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

UV radiations bring about

Question # 2

Cyclone collector is used for minimizing

Question # 3

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

Question # 4

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 5

The % of CO2is the atmosphere is

Question # 6

Which is not the condition for the formation of smog

Question # 7

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

Question # 8

Water pollution is mainly due to

Question # 9

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 10

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 # 11

The amount of oxygen in the lithosphere is about

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

Pollution is

Question # 15

Which is not the affect of polluted air on environment

Question # 16

Fungicides are the pesticides which

Question # 17

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

Question # 18

In purification of potable water the coagulant used is

Question # 19

Air pollution is not caused by

Question # 20

Which one is the most toxic?

Question # 21

Pick up the correct statement

Question # 22

Water is often treated with chlorine to

Question # 23

Which of the following is not an air

Question # 24

Which causes water pollution?

Question # 25

Which is not a method for solid waste management

Question # 26

Biodegradable pollutant is

Question # 27

SO2and NO2produce pollution by increasing

Question # 28

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

Question # 29

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

Question # 30

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
2 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
3 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
4 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
5 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
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 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
8 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
9 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
10 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

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