Question

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

Options

• ethanol

• vegetable oil

• vinegar

• soap solution

Answer 1

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

Explanation:

Baking soda (sodium bicarbonate, NaHCO₃) is a basic compound. It reacts with acids to undergo a neutralisation reaction, releasing carbon dioxide (CO₂) gas. Vinegar contains acetic acid (ethanoic acid), which reacts violently with baking soda to produce rapid gas bubbles, appearing as brisk effervescence.