Chemistry-Organic Preparations
NEET Chemistry Organic Preparations MCQ Question
Type: MCQ-diagram based-Medium-Class 12
A test tube contains 0.1 g of salt and a pinch of manganese dioxide, to which 3-4 drops of concentrated sulfuric acid are added. The mixture is heated, and a gas is evolved that has a greenish-yellow color. What is this gas?
A
Chlorine
B
Oxygen
C
Sulfur dioxide
D
Iodine
Correct Answer
Option A
Detailed Explanation
When manganese dioxide and concentrated sulfuric acid are added to a salt, greenish-yellow chlorine gas is evolved, which can be identified by its pungent odor and bleaching action.
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