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Environmental Chemistry - Set 5
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NUST Entrance Test
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Chemistry
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Environmental Chemistry
Set 5
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Mashaal Masha
Nov 08, 2022
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Choose the correct options for the following questions.
Atmosphere absorbs:
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Difficulty: Easy
A:
Ultraviolet rays
B:
Cosmic rays
C:
Harmful electromagnetic rays
D:
All of these
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The gas essential for containing life is:
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Difficulty: Easy
A:
$O_{2}$
B:
$CO_{2}$
C:
$N_{2}$
D:
Ar
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