ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Which gas is not a constituent of atmosphere

Question # 2

Ecosystem is a smaller unit of

Question # 3

Which of the following waste material is not recycled for use again

Question # 4

Ozone depletion in stratosphere shall result in

Question # 5

Ultraviolet radiation from sun causes a reaction that produces

Question # 6

In Antarctica ozone depletion is due to the formation of following compound

Question # 7

Water which his considered to be safe for human consumption is known as

Question # 8

Which gasses are produced from landfills

Question # 9

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 10

Air pollution is not caused by

Question # 11

Acid rain is due to increase in atmospheric concentration of

Question # 12

The amount of Si in the lithosphere is about

Question # 13

Pollution is

Question # 14

Sulphur dioxide affects

Question # 15

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 16

As it passes into food chain, the concentration of DDT

Question # 17

Swage water is purified by

Question # 18

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 19

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 20

Increased asthmatic attacks in certain seasons are related to

Question # 21

Burning of fossil fuels is the main source of pollution

Question # 22

The % of CO2is the atmosphere is

Question # 23

Which factor is helping to reduce the environmental pollution

Question # 24

Which causes water pollution?

Question # 25

Ozone hole is maximum over

Question # 26

Which is not the condition for the formation of smog

Question # 27

NO and NO2gases in atmosphere are represented by

Question # 28

In the atmosphere, CO2is about

Question # 29

Cyclone collector is used for minimizing

Question # 30

Ecology is a science of environment and deals specially with

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
2 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
3 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
4 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
5 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
6 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
7 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
8 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
9 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
10 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin

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