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Q.

The substance which can produce brisk effervescence with baking soda solution is

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a

Vinegar

b

Soap solution

c

Ethanol

d

Vegetable oil

answer is C.

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Detailed Solution

Vinegar (aqueous solution of acetic acid) reacts with baking soda to produce brisk effervescence of  CO2 in the following way.

CH3COOH(aq)+NaHCO3(s)CH3COONa(aq)+H2O(l)+CO2(g)

Brisk effervescence: Rapid escaping of  CO2 gas from the liquid or solid surface is called brisk effervescence. 

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