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 of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 2

Result of ozone hole is

Question # 3

Exposure to CO results in

Question # 4

Shahi Qilla may be destroyed by

Question # 5

Chief source of water and soil pollution is

Question # 6

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 7

Atomospheric pollutant is

Question # 8

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

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Depletion of ozone layer is due to

Question # 11

Ozone depletion in stratosphere shall result in

Question # 12

Carbon monoxide is harmful to human beings as it

Question # 13

Carbon monoxide is pollutant as it

Question # 14

Atmosphere of big/metropolitan cities is polluted most by

Question # 15

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

Question # 16

Which of the following human activities are contaminating surface and ground waters

Question # 17

Soil remediation means

Question # 18

Domestic waste mostly constitutes

Question # 19

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

Question # 20

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

Question # 21

In the atmosphere, O2is about

Question # 22

Classical smog occurs in palces of

Question # 23

BOD is

Question # 24

What is the cause of water pollution

Question # 25

In incinerating the waste is burnt at

Question # 26

Which one is not a pollutant normally?

Question # 27

The amount of oxygen in the lithosphere is about

Question # 28

Acid rain is due to increase in atmospheric concentration of

Question # 29

Swage water is purified by

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
2 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
3 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
4 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
5 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
6 The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount
A. Iodine
B. Bromine
C. Lead
D. Carbon
7 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
8 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
9 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

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