Available Answers

1. 1.

   Match the following.

   Column A	Column B
   i. Upthrust	a. Movements of particles
   ii. Adhesive force	b. Atmospheric pressure
   iii. Surface tension	c. Buoyancy
   iv. Liquid pressure	d. Torricellian
   v. Common water pump	e. Increases with depth
   vi. Simple barometer	f. Concave meniscus
   vii. Convection	g. Cohesive force

    

2. 2.

   State whether the statements are true or false and correct the false statements.

   1. With increase in the depth of liquid, the pressure exerted by it increase.
   2. The atmospheric pressure remains uniform all through the 300 km span.
   3. Upthrust is the other name of buoyancy.
   4. For deep-sea diving any kind of swimming outfit may be worn.
   5. Liquids may flow from higher level to lower level or vice versa.
   6. The pressure of a liquid independent of its density.
   7. Soap solution has no effect on the surface tension of water.
3. 3.

   Correlate the following.
   Cohesion : Convex meniscus :: ________ : Concave meniscus
   Simple barometer : Torricellian vacuum :: __________ : Corrugated lid
   Solids : Vibrational energy :: Liquids : ____________
   Kinetic theory : Properties of matter :: __________ : Water pump

4. 4.

   Why does mercury not stick to the capillary tube of a thermometer?

5. 5.

   Why are gases are highly compressible?

6. 6.

   What is meant by term 'meniscus'?