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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  • Time Allowed30

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

As it passes into food chain, the concentration of DDT

Question # 2

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

Question # 3

Burning of fossil fuels is the main source of pollution

Question # 4

In the atmosphere, CO2is about

Question # 5

Minamata disease is due to pollution of

Question # 6

Result of ozone hole is

Question # 7

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 8

Which is not a method for solid waste management

Question # 9

Which one is the most toxic?

Question # 10

Chief air pollutant which is likely to deplete ozone layer

Question # 11

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

Question # 12

B.O.D is connected with

Question # 13

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

Question # 14

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 15

Which factor is helping to reduce the environmental pollution

Question # 16

Exposure to CO results in

Question # 17

Phosphate pollution is caused by

Question # 18

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

Question # 19

Soil remediation means

Question # 20

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 # 21

In purification of potable water the coagulant used is

Question # 22

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 23

Which is not the affect of polluted air on environment

Question # 24

Ozone hole refers to

Question # 25

Increased asthmatic attacks in certain seasons are related to

Question # 26

Pollution is

Question # 27

Spraying of DDT produces pollution of

Question # 28

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

Question # 29

Which is not a component of environment

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
2 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
3 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
4 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
5 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+
6 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
7 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
8 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
9 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
10 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter

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