The metal which is soft and can be cut with knife is
Mercury
Sodium
Iron
Copper
B.
Sodium
The metal which reacts with water only when it is red hot and steam is passed over it, is
Iron
Calcium
Sodium
Magnesium
A.
Iron
The metal which is not corroded by air, water and acids is
Copper
Zinc
Aluminium
Gold
D.
Gold