1.Who propounded the universal law of graviation?
2.The tendency of a liquid drop to contract and occupy minimum area is due to
3.Astronauts in space cannot stand erect. This is because, in space
4.The rain drops are spherical because
5.Who gave the theroy of gravity?
6.Oil spreads on water surface because
7.If an apple is released from an orbiting spacehip, it will
8.Kerosene oil floats on water because
9.If an object is falling from abvoe, its weight remains
10.Pressure inside a soap bubble is
11.The weight of human body is
12.If two bubbles of soap of diferent diameter come in contact with a tube, then what will happen?
13.Weightlessness is
14.For Which one of the following capillarity is not the only reason?
15.If the gravitational force of the Earth suddenly disappears, which are of the following will be the dorrect consequence?
16.With the rise of temperature, the visocity of liquid
17.An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth.
18.Kerosene rises in the wock of the stove is due to
19.A Geosynchronous satelite continuously active in its orbit due to centrifugal force which is obtained by
20.In a capillary tube a fluid rises more as compared to water, it is due to
21.Satellite is kept movie in its orbit around the Earth; it is due to
22.When an air bubble at the bottom of lake rises to the top, it will
23.If a person sitting in a lift, then when will he feel that his weight gets increased?
24.While travelling by plane, the ikn of the pen starts to come out
25.The time period of a pendulum
26.In automobile hydraulic brakes work on
27.Why do pendulum checks usually lose time in summer?
28.A sudden fall in barometer rading indicates that the weather will be
29.A girl is swinging on a swing in sitting position. When the girl stands up, the period of the swing will
30.The surface of a lake is frozen in severe wither, but the water at its bottom is still liquid. Why?
31.A pendulum clock can run faster in
32.In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because.
33.Earth's escape velocity is
34.Fish can survive in a frozen lake because
35.What will happen if an object is thrown into space with the speed of 8 km/s.
36.the density of water will reach its maximum value at the temperature of
37.At which temperature density of water is maximum?
38.Why does an iron nail float on mercury while it sinks in water?
39.A needle sinks in water wheras a ship made of iron floats on it because
40.While lifting a bucket of water from a well, we feel that the bucket
41.The separation of cream from milk by churning is due to
42.The clouds float in the atmosphere because of their low
43.Which of the following elements was fist produced artificially?
44.An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It
45.A body floats at 4C water. If temperature reaches 100C, then
46.Why it is easier to swim in the sea than in a river?
47.When a ship enters a sea from a river, what happens?