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Pick out the correct statements from the following and choose the correct the answer from the codes given below
1. Hexa 1,5- diene is a conjugated diene
2. Prop-1,2- diene is conjugated diene
3. Hexa-1 3-diene is a conjugated diene
4. Buta-1 3- diene is an isolated diene
5. Prop-1,2- diene is a cumulative diene

A

a) 1,2

B

b) 2,3

C

c) 3,5

D

d) 2,5

Text Solution

Verified by Experts

The correct Answer is:
D
In Conjugated diene alternate single and double bonds are present while in cumulative diene, double bonds are present an adjacent positions.
`H_2overset1C=overset2CHoverset3CH_2overset4CH_2overset5CH=overset6CH_2=` It is an isolated diene.
`H_2overset1C=overset2C=overset3CH_2 implies` It is a cumulative diene. prop-1,2-diene
`H_2overset1C=overset2CH-overset3CH=overset4CHoverset5 CH_2 overset6 CH_3 implies` hexa-1,3-diene
`H_2overset1C=overset2CH-overset3CH=overset4CH_2 implies` It is a conjugated diene. buta-1,3-diene
5.Prop-1,2-diene is a cumulative diene.
Hence, statements 3 and 5 are correct.
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