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Question

Which of these is an acid-base reaction and releases a gas that turns lime water milky?


A

CaSO4 + HCl

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B

CH3COOH + HCl

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C

NaHCO3 + HCl

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D

NaOH + HCl

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Solution

The correct option is C

NaHCO3 + HCl


NaHCO3 is basic and reacts with acid to form salt, water, and carbon dioxide. Carbon dioxide turns lime water milky.


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