Question

ethers are used as solvents explain​

Answer 1

Diethyl ether is an Aprotic solvent. Which is very usefull at dissolving other Non-polar substances,including many organic hydrocarbons. On the other hand, Water and Diethyl ether are Unmixable.

That ether can be used to extract organic compounds from water

Answer 2

Diethyl ether is an especially good solvent for the formation of Grignard reagents for two reasons. The Grignard carbon is highly basic and reacts with the acidic protons of polar solvents like water to form an alkane. Ether has no acidic protons, so Grignard reagents are stable in ether.