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 is not a component of environment

Question # 2

Water is often treated with chlorine to

Question # 3

Shahi Qilla may be destroyed by

Question # 4

Chromium (VI) is highly toxic and can cause

Question # 5

Ozone depletion in stratosphere shall result in

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

The % of CO2is the atmosphere is

Question # 8

Which of the following is not an air

Question # 9

The normal amount of overhead ozone is about

Question # 10

A pollutant affects

Question # 11

Photochemical smog is caused by

Question # 12

Drawback DDT as presticide is

Question # 13

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

Question # 14

Acid rains are produced by

Question # 15

The film forming components of paints are

Question # 16

Sulphur dioxide affects

Question # 17

Which one of the following is not air pollutant gas

Question # 18

Ozone hole is maximum over

Question # 19

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

Question # 20

Polycyolic aromatic hydrocarbons are taught to be

Question # 21

Classical smog occurs in palces of

Question # 22

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

Question # 23

Chief air pollutant which is likely to deplete ozone layer

Question # 24

Air pollution is not caused by

Question # 25

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 # 26

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

Question # 27

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 28

Increased asthmatic attacks in certain seasons are related to

Question # 29

Cyclone collector is used for minimizing

Question # 30

BOD is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
2 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
5 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
6 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
7 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
8 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
9 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
10 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2

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