The heart of human embryo starts beating
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The colour of an opaque object is due to the colour it
The colour of an opaque object is due to the colour it
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The acceleration due to gravity of a catastrophic earthquake will be
The acceleration due to gravity of a catastrophic earthquake will be
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The speed of light will be minimum while passing through
The speed of light will be minimum while passing through
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A corked bottle full of water when frozen will break because
A corked bottle full of water when frozen will break because
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The half-life of a radio active element is 5 years. The fraction of the radioactive substance that remains after 20 years is
The half-life of a radio active element is 5 years. The fraction of the radioactive substance that remains after 20 years is
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Which one of the following combinations of aperture and shutter speed of a camera will allow the maximum exposure
Which one of the following combinations of aperture and shutter speed of a camera will allow the maximum exposure ?
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If a gas is compressed to half of its original volume at 27°C, to what temperature should it be heated to make it occupy its original volume
If a gas is compressed to half of its original volume at 27°C, to what temperature should it be heated to make it occupy its original volume ?
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One mole of hydrogen gas burns in excess of oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of hydrogen gas is burnt under the same conditions
One mole of hydrogen gas burns in excess of oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of hydrogen gas is burnt under the same conditions ?