Basic General Knowledge
Missile 'prithivi' aims

to hit target without the help of the Air Forces
to defend a large installations like oil-fields etc. against enemy attacks
to test the performance of an indigenously built heat-shield
None of these

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Basic General Knowledge
Primary rainbow is formed when light suffers

no internal refraction
two internal refractions before emerging out of the drop
either one or two internal refractions before emerging out of the drop
one internal refractions before emerging out of the drop

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