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

Polycyolic aromatic hydrocarbons are taught to be

Question # 2

Increasing skin cancer and high mutation rate are due to

Question # 3

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

Question # 4

The film forming components of paints are

Question # 5

Ozone hole refers to

Question # 6

Pollution is

Question # 7

In incinerating the waste is burnt at

Question # 8

Which one of the following is not air pollutant gas

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

Which one is not a pollutant normally?

Question # 11

A pollutant affects

Question # 12

Acid rains are produced by

Question # 13

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

Question # 14

SO2and NO2produce pollution by increasing

Question # 15

Chief source of water and soil pollution is

Question # 16

Which is not a component of environment

Question # 17

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

Question # 18

Domestic waste mostly constitutes

Question # 19

Shahi Qilla may be destroyed by

Question # 20

What is the cause of water pollution

Question # 21

Exposure to CO results in

Question # 22

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 # 23

Ecology is a science of environment and deals specially with

Question # 24

Which heavy metals do not have any safe limits

Question # 25

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

Question # 26

Pick up the correct statement

Question # 27

Which of the following is not an air

Question # 28

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 29

Chromium (VI) is highly toxic and can cause

Question # 30

Most hazardous metal pollutant of automobile exhaust is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
2 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
3 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
4 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
5 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
6 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
7 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
8 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
9 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
10 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges

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