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Instrument used to measure the force and velocity of the wind is
Which combination of colour the most convenient during day and night time ?
Woolen clothes keep the body warm because
While catching a ball, a player pulls down his hands to lower the
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?
Smog is a general pollutant where
In a refrigerator what produces the cooling ?
Why are we able to hear short wave broadcasts better than long wave broadcasts ?
Electrostatic precipitator is used to control the pollution of
When two ice cubes are pressed over each other they unite to form one cube, because of
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