Question

30. When citric acid is heated with fuming sulphuric acid it gives
(A) dicarboxylic acid
(B) monocarboxylic acid
(C) tricarboxylic acid
(D) none of these​

Answer 1

Answer:

dicarboxylic acid​

Explanation:

Answer 2

When citric acid is added with fuming sulphuric acid d is heated at 150oC it gives dicarboxylic acid

Explanation for Correct answer:

Option (A) dicarboxylic acid

When fuming sulphuric acid and citric acid is heated at 150 ºC, it gives acetone.

and the obtained  Acetone is a dicarboxylic acid.

$CH2COOH-C(OH)COOH-CH2COOH --------- CH2COOH-C=O-CH2COOH$

Citric acid which is used for the reaction is a tricarboxylic acid.

Explanation for incorrect answer:

Option (B) monocarboxylic acid is not the correct answer as

The product formed is a dicarboxylic acid

Option (C) tricarboxylic acid is not the correct answer as

The product formed is a dicarboxylic acid whereas citric acid is a tricarboxylic acid

Option (D) None of these