Question

dry raisins are kept in dilute sugar solution

Answer 1

If dry rasins are kept in dilute sugar solution then the rasins swell. The concentration inside rasins is higher so by endosmosis it swells up.

Answer 2

Answer:

Dry raisins are kept in dilute sugar solution to allow them to swell.  

Explanation:

Raisins have a high concentration of sugar. When they dry, the concentration still remains high inside, just the skin of the raisins wrinkle and shrink. They can be allowed to swell when kept in dilute sugar solution by the process of endosmosis.

The water from the solution moves into the concentrated raisins and causes them to swell.