Chemistry MCQS for Class 10
Which gas is in involved in ozone depletion?
CFC’s
Chlorine
All of them
Nitrogen
Ozone is formed in:
Troposphere
Stratosphere
Thermosphere
Mesosphere
High concentration of which metal clogs the fish gills.
Sodium
Copper
Zinc
Aluminium
The Earth’s atmosphere is getting hotter because of.
Increasing concentration of SO2
Increasing concentration of CO2
Increasing concentration of O3
Increasing concentration of CO
Normaily rain water is weakly acidic because.
CO3
SO3
CO2
NO2
Which gas is responsible in warming the atmosphere?
Fluorine
Hydrogen
Nitrogen
Helium
Depending upon temperature variation, atmosphere ins divided into how many regions?
2
1
3
4
75% atmosphere mass lies in how many kilometers.
11 km
85 km
30 km
50 km
What gas is the major constituent of troposphere?
Nitrogen
Both a and b
Oxygen
Hydrogen
Which gas is emitted due to volcanic eruption?
CO2
NO2
SO3
H2
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