Explain the term 'dry ice'. State its application. Give three reasons why carbon dioxide finds application in fire extinguishers.

State how carbon monoxide finds application in The metallurgy of iron

Define the term 'allotropy'. Give a reason why carbon exhibits allotropy,

Give a reason why carbon dioxide and sulphur dioxide cannot be distinguished by using lime water.

Explain the term plasmolysis. Give one application of this phenomenon in our daily lives.

Explain the term Plasmolysis. Give one application of this phenomenon in our daily lives.

Give reasons for the following : Nitric acid finds application in the purification of gold.

Give reasons for the following: Lime water finds application for testing both carbon dioxide & carbon monoxide gas individually.

Explain the term symbol. State a reason why- the symbol of calcium is Ca and of copper is Cu.

A chemical reaction may b reversible in nature. State the meaning of the term in italics. Give a reason why a catalyst is used in certain chemical reactions. Give a balanced equation for the following - a. A reversible catalytic reaction involving- i. nitrogen as one of the reactants ii. Sulphur dioxide as one of the reactants.

Explain , giving three reasons, why tropics show greatest levels of species diversity.