Question

why ether and ethnol kept at cool places

Answer 1

These are some of the reasons why ether and acetone are stored in cool places:
1. These liquids are highly volatile: This means that ether and acetone easily evaporate at normal room temperatures. Therefore, by keeping these liquids in cool temperatures evaporation is prevented.
2. These liquids are highly inflammable: It means that ether and acetone can easily catch fire or be set on fire. Storing them in a cool place only reduces the chances of fire break out.

Answer 2

This liquids are highly volatile and inflammable that's why Ether and ethanol kept at cool places.