Question Index
Browse public questions. Click a title to view (full view requires login).
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Cryogenics is the science dealing with -
Cryogenics is the science dealing with -
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Why does a fan give comfort in hot weather?
Why does a fan give comfort in hot weather?
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Bats detect prey at night by emitting -
Bats detect prey at night by emitting -
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Longitudinal waves cannot travel through -
Longitudinal waves cannot travel through -
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Which animal uses sound as its 'eyes'?
Which animal uses sound as its 'eyes'?
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The order of colours in a rainbow is -
The order of colours in a rainbow is -
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An object which absorbs all colours and reflects none appears -
An object which absorbs all colours and reflects none appears -
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SONAR is frequently used by -
SONAR is frequently used by -
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Echo is produced due to -
Echo is produced due to -
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Which mirror is used for shaving?
Which mirror is used for shaving?
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Which mirror is used for rear-view in vehicles?
Which mirror is used for rear-view in vehicles?
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Why is red light used as danger indicator?
Why is red light used as danger indicator?
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Which waves are used in night vision camera?
Which waves are used in night vision camera?
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The phenomenon of light splitting into seven colours through prism is -
The phenomenon of light splitting into seven colours through prism is -
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Who measured the velocity of light first?
Who measured the velocity of light first?
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An air bubble in water acts like a -
An air bubble in water acts like a -
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Which type of mirror is used by dentists to see large images of teeth?
Which type of mirror is used by dentists to see large images of teeth?
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The metal used in domestic electric cables is -
The metal used in domestic electric cables is -
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The unit of electrical power is -
The unit of electrical power is -
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The basic instrument employed to detect current is -
The basic instrument employed to detect current is -