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

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

Question # 2

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

Question # 3

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

Question # 4

Increased asthmatic attacks in certain seasons are related to

Question # 5

Ozone hole is maximum over

Question # 6

Chloroflurocarbon releases a chemical harmful to ozone

Question # 7

NO and NO2gases in atmosphere are represented by

Question # 8

Which one of the following is not air pollutant gas

Question # 9

Air pollution is not caused by

Question # 10

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

Question # 11

Soil salinity can be measured by

Question # 12

DDT is

Question # 13

Fungicides are the pesticides which

Question # 14

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

Question # 15

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

Question # 16

A pollutant affects

Question # 17

Chief source of water and soil pollution is

Question # 18

Sulphur dioxide affects

Question # 19

Ecology is a science of environment and deals specially with

Question # 20

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

Question # 21

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

Question # 22

Increasing skin cancer and high mutation rate are due to

Question # 23

Mottling of teeth is due to presence of an element in drinking water

Question # 24

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

Question # 25

Which is not a component of environment

Question # 26

UV radiations bring about

Question # 27

SO2Makes ______ acid rains

Question # 28

Most hazardous metal pollutant of automobile exhaust is

Question # 29

Which gasses are produced from landfills

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
3 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
4 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
5 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
6 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
7 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
8 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
9 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
10 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

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