Available Answers

1. 1.

   State the meaning of the terms-

   1. air
   2. atmosphere.
2. 2.

   Name the important scientists & their studies which led to the discovery of the components of air.

3. 3.

   Explain Lavoisier's experiment which led to the discovery of the components of air.

4. 4.

   Tabulate the various components of the air,including the components with variable composition.

5. 5.

   Compare the main components of air, i.e. nitrogen, oxygen & carbon dioxide with reference to their density & solubility, nature & reactivity.

6. 6.

   Of the total volume of air - 4/5^th is nitrogen. State the utility or consequence of this ratio.