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

Shahi Qilla may be destroyed by

Question # 2

The region of earth capable of supporting life is

Question # 3

A single chlorine free radical can destroy how many ozone molecules

Question # 4

Phosphate pollution is caused by

Question # 5

The % of CO2is the atmosphere is

Question # 6

In incinerating the waste is burnt at

Question # 7

Ecosystem is a smaller unit of

Question # 8

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 9

Which is not a component of environment

Question # 10

In the atmosphere, CO2is about

Question # 11

Chloroflurocarbon releases a chemical harmful to ozone

Question # 12

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 13

Soil remediation means

Question # 14

Acid rain is due to increase in atmospheric concentration of

Question # 15

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 16

Which factor is helping to reduce the environmental pollution

Question # 17

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

Question # 18

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

Question # 19

Water pollution is mainly due to

Question # 20

Which is not the affect of polluted air on environment

Question # 21

Water is often treated with chlorine to

Question # 22

Soil salinity can be measured by

Question # 23

Which causes water pollution?

Question # 24

Which one is the most toxic?

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

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

Question # 27

Which gasses are produced from landfills

Question # 28

Ozone hole refers to

Question # 29

Sulphur dioxide affects

Question # 30

Biodegradable pollutant is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
5 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
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
9 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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