1.  Function of ball bearing in a wheel is -

2.  Rocket acts on Law of conservation of-

3.  Weight of a free falling body is -

4.  Water drop cannot stick to the oily surface due to

5.  Why the rain drops acquired the spherical shape?

6.  A fountain pen works on the principle of-

7.  The part of transistor which is heavily doped to produce a large number of majority carriers is -

8.  Time period of Revolution for a Geo-stationary satellite is-

9.  What is the Height of a Geo-Stationary satellite from the surface of earth?

10.  Rice is cooked more quickly in a pressure cooker because -

11.  For a missile Launched with A velocity Less than the escape velocity of earth, the total energy is

12.  Cooking of Rice is Harder -

13.  What is the working principle of Rocket?

14.  What should a person on a freely rotating turn able to decrease his angular speed?

15.  Energy stored in a spring in watch -