7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
ANSWERS TO ORGANIC CLASS SHEET 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
c c d c c c c c c a a c d d c a b d b a
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
c c c c a d a c c d c c a c c c a a c c
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
c c d b a ac c a b c d c c a d c a b b a
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
d a d a c a b a d b b a d c b b b ac b d
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
a a c b a a c a d d a a c a a d a cd ab ad
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
c a b d b d d b c d c a a b b c d acd d a
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
a a a b b a b d d a b a c b a b c d a c
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
d c a c c c b c e a c e d c b d d c b d
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
d d c a b d abd c b d ac cd abcd ac ac c a a b a
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200
d c a c c c c d ab c a b c c a a a b a d
201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219
c d c c c b b bc ac ab ac a c a b b c a
ANSWERS TO CLASS SHEET 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14
c c d a d d d c d b d b b b a
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
d b c d a b b a a a b b e c b d d ae cd c
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 b b c d c c acd b a c a bc b c b b abc a b b
56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
ab cd b d a c a ab d c b b c b b c b a b
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
a a c d a d b c b d a d a bc a c a d a
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 1
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
c c b d b d d c bc c d c a b a ab c ac b
116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 1
bc
d
b ac a d bcd a a b d a abc
d
a a a abc
d
c a a d
136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 1
b a b b a d b d d b d b d c b a a a a a
156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 1
d c c b b a a c c b c b a a d a a d b a
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 1
b b d a d a b b a a b b b c d a ac b d
196
Choos e the correct option/s. one or more options may be correct
1. Which of the following statements is true about a homologous series?
(a) Adjacent numbers of a group differ by a mass of 14
(b) Adjacent numbers of a group differ by one group
(c) Members of a homologous series can be prepared by the s ame general methods
(d) Members of a homologous series have the same physical and chemical properties
Solution: a, b, c
2. The large number of organic compounds is due to
(a) The valency of carbon
(b) The smal l size of carbon
(c) A s pecial property of carbon, known as catenation
(d) None of the above
Solution: c
3. How many isomers are possible for the alkyl group
(a) two (b) three (c) four (d) five
Solution: c
4. Which of the following compounds will have only primary and tertiary carbon?
(a) penta ne (b) 2-methylbutane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(c) 2, 3-dime thylbutane (d) 2-bromo-2-methylpropane
Solution: c, d
5. Which of the following compounds will have only primary and secondary carbon?
(a) propa ne (b) 2,2,3-trimethylpentane
(c) 2-methylpropane (d) n-propylbromide
Solution: a, d
6. Which of the following compounds has an isopropyl group?
(a) 2-methylpentane
(b) 2,2-dimethylpentane
(c) 2,2,3,3-tetramethylpentane
(d) 2,2,3 -trimethylpenatane
Solution: a
7. The general molecular formula of an alkyne is
(a) (b)
(c) (d)
Solution: c
8. The IUPAC name of
Is
(a) 1,2-dichloropropane (b) 3,3-dichloropropane
(c) 1,1-dichloropropane (d) dichloropropane
Solution: c
9. The IUPAC name of is
(a) 1,1,2,2 -tetramethylethane
(b) 1,2-dii sopropylethane
(c) 2,3-dimethylbutane
(d) 2,3,3-trimethylbutane
Solution: c
10. The IUPAC name of is
(a) propoxymethane (b) methoxypropane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
17. The IUPAC name of
(a) 2-methylpentane (b) 4-methylpentene-2
(c) 2-hexene (d) 2,4-dimethylbutene
Solution: b
18. The IUPAC name of is
(a) 1-isopropylethylene (b) 1,1-dimethyl-2-propane
(c) 3-methyl -1-butene (d) 2-vinylpropane
Solution: c
19. The IUPAC name of
(a) 3-methylbutene-1 (b) 2-methylbutene-1
(c) vinylmethylethane (d) propylethene-1
Solution: b
20. The IUPAC name of
(a) 2-ethyl -2-pentene (b) 4-ethyl-2-pentene
(c) 3-methyl -3-hexene (d) 3-methyl -2-pentene
Solution: c
21. The IUPAC name of is
(a) 1,1-dimethyl-3-butene
(b) 3,3 ,-dimethyl-1-butene
(c) 3,3,3 -trimethyl-1-propene
(d) 1,1,1-trimethyl-2propene
Solution: b
22. The IUPAC name of the compound
(a) 2-methylpent-1-ene-3-yne
(b) 4-methylpent-4-ene-2-yne
(c) 2-methylpent-2-ene-3-yne
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(d) 2-methylpent-3-yne-2-ene
Solution: a
23. The IUPAC name of
(a) 3-methyl -2-ethylbutene-1
(b) 3-ethyl -3-methylnutene-1
(c) 2-ethyl-3-methylbutene-1
(d) ethyl isopropylethene
Solution: c
24. The IUPAC name of
(a) 2-methylbutanal (b) butan-2-aldehyde
(c) 2-ethylpropanal (d) 3-methyl isobutyradelhyde
Solution: a
25. The IUPAC name of
(a) pentanol (b) 1-pentanol
(c) 2-methyl -4-butanol (d) 3-methyl -1-butanol
Solution: d
26. The IUPAC name of
(a) 2-methyl -1-pentanol (b) 2-ethylbutanol -1
(c) 2-ethylpentanol -1 (d) 3-ethylbutanol -1
Solution: b
27. The IUPAC name for
(a) 2-methyl -2,4-pentanediol
(b) 1,1-dimethyl-1,3-butanediol
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(c) 1,3,3-trimethyl-1,3-propanedoil
(d) 4-methyl-2,4-pentadiol
Solution: a
28. The IUPAC name for
(a) 5-carboxy-2-methylpentene
(b) 4-isopropyl-3-butanoic acid
(c) 5-methyl-4-hexanoic acid
(d) none of these
Solution: d
29. The s tructure of 4-methylpentete-2 i s
(a)
(b)
(c)
(d)
Solution: a
30. 2-methyl-2-butene is represented as
Solution: a
31. The IUPAC name of
(a) tert iary butylbromide
(b) isobutylbromide
(c) 2-bromo-2-methylpropane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(d) 2-methyl-2-propylbromide
Solution: c
32. The IUPAC name of is
(a) 1-bromo-3-butene (b) 1-bromo-2-butene
(c) 2-butene-1-bromide (d) 4-bromo-2-butene
Solution: b
33. The IUPAC name of is
(a) tert.butylalcohol (b) 2-methyl -2-propanol
(c) 2-methyl -1-butanol (d) 2-propa nol
Solution: b
34. The IUPAC name of is
(a) methyl -n-propylketone (b) 2-penta none
(c) 3-penta none (b) n-propylmethylketone
Solution: b
35. The IUPAC name of
(a) 3-ethyl -2,2,3-trimethylheptane
(b) 2,2,3-trimethyl-3-n-butylpentane
(c) 3-methyl -3-isopropylheptane
(d) 2,2-dimethyl-3-ethyl-3-n-butylbutane
Solution: a
36. The IUPAC name of
(a) 2-ethyl -4-methylhexane
(b) 3,5-dimethylheptane
(c) 5-ethyl-3-methylhexane
(d) 2,4-die thylpentane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
Solution: b
37. The IUPAC name of
(a) 1,1,2-trimethyl-1,3-butanediol
(b) 1,2-dimethyl-2,4-pentanediol
(c) 2,3-dimethyl-2,4-pentanediol
(d) 1,2,3,4 -tetramethyl-1,3-propanediol
Solution: c
38. The IUPAC name of
(a) 4-methyl -2-pentyne (b) methyl isopropylacetylene
(c) 4,4-dimethyl-2-butyne (d) 2-methyl -4-pentyne
Solution: a
39. The s tructure of 4-methyl-2-penten-1-ol is
(a) (b)
(c) (d)
Solution: a
40. Which of the following compounds are named correctly?
(a) (5-methyl-1-hexanal)
(b)
(5-methyl-2-hexanoic acid)
(c)
(2-methylhexanoic acid)
(d) (3-hexen-5-one)
Solution: a, b, c
41. The IUPAC name of
(a) 2,2-dimethylpent-4-ene (b) 2,2-dimethylhex-4-ene
(c) 4,4-dimethylpent-1-ene (d) hex-1-ene
Solution: c
42. In which of the following are all carbon atoms -hybridized?
(a) (b)
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(c) (d)
Solution: c
43. The hybridization of carbon atoms in the C-C single bond of is
(a) (b)
(c) (d)
Solution: c
44. Which of the following compound have only one type of hybrid carbon?
(a) (b)
(c) (d)
Solution: a, b, c
45. In the reaction , the hybridization state of the carbon atom changes from
(a) (b)
(c) (d)
Solution: a
46. Which of the following have zero dipole moment?
(a) (b) (c) (d)
Solution: a, c
47. Arrange the following resonating structures of vinyl c hloride in order of decreasing stability
(a) (b)
(c) (d)
Solution: a
48. Arrange the following resonating structures of formic acid in order of decreasing stability
(a) (b)
(c) (d)
Solution: b
49. Which of the following molecules show resonance?
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(a) CO (b) (c) NO (d)
Solution: a, b, c, d
50. Arrange the following free radicals in order of stability
(a) (b)
(c) (d)
Solution: a
51. Arrange the following free radicals in order of stability
Benzyl, a llyl, methyl, vinyl
I II III IV
(a) (b)
(c) (d)
Solution: b
52. Arrange the following carbonium ions in order of decreasing stability
(a) (b)
(c) (d)
Solution: c
53. Which of the following compounds will produce the most stable carbonium ion?
Solution: b
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
54. The bond that undergoes heterolytic cleavage most readily is
(a) C-C (b) C-O (c) C-H (d) O-H
Solution: d
55. Hydrogen bonding is maximum in
(a) trie thylamine (b) ethyl chloride
(c) ethyl al cohol (d) diethyl ether
Solution: c
56. Which of the following compounds will exhibit cis -trans isomerism?
(a) 2-butene (b) 2-butyne
(c) 1-butene (d) 2-butanol
Solution: a
57. Which of the fol lowing compounds will exhibit geometrical isomerism?
Solution: b
58. Which of the following compounds exhibit optical isomerism?
(a) (b)
(c) (d)
Solution: d
59.
The IUPAC name of this compound is
(a) 2,2,6-trimethyl-4-(1-methylpropyl) nonane
(b) 4,8,8-trimethyl-6-(1-methylpropyl) nonane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(c) 3,6-dime thyl-4-(methylene tertiary butyl) nonane
(d) 6,6-dimethyl-2-propyl-4-(1-methylpropyl) heptane
Solution: a
60.
The IUPAC name of this compound is
(a) 3-ethyl -4-chloro-1,4-pentadiene
(b) 2-chloro-3-ethyl-1,4-pentadiene
(c) 4-chloroethenyl-1-pentene
(d) 3-ethenyl-4-chloro-4-pentene
Solution: b
61.
The IUPAC name of this compound is
(a) 2-ethoxy-4-methoxypentan-3-one
(b) 2-methoxy-4-ethoxy-pentan-3-one
(c) 2-ethoxy-4-methoxy-pentan-3-one
(d) none of these
Solution: a
62. The IUPAC name of
(a) 2,3-dimethylpentanal (b) 3,4-dimethylpentanal
(c) 3,4,4-trimethylbutanal (d) 3-isopropylbutanal
Solution: b
63. The IUPAC name of
(a) 2-methyl -2,4-dihydroxypropane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(b) 2,2-dimethyl-4-hydroxybutanol
(c) 2-methyl -2,4-pentanediol
(d) 2-hydroxy-4,4-dimethylbutanol -4
Solution: c
64. The IUPAC name of
(a) 2-bromomethyl-3-oxohexanamide
(b) 1 -bromo-2-amido-3-oxohexane
(c) 1-bromo-2-amido-n-propylketone
(d) 3-bromo-2-propnylpropanamide
Solution: a
65. The IUPAC name of
(a) 2-ethyl-ethylacetate
(b) ethyl -3-methylbutanoate
(c) ethyl -2-methylbutanoate
(d) 2-methylbutanoic acid ethlyester
Solution: c
66. The IUPAC name of
(a) N-methyl-N-ethylamine
(b) diethylmethylamine
(c) N-ethyl-N-methylaminoethane
(d) methyldiethylamine
Solution: a
67.
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
The IUPAC name of this compound is
(a) 2-is opropylbutanal
(b) 2-ethyl-3-methylbutanal
(c) 3-ethyl-2-methylbutanal
(d)2-methylpentane-3-aldehyde
Solution: b
68. The IUPAC name of
(a) 1,1,1-trichloro-3,3-diphenylpropane
(b) 1,1-diphenyl-3,3,3-trichloropropane
(c) both (a) and (b)
(d) none of these
Solution: a
69. The IUPAC name of is
(a) cinammic acid
(b) 1 -phenyl-2-carboxyethene
(c) 3-phenylprop-2-enoic acid
(d) dihydroxy-3-phenylpropionoic acid
Solution: c
70. The IUPAC name of is
(a) 1-propyn-ethene (b) propeneacetylene
(c) pent-4-yne-1-ene (d) pent-1-en-4-yne
Solution: d
71. The IUPAC name of
(a) 1-cyclohexyl-3-methyl-1-pentene
(b) 3-methyl-5-cyclohexyl-pent-1-ene
(c) 1-cyclohexal-3-ethyl-but-1-ene
(d) 1-cyclohexyl-3,4-dimethyl-but-1-ene
Solution: a
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
72.
The IUPAC name of this compound is
(a) 3,3-dimethyl-2-pentanol
(b) 3-methyl -3-ethyl-2-butanol
(c) 3,3-dimethyl-3-ethyl-isopropanol
(d) 3,3-dimethyl-3-ethyl-2hydroxypropane
Solution: a
73.
The IUPAC name of this compound is
(a) 2-fluoro-4-chloro-2,4-diethylpentane
(b) 3-fluoro-5-chloro-3-methyl-5-ethylhexane
(c) 3-chloro-5-fluoro-3,5-dimethylheptane
(d) 3,5-dimethyl-5-fluoro-3-chloroheptane
Solution: c
74. The effect of decreases in the order
(a) (b)
(c) (d)
Solution: a
75. The +I effect of decreases in the order
(a) (b)
(c) (d)
Solution: a
76. The inductive effect of the a lkyl groups on a saturated carbon chain follows the order
(a)
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(b)
(c)
(d)
Solution: a
77. Give the IUPAC name of
(a) 4-is opropyl-5-ter. butyloctane
(b) 4-ter. butyl -5-isopropyloctane
(c) 2 -methyl-3-propyl-4-ter, buytlheptane
(d) 2,2-dimethyl-3-propyl-4-isopropylheptane
Solution: b
78. The IUPAC name of
(a) 4-ethyl -3-methyl-trans-3-heptane
(b) 4-ethyl-5-methyl-trans-4-heptane
(c) 3-ethyl-4-propyl-3-hexene
(d) 3 -propyl-4-ethyl-3-pentene
Solution: a
79. The IUPAC name of
(a) 5-chloro-3-penten-3-carbinol (b) 1-chloro-3-penten-3-carbinol
(c) 4-chloro-2-ethyl-2-buten-1-ol (d) 1-chloro-3-ethyl-2-buten-4-ol
Solution: c
80. The IUPAC name of
(a) metha crolein (b) metha cryaldehyde
(c) 2-methylpropenal (d) propenaldehyde
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
Solution: c
81. The IUPAC name of
(a) phenylethanone (b) methylphenylketone
(c) ace tophenone (d) phenylemethylketone
Solution:a
82. The IUPAC name of
(a) 5-ethy-1, 3, 5-heptatriyne (b) 3-ethyl-2, 4, 5-heptatriyne
(c) 5-ethenyl-1, 3-heptatriyne (d) 3-ethenyl-4, 6-heptatriyne
Solution: a
83. The IUPAC name of
(a) ela idic acid (b) trans-octadec-9-enoic acid
(c) dihydrosteric acid (d) olei c ac id
Solution: b
84. The IUPAC name of
(a) cis -cis -9, 12-octadecadienoic acid (b) cis -trans-9, 2- octadecadienoic acid
(c) 9,10 - octadecadienoic acid (d) 9,14 - octadecadienoic acid
Solution: a
85. The IUAC name of
(a) 6-(1-methylbutyl)-8-(2-methylbutyl) tetradecane
7/30/2019 22 Answers to Organic Class Sheet 1, 2 & 3
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
(b) 6-(2-methylbutyl)-8-(1-methylbutyl) tetradecane
(c) 4-methyl -5- -pentyl-7-(2-methylbutyl) tridecane
(d) 3-methyl -5- -hexyl-7-(1-methylbutyl) didecane
Solution: a
86. The IUPAC name of
(a) 4,4-di(formylmethyl) butanal
(b) 2-(formylmethal) butane-1, 4-dicarbandehyde
(c) hexane-3-acetal-1, 6-dial
(d) 3-(formylmethyl) hexane-1, 6-dial
Solution: d
87. The IUPAC name of
(a) 2-chlorocarbonyl ethylbenzoate (b) 2-carboxyethyl benzoayl chloride
(c) ethyl-2-(chlorocarbonyl) benzoate (d) ethyl-1-(chlorocarbonyl) benzoate
Solution: c
88. The IUPAC name of
(a) 2-chloroc arbonyl ethylbenzoate (b) 2-carbonxyethyl benzoyl chloride
(c) ethyl-2-(chlorocarbonyl) benzoate(d) ethyl-1-(chlorocarbonyl) benzoate
Solution: c
89. The IUPAC name of is
(a) phenyl cyanide (b) phenyl acetonitrile
(c) benzene cyanide (D) benzoni trile
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ANSWERS TO ORGANIC CLASS SHEETS 1, 2 & 3
EDUDIGM
Solution: d
90. The IUPAC name of is
(a) phenylethylamine (b) 2-phenyl aminoethane
(c) 2-phenylethanamine (d) benzyl methylamine
Solution: c
91. The IUPAC name of
(a) 2-(N-methylamino)-4-methypentane (b) N,4-dimethypentan-2-amine
(c) 2-(N-methylamino)-3-isopropylpropane
(d) 2-(N-methylamino)-1,4,4-trimethylbutane
Solution: b
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