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

The % of CO2is the atmosphere is

Question # 2

The amount of oxygen in the lithosphere is about

Question # 3

Potable water is considered to be

Question # 4

Classical smog occurs in palces of

Question # 5

Pollution is

Question # 6

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

Question # 7

Pick up the correct statement

Question # 8

A single chlorine free radical can destroy how many ozone molecules

Question # 9

Increasing skin cancer and high mutation rate are due to

Question # 10

The region of earth capable of supporting life is

Question # 11

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

Question # 12

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

Question # 13

What is the cause of water pollution

Question # 14

Which is not the condition for the formation of smog

Question # 15

In the atmosphere, O2is about

Question # 16

SO2and NO2produce pollution by increasing

Question # 17

Exposure to CO results in

Question # 18

The normal amount of overhead ozone is about

Question # 19

Which is not a component of environment

Question # 20

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

Question # 21

Ultraviolet radiation from sun causes a reaction that produces

Question # 22

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 # 23

Minamata disease is due to pollution of

Question # 24

In Antarctica ozone depletion is due to the formation of following compound

Question # 25

Burning of fossil fuels is the main source of pollution

Question # 26

Which is not a method for solid waste management

Question # 27

In the atmosphere, CO2is about

Question # 28

Which one of the following is not air pollutant gas

Question # 29

Which one is the most toxic?

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
2 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
3 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
4 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
7 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
8 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
9 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
10 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C

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