You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Addition Reactions

Which of the ...

Question

Which of the following statment regarding D is correct?

It is a conjugated dience

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

It has three methyl groups

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D on treatment with HBr/RooR produces a pair enantiomers

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D on heating with conc.

H_{2} S O_{4}

will isomerizes into a conjugated diene

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A It is a conjugated dience
The compound D (2,3,4-trimethylpenta-1,3-diene) is conjugated diene. It has four methyl groups. On treatment with HBR/ROOR, it undergoes anti markovinikov rule and the product has 2 chiral centers and 2 pairs of enantiomers.
D is conjugated diene and on heating with conc. sulphuric acid will not isomerize.

Suggest Corrections

Similar questions

Q. Which one of the following is/are conjugated dienes ?
A.

Q. A hydrocarbon

A

(C_{5} H_{10})

on addition of

H B r

in presence of a peroxide forms

(C_{5} H_{11} B r)

B

which is found to be resolvable into enantiomers.

A

on addition of

H B r

in aqueous medium produces

C

which is an isomer of

B

but can't be resolved.

A

on reductive ozonolysis produced

(C_{4} H_{8} O)

D

as one product.

D

on catalytic reduction with

N a B H_{4}

produced E

(C_{4} H_{10} O)

which is resolvable.

E

on dehydration with concentrated sulphuric acid produced

F

(C_{4} H_{8})

which on ozonolysis followed by work-up with

Z n - H_{2} O

produced two molecules of ethanol. Identify

A

F

Q. A hydrocarbon with molecular formula

C_{6} H_{12}

has four isomeric alkenes

A - D

and all on hydrogenation yield the same methyl cyclopentane Also

C

is the only one that can be resolved into enantiomers The heat of hydrogenation of

A, B

and

D

are in the order of

B < D < A

. The heat liberated in the hydrogenation reaction. Identify

A

D

Q. Pick out the correct statement from the following and choose answer from the codes given below:
I. Prop - 1,2 - diene is conjugated diene II. Hexa - 1,3 - diene is conjugated diene
III. Buta - 1, 3 -diene is an isolated diene IV. Prop - 1,2 -diene is a cumulative diene

Q. An organic lactum A on acid hydrolysis produces B, an amino acid,.B on treatment with nitrous acid gives C. C on heating with concentrated

H_{2} S O_{4}

produces a lactone D. A can be synthesized by the reaction of cyclopentanone with hydroxylamine followed by treatment of product with concentrated

H_{2} S O_{4}

. Deduce structures of A to D.

Join BYJU'S Learning Program