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

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Question # 1

Soil salinity can be measured by

Question # 2

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 # 3

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 4

Which is not the affect of polluted air on environment

Question # 5

Fungicides are the pesticides which

Question # 6

Water which his considered to be safe for human consumption is known as

Question # 7

In the atmosphere, O2is about

Question # 8

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

Question # 9

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

Question # 10

Most hazardous metal pollutant of automobile exhaust is

Question # 11

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

Question # 12

Increased asthmatic attacks in certain seasons are related to

Question # 13

DDT is

Question # 14

As it passes into food chain, the concentration of DDT

Question # 15

Chief air pollutant which is likely to deplete ozone layer

Question # 16

Pick up the correct statement

Question # 17

Carbon monoxide is pollutant as it

Question # 18

In the atmosphere, CO2is about

Question # 19

The largest item which is recycled is

Question # 20

Ozone hole refers to

Question # 21

Sulphur dioxide affects

Question # 22

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 23

What is the cause of water pollution

Question # 24

NO and NO2gases in atmosphere are represented by

Question # 25

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 # 26

Acid rains are produced by

Question # 27

Water is often treated with chlorine to

Question # 28

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 29

Which gas is not a constituent of atmosphere

Question # 30

A single chlorine free radical can destroy how many ozone molecules

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
2 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
3 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
4 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
5 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
6 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
7 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
8 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
9 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
10 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above

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