SCIENCE TEST 13
Gobar gas contains mainly
1 point
The radiant energy of the sun is due to
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Ozone present in the ozone layer of the atmosphere is important because
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Total internal reflection can take place when light travels from:
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Most of the explosions in mines occur due to the mixing of
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Assertion (A) : Phenyl is used as a household germicide. Reason (R) : Phenyl is phenol derivative and phenol is an effective germicide.
1 point
Which one of the following is produced during the formation of photo chemical smog?
1 point
The nutritional deficiency condition that needs to be given top priority for remedial action in India today is
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Lathyrism is caused by excessive consumption of
1 point
The chief constituent of gobar gas is
1 point
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