Question

Name the following
Metal  which  forms  an  amphoteric  oxide.
An Alloy of Copper and Zinc
A compound which is added to lower the fusion temperature of an electrolytic bath in extraction of aluminium
A metal which does not react with cold water but reacts with stream
A common ore of aluminium

MSCERT Class 10 General Science Ch8 Understanding Metals and Non Metals

Answer 1

Ans 1) Aluminum

Ans 2) Brass.

Ans 3) Cryolite

Ans 4) Aluminum

Ans 5) Bauxite.

Answer 2

Aluminum
Brass.
Cryolyte
Aluminum
 Bauxite.