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Practice Test 12

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a
b
c
d

Solution

– CN has highest priority. Further the sum of locants is 7 in (b)and 9 in (d)

Out of the following, the alkene that exhibits optical isomerism is

3-methyl-2-pentene
4-methyl-1-pentene
3-methyl-1-pentene
2-methyl-2-pentene

Solution

The number of stereoisomers possible for a compound of the molecular formula CH₃ – CH= CH – CH(OH) – Me is:

2
4
6
3

Solution

The alkene that exhibits geometrical isomerism is :

2- methyl propene
2-butene
2- methyl -2- butene
propene

Solution

The IUPAC name of neopentane is

2, 2 dimethylpropane
2 methylpropane
2, 2 dimethylbutane
2- methylbutane

Solution

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is

– COOH, – SO₃H, – CONH₂, – CHO
– SO₃H, – COOH,– CONH₂, – CHO
– CHO, –COOH, – SO₃H, –CONH₂
– CONH₂, – CHO, – SO₃H, – COOH

Solution

Presence of a nitro group in a benzene ring

deactivates the ring towards electrophilic substitution
activates the ring towards electrophilic substitution
renders the ring basic
deactivates the ring towards nucleophilic substitution.

Solution

Nitro group is electron withdrawing group, so it deactivates the ring towards electrophilic substitution.

3-ethyl-4, 4-dimethylheptane
1, 1-diethyl-2,2-dimethylpentane
4, 4-dimethyl-5,5-diethylpentane
5, 5-diethyl-4,4-dimethylpentane.

Solution

trans-2-chloro-3-iodo-2-pentene
cis-3-iodo-4-chloro-3-pentene
trans-3-iodo-4-chloro-3-pentene
cis-2-chloro-3-iodo-2-pentene

Solution

4-Ethyl-3-propylhex-1-ene
3-Ethyl-4-ethenyl heptane
3-Ethyl-4-propylhex-1-ene
3-(1-ethylpropyl) hex-1-ene

Solution

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Organic Chemistry : Some Basic Principles And Techniques

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