What happens on hydrolysis of sucrose? 

One glucose and fructose is formed 

The correct answer is option 1. One glucose and fructose is formed.

On hydrolysis of sucrose, the correct option is One glucose and one fructose are formed.

Sucrose is a disaccharide composed of one molecule of glucose and one molecule of fructose linked together. Hydrolysis of sucrose involves breaking this glycosidic bond by the addition of water, resulting in the formation of one molecule of glucose and one molecule of fructose. The chemical equation for the hydrolysis of sucrose is:

\[ \text{Sucrose} + \text{Water} \rightarrow \text{Glucose} + \text{Fructose} \]

Therefore, the products of sucrose hydrolysis are one molecule of glucose and one molecule of fructose.