Physics-
General
Easy
Question
A man throws a ball vertically upward and it rises through 
and returns to his hands. What was the initial velocity (
) of the ball and for how much time (
) it remained in the air 
,
- ,
, - ,
, , , , The correct answer is: ,
and 
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A balloon rises from rest with a constant acceleration 
. A stone is released from it when it has risen to height 
. The time taken by the stone to reach the ground is
A balloon rises from rest with a constant acceleration . A stone is released from it when it has risen to height . The time taken by the stone to reach the ground is
Physics-General
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Two cars 
are moving with same speed of 
along same direction. If a third car 
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The wind appears to blow from the north to a man moving in the north-east direction. When he doubles his velocity the wind appears to move in the direction 
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Physics-General
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A man throws balls with the same speed vertically upwards one after the other at an interval of two seconds. What should be the speed of the throw so that more than two balls are in the sky at any time (Given 
)
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Physics-General
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The displacement- time graph for two particles 
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Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed along the track so that the relative velocities of the trains with respect to the wind are in the ratio 
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Physics-General
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Look at the graphs [a] to [d] carefully and indicate which of these possibly represents one dimensional motion of a particle
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Physics-General
Chemistry-
Physical adsorption
Physical adsorption
Chemistry-General
Chemistry-
Adsorption is multilayer in the case of
Adsorption is multilayer in the case of
Chemistry-General
Chemistry-
In physical adsorption, the gas molecules are held on solid surface by
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Chemistry-General
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When the temperature is lowered and pressure is raised, the adsorption of a gas on a solid
When the temperature is lowered and pressure is raised, the adsorption of a gas on a solid
Chemistry-General
Chemistry-
Point out the wrong statement :Physical adsorption is characterised by
Point out the wrong statement :Physical adsorption is characterised by
Chemistry-General
Chemistry-
A solid acts as an adsorbent because it has
A solid acts as an adsorbent because it has
Chemistry-General
