The total quantity of motion contained in a body is given by its
Why a hydrogen balloon rises ?
Because hydrogen is lighter than air,
Because hydrogen is endowed with the property of rising vertically upwards.
Because hydrogen is attracted by the moon.
Because hydrogen is attracted by the sun.
A stone, tied to a string, is being whirled round in a horizontal circle. The string suddenly breaks. What will be the motion of ther stone ?
The stone will continue to move in a circle fbr sometime.
The stone will fly off, in a straight line path, along the tangent.
The stone will immediately fall to the ground.
The stone will first move, along the radius of the circle, to the centre of the circle and finally drops to the ground.
What is the physital principle involved in skating ?
Action and reaction are equal and opposite.
Law of conservation of momentum.
Law of conservation of energy.
Law of conservation of mass.
Why does a ship made of steel float though a steel ball sinks
Because ship is propelled by an engine,.
In the case of ship. action and reaction are equal and opposite whereas in,case of ball action is greater than reaction.
The force of gravitation between the earth and the ship is ,enough to keep ship stable. In the case of ball, this force is so. small ~that the ball cannot be stable.
Because weight of water displaced by a ball is less than its own weight, while the weight of water displaced by a ship is greatm than its own weight.
A rocket works on the principle of
Conservation of mass.
conservation of momentum.
conservation of energy.
conservation of charge.
A vector quantity is that which has
both magnitude and direction.
neither magnitude nor direction.
How does the Pouring of kerosene oil on stagnant water help to eradicate malaria ?
Kerosene oil kills ffies.
The smell of kerosene oil keeps away mosquitoes.
Kerosene oil poisons the water.
Kerosene oil spreads on the surface of water and forms a fine layer. Thus, mosquitoes cannot lay their eggs on water.
Why sand is provided for high jumpers to fall on in place of hard ground
Because sand is cooler than the hard ground.
Because sand is hotter than the hard ground.
Because the jumper can penetrate some distance before commg to rest.
Because of none of these.
Why a person leans forward when climbing a hill
Because, when a person bends forward, the line passing through the c6tre of gravity of the person does not lie within his feet. Therefore, the equilibrium is stable and the person can climb easily.
Because, when a person leans f6rward, the line passing through the centre of gravity of the person lies within his feet. Therefore, the equilibrium is stable and the person can climb easily.
Because, when a person leans forward, the force of friction between his feet and the ground is reduced. Therefore, the chances of slipping are considerably reduced.
None of these.
1. World Geography -Test-01
2. World Geography -Test-02
3. World Geography -Test-03
4. Geography of India -Test-01
5. Geography of India -Test-02
6. Geography of India -Test-03
7. Geography of India -Test-04
8. Geography of India -Test-05
9. History of India - Test - 01
10. History of India - Test - 02
11. History of India - Test - 03
12. History of India - Test - 04
13. History of India - Test - 05
14. History of India - Test - 06
15. History of India - Test - 07
Myth about Alien
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What to Eat in Tamil Nadu
Ground meat or vegetable croquettes bound together by spices and/or eggs served alone or in savoury gravy. Koftas are usually softer than boras which are mainly made of ground lentils, sometimes with added chopped vegetables. Telebhaja is different.