Question

name a liquid whose mass density less than that of water but it is optically denser than water

Answer 1

As per the given question the answer will be kerosene.

Kerosene is the liquid which has a mass density less than that of water.

But kerosene is optically denser when compared to that of water.

Kerosene is also called as paraffin, coal oil, lamp oil.

All these are extracted from petrol.

So the answer to the given question is undoubtedly Kerosene.

Answer 2

Answer:

kerosene .....is the answer