TNPSC Questions in English

Chemistry Questions and Answers

General Science

165.	Aluminium oxide is a/an
	A. acidic oxide B. basic oxide C. neutral oxide D. amphoteric oxide

166.	Soda water is a solution of
	A. liquid in gas B. gas in liquid C. solid in solid D. solid in water

167.	In mirrors the back surface is cotted with a thin layer of
	A. silver B. mercury C. red oxide D. silver nitrate

168.	Charcoal is
	A. amorphous B. crystalline C. hygroscopic D. none of these