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NUST Entrance Test
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Chemistry
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Environmental Chemistry
Set 8
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Mashaal Masha
Nov 08, 2022
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Choose the correct options for the following questions.
The residence time of NO and $NO_{2}$ in atmosphere are representative in days:
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Difficulty: Easy
A:
Two and three
B:
Three and two
C:
Three and four
D:
Four and three
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The percentage of $SO_{2}$ produced by volcano is:
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Difficulty: Easy
A:
47%
B:
57%
C:
67%
D:
77%
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Environmental Chemistry - Set 8