Question

Q.3 Name the following:
1. The silvery residue obtained on heating mercury [II] oxide.
2. The gas evolved when a dilute acid is added to chalk ſlimestone].
3. Two non-metals which react explosively when brought in close contact.​

Answer 1

Explanation:

1.The silvery residue obtained on heating Mercury [II] oxide is Mercury (Hg).

2. Carbon dioxide.

3.sodium and potassium