Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-fact-Hard-Class 12
What observation indicates the presence of carbonate ions when dilute sulfuric acid is added to a solid salt?
A
Evolution of a colorless gas causing lime water to turn milky
B
Formation of a brown-red precipitate with ferric chloride
C
Production of reddish brown fumes upon warming
D
Release of a rotten egg smell during reaction
Correct Answer
Option A
Detailed Explanation
The presence of carbonate ions is confirmed by the effervescence and the evolution of carbon dioxide gas, which turns lime water milky due to the formation of calcium carbonate.
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