Buy Environmental Chemistry Essay

Buy Environmental Chemistry Essay
Buy Environmental Chemistry Essay
1. Which of the following gas composition
is wrong?
(a) 78% nitrogen
(b) 21% oxygen
(c) 0.03-0.05% CO2
, argon
(d) None of the above
2. Ozone layer is present in
[SSC 2020, 2016 SSC CGL 2016]
(a) troposphere (b) lonosphere
(c) stratosphere (d) exosphere
3. Ozone layer of upper atmosphere is
being destroyed by which of the
following? [UPRO/ARO (Mains) 2017]
(a) Sulphur dioxide
(b) Photochemical oxidants
(c) Chlorofluorocarbons
(d) Smog
4. Which region of atmosphere has human
beings alongwith other organism?
(a) Stratosphere (b) Troposphere
(c) Hydrosphere (d) Mesosphere
5. The gaseous envelope around the
earth is known as atmosphere. The
lowest layer of this is extended upto 10
km from sea level, this layer is
(a) stratosphere (b) troposphere
(c) mesosphere (d) hydrosphere
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6. Consider the following assertion and
reason and select the correct answer
from the codes given below.
Assertion (A) Ozone kills microorganism in water.
Reason (R) Ozone is not radioactive.
Codes [UPPSC (Mains) 2013]
(a) Both A and R are true and R is the
correct explanation of A
(b) Both A and R are true, but R is not the
correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
7. Primary pollutants can be
(a) SO ,CO 2
(b) PAN,O3
(c) Both of these (d) None of these
8. Secondary pollutants can be
(a) PAN (b) O3
(c) Cl (d) All of these
9. Which of the following is an inorganic
gaseous pollutant of air?
[RAS/RTS (Pre) 2013]
(a) Phosgene
(b) Hydrogen cyanide
(c) Hydrogen sulphide
(d) Methane
10. Air pollution is caused by smoke.
Which of the following types of coal
produces no smoke on burning?
(a) Peat (b) Lignite
(c) Bituminous (d) Anthracite
11. Which one of the following is not
included in the National Air Quality
Index? [CDS 2017]
(a) Sulphur (b) Nitrogen dioxide
(c) Lead (d) Methane
12. The term ‘brown air’ is used for
(a) Acid fumes [SSC CGL 2015]
(b) Photochemical smog
(c) Sulphurous smog
(d) Industrial smog
13. Smog is essentially caused by the
atmospheric presence of
[UPPSC (Pre) 2019]
(a) Oxygen and ozone
(b) Ozone and nitrogen
(c) Oxygen and nitrogen
(d) Oxide of nitrogen and sulphur
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14. Which is not the constituents of photo
chemical smog?
(a) RCHO (b) RCOR
(c) PAN (d) CF Cl 2 2
15. Smog can be controlled by
(a) use of catalytic converters in
automobiles.
(b) setting the air-fuel ratio in engine in a
such away to produce some CO and
unburned hydrocarbons.
(c) Both of the above
(d) None of the above
16. Photo chemical smog is a resultant of
the reaction among [SSC CGL 2015]
(a) High concentration of NO2
, O3
and
CO in the evening.
(b) CO, CO2
and NO2
at low
temperature.
(c) CO, O2
and peroxy acetyl nitrate in
the presence of Sunlight.
(d) NO2
, O3
and peroxy acetyl nitrate in
the presence of Sunlight.
17. Which one of the following is a cause of
acid rains?
(a) Ozone (b) Ammonia
(c) Sulphur dioxide
(d) Carbon monoxide
18. Acid rain is specified when pH is
(a) below 7 (b) below 5.6
(c) above 7 (d) above 9
19. Acid rain can be reduced by use of
(a) LPG (b) CNG
(c) Both of these (d) None of these
20. Which reaction is not a part of Acid-rain?
(a) CO H O H CO 2 2 2 3 →
(b) SO H O H SO 3 2 2 4 →
(c) NO O H O HNO 2 2 2 3
→
(d) ClONO H O HOCI HNO 2 2 3
→
21. Acid rain is caused due to pollution of
atmosphere by [SSC 2016]
(a) oxides of carbon and nitrogen
(b) oxides of nitrogen and sulphur
(c) oxides of nitrogen and phosphorous
(d) None of the above
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