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

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Question # 1

Which one is not a pollutant normally?

Question # 2

The amount of Si in the lithosphere is about

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Ozone hole refers to

Question # 7

Spraying of DDT produces pollution of

Question # 8

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

Question # 9

Which gasses are produced from landfills

Question # 10

Chromium (VI) is highly toxic and can cause

Question # 11

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 12

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

Question # 13

Soil salinity can be measured by

Question # 14

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

Question # 15

Drained sewage has B.O.D

Question # 16

Which one is the major reason for pollution in high cities?

Question # 17

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

Question # 18

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

Question # 19

Water is often treated with chlorine to

Question # 20

Water pollution is mainly due to

Question # 21

Which factor is helping to reduce the environmental pollution

Question # 22

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 23

The film forming components of paints are

Question # 24

UV radiations bring about

Question # 25

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

Question # 26

SO2Makes ______ acid rains

Question # 27

The pH range of the acid rain is

Question # 28

As it passes into food chain, the concentration of DDT

Question # 29

Which gas is not a constituent of atmosphere

Question # 30

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
4 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
7 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
8 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
9 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
10 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

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