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

Result of ozone hole is

Question # 2

Water is often treated with chlorine to

Question # 3

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 4

The normal amount of overhead ozone is about

Question # 5

Which heavy metals do not have any safe limits

Question # 6

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

Question # 7

In purification of potable water the coagulant used is

Question # 8

NO and NO2gases in atmosphere are represented by

Question # 9

Soil remediation means

Question # 10

Potable water is considered to be

Question # 11

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

Question # 12

Which step is unnecessary for purification of water for drinking purposes

Question # 13

The film forming components of paints are

Question # 14

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 # 15

Phosphate pollution is caused by

Question # 16

Oceans cove ______ percent of the surface of the earth

Question # 17

In incinerating the waste is burnt at

Question # 18

Ozone depletion in stratosphere shall result in

Question # 19

Acid rains are produced by

Question # 20

Depletion of ozone layer is due to

Question # 21

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 # 22

Chromium (VI) is highly toxic and can cause

Question # 23

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 24

Cyclone collector is used for minimizing

Question # 25

SO2and NO2produce pollution by increasing

Question # 26

Classical smog occurs in palces of

Question # 27

Drawback DDT as presticide is

Question # 28

Which causes water pollution?

Question # 29

Mottling of teeth is due to presence of an element in drinking water

Question # 30

The amount of oxygen in the lithosphere is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
2 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
3 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
4 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
5 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
6 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
7 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
8 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
9 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
10 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs

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