) 2 24) 2 25) 1 26) 2 27) 4 28) 2 29) 2 30) 3

31) 3 32) 3 33) 3 34) 3 35) 1 36) 4 37) 3 38) 3 39) 2 40) 4

41) 1 42) 1 43) 3 44) 2 45) 3 46) 2 47) 2 48) 3 49) 3 50) 2

51) 3 52) 4 53) 3 54) 1 55) 1 56) 4 57) 3 58) 4 59) 4 60) 4

61) 3 62) 2 63) 4 64) 3 65) 4 66) 2 67) 4 68) 1 69) 4 70) 3

71) 4 72) 2 73) 3 74) 4 75) 2 76) 1 77) 1 78) 1 79) 3 80) 2

81) 3 82) 2 83) 4

AgCN

2 5C H NC 2 5 2C H NH 2 5C H CN

3 2 3CH NH CHCl KOH nitrogen 2H O

3CH C N 3 3CH NH CH

3CH N C

3CH N C



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Sub Topic – IV : Diazonium Salts

1. Benzene diazonium chloride on reaction with KCN in the presence of CuCN

yields X. X on hydrolysis yields Y. Now, Y can also be obtained from

1) Toluene by the action of Cl2/FeCl3 2) Toluene by oxidation by KMnO4

3) Toluene by nitration 4) Toluene by sulfonation

2. where regarding X, correct statement is

1) It is weakly acidic. 2) It liberates H2 with Na.

3) It is stronger acid than acetic acid. 4) 1 and 2

3. Benzene diazonium salt on reduction with X yields Benzene. X is

1) K2Cr2O7/H+ 2) O3 3) H3PO4 4) H3PO2

4. A): Diazonium ion acts as an electrophile.

R): Terminal nitrogen atom in diazo group is positively charged.

1) A and R are true and R explains A.

2) A and R are true but R does not explain A.

3) A is true but R is false.

4) A is false but R is true.

5. During diazo coupling, the following group is retained

1) N=N 2) N2Cl 3) NH2 4) NHR’

6. Which of the following is an example of electrophillic substitution?

1) Diazotization 2) Sandmayer Reaction

3) Diazo Coupling 4) Action of KCN on ArN2Cl

7. Which of the following is the correct order of ease of coupling with C6H5N2Cl?

A) Benzene B) Nitro Benzene C) Phenol D) Chlorobenzene

HClNXClNAr SOHdil 2.

242.



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1) A > D > B > C 2) C > A > B > D 3) C > A > D > B 4) B > D > A > C

8. Coupling of phenol with benzene diazonium salt yields

1) o-hydroxy derivative of salt 2) p-hydroxy derivative of salt

3) m-hydroxy derivative of salt 4) a mixture 1, 2 and 3

9. N,N-dimethyl aniline on coupling with C6H5N2Cl yields

1) 4-(N,N-dimethyl) amino azobenzene

2) 4-(N,N-dimethyl) nitroso benzene

3) 4-(N,N-dimethyl) amino azo benzene

4) 4-(N,N-dimethyl) amino hydrazobenzene

10. Which of the following reactions is an example of Sandmeyer reaction?

(a) (b)

(c) (d)

11. Which of the following reaction is an example of Gattermann reaction?

(a) (b)

CuBr

Br2 4N HSO Br2 4N HSO

Cu powderHBr

2 4N HSO

KI

I 2 4N HSO

CuCN

CN

CuBr

Br2 4N HSO

Cu powderHBr

Br2 4N HSO



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(c) (d)

12. Benzenediazonium chloride on reaction with phenol in weakly basic medium

gives

(a) Diphenyl ether (b) P- hydroxyazobenzene

(c) Chlorobenzene (d) Benzene

13. Which of the following is responsible for the colour of diazo compounds?

(a) Benzene ring (b) -N = N-group (c) -OH group (d) -NH2 group

14. Coupling between arenediazonium cation and amines takes place most rapidly at

pH

(a) 10-14 (b) 0-2 (c) 5-7 (d) 5-8

15. ‘A’ is

(a) (b)

(c) (d)

2 4N HSO

CuCN

CN

KI

I2 4N HSO

2 3N Cl CH 3OCH A

N N

3OCH

3CHN

3OCH

3CHN

N

3CH

NOH

N OHN



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Key

1)2 2) 4 3) 4 4) 3 5) 1 6) 3 7) 3 8) 2 9) 1 10) 1 11) 2 12) 2

13) 2 14) 3 15) 2



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