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

Water pollution is mainly due to

Question # 2

SO2Makes ______ acid rains

Question # 3

Potable water is considered to be

Question # 4

Exposure to CO results in

Question # 5

Chief source of water and soil pollution is

Question # 6

Eutrophication causes reduction in

Question # 7

Which factor is helping to reduce the environmental pollution

Question # 8

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

Question # 9

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 10

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

Question # 11

In purification of potable water the coagulant used is

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

Increasing skin cancer and high mutation rate are due to

Question # 14

Which one is the most toxic?

Question # 15

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 16

Which one is not a pollutant normally?

Question # 17

NO and NO2gases in atmosphere are represented by

Question # 18

Which gasses are produced from landfills

Question # 19

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 20

What is the cause of water pollution

Question # 21

Acid rain is due to increase in atmospheric concentration of

Question # 22

Air pollution is not caused by

Question # 23

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 # 24

Depletion of ozone layer is due to

Question # 25

SO2and NO2produce pollution by increasing

Question # 26

Chief air pollutant which is likely to deplete ozone layer

Question # 27

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 28

Fungicides are the pesticides which

Question # 29

Chloroflurocarbon releases a chemical harmful to ozone

Question # 30

A pollutant affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
3 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
4 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
5 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
6 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
7 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
8 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
9 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
10 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides

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