The name of the gas used to artificially ripen raw fruits is-

Correct answers: (b) Acetylene or (d) Ethylene

Explanation

Ethylene is the natural ripening hormone of fruits and is used to ripen them in chambers. Acetylene, given off when calcium carbide meets moisture, has also been widely used.

Both answer the question; ripening with calcium carbide is now banned in India because it is harmful.