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 of the following human activities are contaminating surface and ground waters

Question # 2

Fungicides are the pesticides which

Question # 3

Minamata disease is due to pollution of

Question # 4

Which is not a component of environment

Question # 5

Which causes water pollution?

Question # 6

As it passes into food chain, the concentration of DDT

Question # 7

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

Question # 8

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 9

DDT is

Question # 10

Which is not the affect of polluted air on environment

Question # 11

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

Question # 12

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 # 13

Chief source of water and soil pollution is

Question # 14

Which one is the most toxic?

Question # 15

Which heavy metals do not have any safe limits

Question # 16

A single chlorine free radical can destroy how many ozone molecules

Question # 17

The amount of Si in the lithosphere is about

Question # 18

Sulphur dioxide affects

Question # 19

What is the cause of water pollution

Question # 20

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 # 21

Drained sewage has B.O.D

Question # 22

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

Question # 23

Which one of the following is not air pollutant gas

Question # 24

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 25

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 # 26

Carbon monoxide is pollutant as it

Question # 27

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

Question # 28

Drawback DDT as presticide is

Question # 29

Shahi Qilla may be destroyed by

Question # 30

Ecosystem is a smaller unit of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
2 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
3 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
4 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
5 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
6 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
7 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
8 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
9 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
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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