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

Potable water is considered to be

Question # 2

SO2and NO2produce pollution by increasing

Question # 3

Exposure to CO results in

Question # 4

Which one is not a pollutant normally?

Question # 5

Which step is unnecessary for purification of water for drinking purposes

Question # 6

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 7

NO and NO2gases in atmosphere are represented by

Question # 8

Which heavy metals do not have any safe limits

Question # 9

Which gasses are produced from landfills

Question # 10

Which factor is helping to reduce the environmental pollution

Question # 11

Swage water is purified by

Question # 12

In purification of potable water the coagulant used is

Question # 13

Minamata disease is due to pollution of

Question # 14

Pollution is

Question # 15

Drawback DDT as presticide is

Question # 16

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 17

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 18

Shahi Qilla may be destroyed by

Question # 19

Which is not the affect of polluted air on environment

Question # 20

B.O.D is connected with

Question # 21

Burning of fossil fuels is the main source of pollution

Question # 22

Depletion of ozone layer is due to

Question # 23

Which gas is not a constituent of atmosphere

Question # 24

Carbon monoxide is pollutant as it

Question # 25

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 26

SO2Makes ______ acid rains

Question # 27

The largest item which is recycled is

Question # 28

As it passes into food chain, the concentration of DDT

Question # 29

Increasing skin cancer and high mutation rate are due to

Question # 30

Which is not the condition for the formation of smog

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
2 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
3 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
4 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
5 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
6 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
7 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
8 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
9 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
10 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these

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