MM
Mashaal Masha
Nov 08, 2022
Table of Contents
Choose the correct options for the following questions.
What is the major reason for $\rm{SO_{2}}$ emissions?
Difficulty: Easy
A:
Agriculture
B:
Volcanic eruptions
C:
Fuel combustion
D:
All of the above
Which of the following gas has the least concentration in air
Difficulty: Easy
A:
$\rm{O_{2}}$
B:
$\rm{H_{2}}$
C:
$\rm{He}$
D:
$\rm{CO_{2}}$
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