Q421
Open questionThe atmospheric air is held to the Earth by :
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Q422
Open questionThe pressure of a fluid varies with depth h as P = PQ+pgh, where p is the fluid density. This expression is associated with
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Q423
Open questionA parachute descends slowly whereas a stone dropped from the same height falls rapidly, because
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Q424
Open questionWhy does bleeding occur through the nose in high mountainous regions ?
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Q425
Open questionWhich of the following instruments is used to measure humidity ?
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Q426
Open questionAnemometer is an instrument meant for measuring ________
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Q427
Open questionA fountain pen works on the principle of
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Q428
Open questionA barometer is kept inside a bell jar. Air is slowly pumped out of the jar.
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Q429
Open questionThe temperature at which water boils depends mainly on
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Q430
Open questionAir pressure is measured in which of the following units?
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Q431
Open questionHydraulic machines work under the Principle of :
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Q432
Open questionAlcohol is more volatile than water because ________ is lower than water.
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Q433
Open questionA manometer is used to measure
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Q434
Open questionAnemometer is used to measure
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Q435
Open questionThe instrument used to measure the speed of the wind is
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Q436
Open questionThe sudden fall of atmospheric pressure indicates
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Q437
Open questionHydraulic brakes in automobile work on
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Q438
Open questionWhen the barometer reading dips suddenly, it is an indication of
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Q439
Open questionA storm is predicted if atmospheric pressure
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Q440
Open questionOn which principle does the hydraulic lift works?
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