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Byju's Answer

Standard XII

Chemistry

Preparation of Carboxylic Acids

A terpene has...

Question

A terpene has molecular formula $A (C_{10} H_{16} O)$ and it is a major constituent of lemongrass oil. $A$ on treatment with acidified $K M n O_{4}$ solution produces acetone, Oxalic acid and $C H_{3} C O C H_{2} C H_{2} C O O H .$ Also, $A$ does not give silver mirror test with Tollen's reagent. The correct deduction regarding $A$ is/are :

A

gives positive iodoform test

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A

has two stereoismers

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A

has one chiral carbon

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A

on treatment with

N H_{2} O H

gives six pair of diastereomers.

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Solution

The correct option is A $A$ gives positive iodoform test
The structure of the terpene $(A)$ is as shown. It has molecular formula $C_{10} H_{16} O$
$A$ on treatment with acidified $K M n O_{4}$
solution produces acetone $(C H_{3} C O C H_{3})$ , Oxalic acid $(H C O O H - C O O H)$ and
$C H_{3} C O C H_{2} C H_{2} C O O H .$
Also, $A$ does not give silver mirror test with Tollen's reagent as it does not contain an aldehyde group. $A$ gives positive iodoform test as it contains a methyl keto group. Hence, the option (A) is the correct answer.

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A terpene has molecular formula A(C10H16O) and it is a major constituent of lemongrass oil. A on treatment with acidified KMnO4 solution produces acetone, Oxalic acid and CH3COCH2CH2COOH. Also, A does not give silver mirror test with Tollen's reagent. The correct deduction regarding A is/are :