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 gasses are produced from landfills

Question # 2

The film forming components of paints are

Question # 3

The normal amount of overhead ozone is about

Question # 4

Which one is the most toxic?

Question # 5

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 # 6

Atmosphere of big/metropolitan cities is polluted most by

Question # 7

As it passes into food chain, the concentration of DDT

Question # 8

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

Question # 9

Minamata disease is due to pollution of

Question # 10

Air pollution is not caused by

Question # 11

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

Question # 12

Water pollution is mainly due to

Question # 13

Chief source of water and soil pollution is

Question # 14

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

Question # 15

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

Question # 16

Environmental pollution affects

Question # 17

Which factor is helping to reduce the environmental pollution

Question # 18

In the atmosphere, O2is about

Question # 19

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

Question # 20

Soil remediation means

Question # 21

Chromium (VI) is highly toxic and can cause

Question # 22

Burning of fossil fuels is the main source of pollution

Question # 23

Which of the following is not an air

Question # 24

Carbon monoxide is pollutant as it

Question # 25

SO2Makes ______ acid rains

Question # 26

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

Question # 27

DDT is

Question # 28

Water is often treated with chlorine to

Question # 29

Most hazardous metal pollutant of automobile exhaust is

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
2 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
3 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
4 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
5 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
6 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
7 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
8 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
9 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
10 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically

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