Chemistry-Organic Preparations

NEET Chemistry Organic Preparations MCQ Question

Type: MCQ-conceptual-Hard-Class 12

Which of the following combinations correctly describe the reactions involved in organic preparations with iodide ions?

A

The addition of MnO2 produces violet vapors, and in the presence of chlorine water, a violet color appears in the organic layer.

B

Heating iodide with concentrated sulfuric acid results in a white precipitate, and the presence of iodide ions is confirmed by a yellow solution.

C

Iodide ions react with sodium carbonate to form a blue solution, and the addition of sulfuric acid yields a dense green gas.

D

Adding excess chlorine to a sodium iodide solution leads to a colorless solution, and heating produces a yellow precipitate.

Correct Answer

Option A

Detailed Explanation

The reaction of iodide ions with MnO2 produces dense violet vapors, and when chlorine water is added, the iodine dissolves in the organic layer, resulting in a violet coloration.

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