Explain giving reason
` CO_2`is a gas while silica is a solid.

Explain the following giving reason why HNO_3 can act as oxidising agent only while HNO_2 can act as both oxidising and reducing agent .

Give reasons :- A wooden table should be called a solid.

Explain giving reasons Sn^(2+) and Fe^(3+) cannot coexist in the same solution.

Account for the following: Dioxygen is a gas but sulpher is a solid.

Explain the following Adsoption of a gas on surface solid is generally accompanied by decrease in entropy, still it is spontaneous process.

Explain how CO_2 is able to control fires.

Explain ionic solids are hard and brittle.

Explain: The lowest oxidation state of manganese is basic while highest is acidic.

Give two reasons to justify- an iron almirah is a solid at room temperature.