Q. The part of the earth and thin layer of air above its surface, which support life on earth, are referred to as

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Q. The ridges of the waves are where the jet stream of waves closes to the

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Q. The rate at change of temperature is called

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Q. The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are the

I. filling of fine soil pores with water, which reduces capillary forces
II. moistened soil, clay particles to swell and reduce the size of pores
III. raindrop impact breaking up with soil clumps, splashing fine particles into pores

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Q. The process where the particle moves from the surface to the medium in quick, continuous, repeated cycles is called

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Q. The obscuring of one celestial body by another, particularly that of the sun or a planetary satellite

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Q. The river Sutlej, on which the Bhakra Dam has been built, originates from

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Q. The process of destruction or dying of fronts is called

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Q. The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.

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Q. The reaction is carbonate and bicarbonate ions with mineral is called

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Q. The plants grown in equatorial regions include

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Q. The process that may cause physical weathering or mechanical rupture are

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Q. The process of particle detach ment by moving glacial ice is called

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Q. The points in the ecliptic farthest north and south of the celestial equator are called

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Q. Which of the following is concerned with the description and mapping of the main features of the universe?

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Q. The process that creates the deep oceanic trenches is called

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Q. The rainfall in the peninsular interior averages about

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Q. The Palaeozoic era contains ____ time periods.

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Q. The northern portion of the western coastal plain is called

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Q. The ozone layer at high altitude contains

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