Available Answers

1. 1.

   Gases have no definite shape or volume and are highly compressible. Give reasons.

2. 2.

   Gases exert equal uniform pressure on the walls of the container. Give reasons.

3. 3.

   Gases have much lower densities compared to solids and liquids. Give reasons.

4. 4.

   Gases diffuse readily when kept in contact with other gases. Give reasons.

5. 5.

   Complete the table given below pertaining to gas laws by selecting the correct word or representation in each case.

   1. Boyle's Law states that temperature remaining constant the volume of a given mass of dry gas is ______________ proportional to it's pressure.	a] directly b] inversely
   2. Charle's Law states that pressure remaining constant the volume of a given mass of dry gas is ______________ proportional to it's absolute temperature.	a] directly b] inversely
   3. The gas equation gives a simultaneous effect of changes of temperature and pressure on the volume of a given mass of a dry gas. The gas equation is represented as ______________.	a] PT/V=K  b] PV/T=K [K is a constant]

    

6. 6.

   

   The diagram given above represents a gas enclosed in a cylinder with a movable piston.

   What is the effect on the volume of the gas if the following conditions are maintained.

   Condition	Change in volume
   1. Pressure is halved, temperature remains constant.
   2. Pressure is doubled, temperature remains constant.
   3. Temperature of the gas is doubled, pressure remains constant.
   4. Temperature of the gas is halved, pressure remains constant.
   5. Temperature of the gas is halved, and pressure is doubled.