Showing posts from August, 2021Show All
1) A boat which has speed of 5 km / h in still water across a river of width of 1km along the shortest path in 15 minutes . The velocity of river in km / s is : -

1) A boat which has speed of 5 km / h in still water across a river of width of 1km along the shortest path in 15 minutes . The velocity of river in km / s is : -

velocity - August 31, 2021
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The focal length of objective and eye piece of microscope is 2 cm and 5 cm . And the distance between the lenses is 20 cm . The distance of object from the objective , when the focal image seen by eye is 25 cm from eye piece . So what will be the magnifying power ?

The focal length of objective and eye piece of microscope is 2 cm and 5 cm . And the distance between the lenses is 20 cm . The distance of object from the objective , when the focal image seen by eye is 25 cm from eye piece . So what will be the magnifying power ?

Lenses - August 31, 2021
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The molarity of a 0.2 N Na2CO3 solution will be : - A ) 0.1 M , B ) 0.2 M , C ) 0.3 M , D ) None of these ,

The molarity of a 0.2 N Na2CO3 solution will be : - A ) 0.1 M , B ) 0.2 M , C ) 0.3 M , D ) None of these ,

Stoichiometry - August 31, 2021
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At the height of 80 m , an aeroplane is moving with 150 m / s . A bomb is dropped from it so as to hit a target . At what distance from the target should the bomb be dropped ? ( g = 10 m / s ) .

At the height of 80 m , an aeroplane is moving with 150 m / s . A bomb is dropped from it so as to hit a target . At what distance from the target should the bomb be dropped ? ( g = 10 m / s ) .

Physics - August 29, 2021
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Chemistry quiz 6

Chemistry quiz 6

Qz - August 17, 2021
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Atomic radii . . . . . . . . . . . . . . . of periodic table . A ) increases from left to right and decreases from top to down , B ) decreases from left to right and increases from top to down , C ) increases from left to right and increases from top to down , D ) None of these ,

Atomic radii . . . . . . . . . . . . . . . of periodic table . A ) increases from left to right and decreases from top to down , B ) decreases from left to right and increases from top to down , C ) increases from left to right and increases from top to down , D ) None of these ,

Chemistry - August 17, 2021
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Air at sea level is dense . This is a practical application of . . . . . . . . . , A ) Charle's law . B ) Dalton's law . C ) Boyle's law . D ) None of these ,

Air at sea level is dense . This is a practical application of . . . . . . . . . , A ) Charle's law . B ) Dalton's law . C ) Boyle's law . D ) None of these ,

Chemistry - August 17, 2021
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A gas approaches ideal gas behavior at . . . . . . . . . . . . : - A ) low temperature and high pressure , B ) high temperature and low pressure , C ) high temperature and high pressure , D ) None of these ,

A gas approaches ideal gas behavior at . . . . . . . . . . . . : - A ) low temperature and high pressure , B ) high temperature and low pressure , C ) high temperature and high pressure , D ) None of these ,

Chemistry - August 17, 2021
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Physics quiz 13

Physics quiz 13

Qz - August 16, 2021
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In bringing an electron toward another electron , electrostatic potential energy of system : - A ) increase , B ) decrease , C ) remain same , D ) None of these ,

In bringing an electron toward another electron , electrostatic potential energy of system : - A ) increase , B ) decrease , C ) remain same , D ) None of these ,

current - August 16, 2021
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