1.
Ball pen functions on the principle of :

2.
When a detergent is added to pure water, its surface tension

3.
Pieces of camphor placed on water move about rapidly. This is because of

4.
What is unit of Viscosity ?

5.
The hair of shaving brush clings together when removed from water due to

6.
A body falling through a liquid acquires a steady velocity is known as

7.
The spoon dropped by an astronaut in a satellite will

8.
An aircraft can perform aerobatic manoeuvres in a vertical loop because of

9.
Which one is not a part of Kepler's Law?

10.
Kepler's law of planetary motion states that the square of the time period is proportional to the