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Chemistry
Atmospheric pollution
How is scrubber used? Give its advantages.

Chemistry
Atmospheric pollution
Explain the difference between contaminant and pollutant?

Biology
Atmospheric pollution
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is or are
A. Suspended particulate matter (SPM)
B. Oxides of sulphur
C. Carbon dioxide and carbon monoxide
D. Oxides of nitrogen
Chemistry
Atmospheric pollution
The higher concentration of which gas in air can cause stiffness of flower buds?
(A) $S{{O}_{2}}$
(B) $N{{O}_{2}}$
(C) $C{{O}_{2}}$
(D) CO


Biology
Atmospheric pollution
Primary constituents of photochemical smog are
a. Sulphur dioxide and carbon monoxide
b. Carbon dioxide and nitrous oxide
c. Nitrous oxide and hydrocarbons
d. Hydrocarbons and CFCs
Chemistry
Atmospheric pollution
Assertion (A): The temperature in the stratosphere increases with altitude.
Reason (R): Ozone present absorbs ultraviolet radiation which is converted into heat.
Choose the correct option from the following:
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true but Reason is not correct explanation of Assertion
C. Assertion is true and Reason is false
D. Assertion is false and Reason is true

Biology
Atmospheric pollution
Photochemical smog does not contain________
a. PAN
b. Ozone
c. Nitrogen dioxide
d. $S{O_2}$
Chemistry
Atmospheric pollution
Match the List I and II and pick the correct matching from the codes given below.

List IList II
i. Peroxyacetyl nitrate1. Carcinogens
ii. Polycyclic aromatic hydrocarbons2. Global warming
iii. IR active molecules3. Photochemical smog
iv. Dioxins4. Waste incineration

[A] (i)-3, (ii)-1, (iii)-4, (iv)-2
[B] (i)-3, (ii)-2, (iii)-4, (iv)-1
[C] (i)-3, (ii)-1, (iii)-2, (iv)-4
[D] (i)-4, (ii)-2, (iii)-1, (iv)-3
Chemistry
Atmospheric pollution
A biosphere is composed of:
(A) Living organisms
(B) Living organisms + lithosphere
(C) Living organisms + lithosphere + atmosphere
(D) Living organisms + lithosphere + atmosphere + hydrosphere
Chemistry
Atmospheric pollution
A biosphere is composed of:
(A) Living organisms
(B) Living organisms + lithosphere
(C) Living organisms + lithosphere + atmosphere
(D) Living organisms + lithosphere + atmosphere + hydrosphere
Biology
Atmospheric pollution
Acid rain is caused due to which gas?
a. $N{O_3}$
b. $S{O_2}$
c. $S{O_3}$
d. $C{O_2}$
Biology
Atmospheric pollution
Ozone layer is located in
A. Troposphere
B. Hydrosphere
C. Stratosphere
D. Lithosphere
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