When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

A. Hydrogen

B. Oxygen

C. Carbon dioxide

D. All of them

Answer: Option C

Solution(By Examveda Team)

When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) reacting with a base (sodium bicarbonate, more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.