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

The region of earth capable of supporting life is

Question # 2

Which gasses are produced from landfills

Question # 3

The % of CO2is the atmosphere is

Question # 4

Which one of the following is not air pollutant gas

Question # 5

Swage water is purified by

Question # 6

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 7

Which is not the affect of polluted air on environment

Question # 8

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 9

Fungicides are the pesticides which

Question # 10

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

Question # 11

Result of ozone hole is

Question # 12

As it passes into food chain, the concentration of DDT

Question # 13

Water is often treated with chlorine to

Question # 14

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 15

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

Question # 16

Depletion of ozone layer is due to

Question # 17

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 18

Shahi Qilla may be destroyed by

Question # 19

Carbon monoxide is pollutant as it

Question # 20

Acid rains are produced by

Question # 21

A pollutant affects

Question # 22

Soil salinity can be measured by

Question # 23

Which is not a component of environment

Question # 24

Sulphur dioxide affects

Question # 25

Which gas is not a constituent of atmosphere

Question # 26

Soil remediation means

Question # 27

Chief source of water and soil pollution is

Question # 28

Carbon monoxide is harmful to human beings as it

Question # 29

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

Question # 30

When chlorofluoro carbon are subjected to U.V. they form

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
2 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
3 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
4 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
5 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
6 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
7 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
8 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
9 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
10 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically

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