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 heavy metals do not have any safe limits

Question # 2

Chromium (VI) is highly toxic and can cause

Question # 3

Acid rain is due to increase in atmospheric concentration of

Question # 4

The amount of Si in the lithosphere is about

Question # 5

What is the cause of water pollution

Question # 6

NO and NO2gases in atmosphere are represented by

Question # 7

Cyclone collector is used for minimizing

Question # 8

In purification of potable water the coagulant used is

Question # 9

Which is not a method for solid waste management

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

A single chlorine free radical can destroy how many ozone molecules

Question # 12

Which is not a component of environment

Question # 13

Exposure to CO results in

Question # 14

Ozone hole refers to

Question # 15

Chief source of water and soil pollution is

Question # 16

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

Question # 17

Spraying of DDT produces pollution of

Question # 18

Chromium (VI) is highly toxic and can cause

Question # 19

Increased asthmatic attacks in certain seasons are related to

Question # 20

SO2Makes ______ acid rains

Question # 21

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

Question # 22

Water pollution is mainly due to

Question # 23

Which one is the most toxic?

Question # 24

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

Question # 25

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

Question # 26

Atomospheric pollutant is

Question # 27

Polycyolic aromatic hydrocarbons are taught to be

Question # 28

Sulphur dioxide affects

Question # 29

Pollution is

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
2 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
3 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
4 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
5 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
6 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
7 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
8 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
9 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
10 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone

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