NCERT Solutions for class 11 Chemistry | Chapter 14 : Environmental Chemistry

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 Ozone layer that absorbs sun's ultraviolet radiation is present in _______layer of atmosphere.
A Thermosphere
B Mesosphere
C Stratosphere
D Troposphere

Answer:Stratosphere
2 The BOD value of clean water is
A < 5 ppm
B < 15 ppm
C > 15 ppm
D > 17 ppm

Answer:< 5 ppm
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
3 Choose the factor that is responsible for ozone layer depletion.
A CFCs
B CBrCs
C CH2Br2
D all are correct

Answer:CFCs
4 Select the major air pollutant
A CO
B mist
C Hydrogen sulphide
D all

Answer:all
5 Methane gas produces by_______ fields.
A Mustard field
B Paddy field
C Wheat field
D Groundnut field

Answer:Paddy field
6 Choose the compound that always present in photochemical smog.
A O3
B CO
C CO2
D CHO

Answer:O3
7 Bio-degradable pollutant pair is
A Domestic waste and sewage
B DDT and Mercury salt
C Mercury salt and plastic
D Aluminium foil and DDT

Answer:Domestic waste and sewage
8 _______ is the uppermost region of the earth atmosphere.
A Stratosphere
B Troposphere
C Exosphere
D Ionosphere

Answer:Exosphere
9 BOD5 means
A Waste decomposed in 5 days
B Oxygen consumed in 5 days
C Microorganisms killed after 5 days
D Amount of dissolved oxygen left after after 5 days

Answer:Oxygen consumed in 5 days
10 Which is the resulting disease due to depletion of ozone layer.
A Thyroid cancer
B Pulmonary cancer
C Skin cancer
D Breast cancer

Answer:Skin cancer
11 Layer that protects us from harmful U.V rays present in____.
A Troposphere
B Stratosphere
C Mesosphere
D Exosphere

Answer:Stratosphere
12 We can see London smog in
A During day time of summer
B During morning time of summer
C During morning time of winter
D During day time of Winter

Answer:During morning time of winter
13 Particulates matter contains _______.
A Chlorobenzene
B Toluene
C Nitrobenzene
D Polycyclic hydrocarbons

Answer:Polycyclic hydrocarbons
14 Cause of Stratosphere’s ozone layer depletion
A CF2Cl2
B C6F16
C C6H6F6
D C6Cl6

Answer:CF2Cl2
15 Pollutant _________ forms by burning of fossil fuels.
A Nitrogen dioxide
B Nitric acid
C Nitrous oxide
D Sulphur dioxide

Answer:Sulphur dioxide
16 Percentage of CO2 in atmosphere is
A 0.0034
B 0.034
C 34.03
D 3.4

Answer:0.034
17 The disease that occurs due to eating high Hg content fish.
A Minimata disease
B Beri-beri disorder
C kwashiorkar disese
D Osteosclerosis

Answer:Minimata disease
18 Summer smog is caused primarily by
A PAN
B CO2
C Ozone
D NO2

Answer:NO2
19 Threat to Agra’s historical monument.
A Hard water of Yamuna river
B Temperature mediated spoilage of marble
C Air pollutants from Mathura refinery
D Weathering of marble

Answer:Air pollutants from Mathura refinery
20 Choose the compound that produce toxic effect.
A Carbon dioxide-Hb
B Carbon monoxide-Hb
C Oxygen-Hb
D Carbon suboxide-Hb

Answer:Carbon monoxide-Hb

Random GK Questions

Q. The Panda belongs to the same family as that of
Q. Which of the following planets of the solar system has the longest day ?
Q. With reference to the blood in a normal person, which one of the following statements is correct?
Q. When the posts of both the President and the Vice President are vacant who among the following officiates as President?
Q. In which one of the following states is Dachigam sanctuary located ?
Q. The term “Apabhramsa” was used in medieval Sanskrit texts to denote:

Chapters

Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series