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

Pick up the correct statement

Question # 2

The amount of oxygen in the lithosphere is about

Question # 3

Air pollution is not caused by

Question # 4

Which is not the affect of polluted air on environment

Question # 5

The largest item which is recycled is

Question # 6

Increasing skin cancer and high mutation rate are due to

Question # 7

Pollution is

Question # 8

In the atmosphere, CO2is about

Question # 9

Water pollution is mainly due to

Question # 10

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 11

The % of CO2is the atmosphere is

Question # 12

Which is not a method for solid waste management

Question # 13

Eutrophication causes reduction in

Question # 14

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

Question # 15

B.O.D is connected with

Question # 16

In Antarctica ozone depletion is due to the formation of following compound

Question # 17

SO2and NO2produce pollution by increasing

Question # 18

The pH range of the acid rain is

Question # 19

Minamata disease is due to pollution of

Question # 20

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 21

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 22

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 # 23

Depletion of ozone layer is due to

Question # 24

What is the cause of water pollution

Question # 25

Phosphate pollution is caused by

Question # 26

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

Question # 27

Polycyolic aromatic hydrocarbons are taught to be

Question # 28

Ozone hole is maximum over

Question # 29

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

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
2 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
3 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
4 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
5 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
6 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
7 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 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
9 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
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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