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प्रश्न
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar
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उत्तर
Acetic acid reacts with sodium hydrogen carbonate to form the salt sodium acetate and water with the evolution of CO2. This CO2 is a colourless, odourless gas. Thus, the student will observe bubbles of colourless and odourless gas.
The Correct Answer is C
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