What is the name given to the reaction when an acid reacts with a base?

Neutralisation reaction

The correct answer is option 3. Neutralisation reaction

The effect of a base is nullified by an acid and vice-versa. The reaction taking place is written as–

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

The reaction between an acid and a base to give a salt and water is known as a neutralisation reaction.

In general, a neutralisation reaction can be written as – Base + Acid → Salt + Water