EASY
10th CBSE
IMPORTANT
Earn 100

A metal with shining appearance reacts with hot water and also with dilute hydrochloric acid evolving hydrogen gas. Suggest giving a reason why this metal cannot be copper.

Important Questions on Metals and Nonmetals
MEDIUM
10th CBSE
IMPORTANT
Name the metal that combines slowly with cold water but at the higher temperature, the reaction is fast. Write balanced chemical equations to represent the two reactions.

EASY
10th CBSE
IMPORTANT
What will happen if a solution of copper sulphate is stored in a vessel made of iron?

EASY
10th CBSE
IMPORTANT
Gold can be hammered into sheets. Therefore, it is _____. (malleable/ductile)

EASY
10th CBSE
IMPORTANT
Is rusting of iron a physical or chemical change?

EASY
10th CBSE
IMPORTANT
Does rusting represent oxidation or reduction of iron?

EASY
10th CBSE
IMPORTANT
Name the conditions which are necessary to cause rusting of iron.

EASY
10th CBSE
IMPORTANT
Rusting of iron does not occur in the absence of any one of air and moisture.

MEDIUM
10th CBSE
IMPORTANT
Name any two methods, which are employed to protect iron objects from rusting.
