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

SO2and NO2produce pollution by increasing

Question # 2

Photochemical smog is caused by

Question # 3

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

Question # 4

Air pollution is not caused by

Question # 5

Chloroflurocarbon releases a chemical harmful to ozone

Question # 6

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

Question # 7

Which gasses are produced from landfills

Question # 8

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

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

The amount of oxygen in the lithosphere is about

Question # 11

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

Question # 12

The film forming components of paints are

Question # 13

Potable water is considered to be

Question # 14

In the atmosphere, CO2is about

Question # 15

UV radiations bring about

Question # 16

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 17

Which is not the affect of polluted air on environment

Question # 18

Which of the following human activities are contaminating surface and ground waters

Question # 19

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

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

Classical smog occurs in palces of

Question # 22

Which is not a method for solid waste management

Question # 23

Burning of fossil fuels is the main source of pollution

Question # 24

Soil remediation means

Question # 25

Most hazardous metal pollutant of automobile exhaust is

Question # 26

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

Question # 27

Which step is unnecessary for purification of water for drinking purposes

Question # 28

Cyclone collector is used for minimizing

Question # 29

Chief air pollutant which is likely to deplete ozone layer

Question # 30

Carbon monoxide is harmful to human beings as it

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
2 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
3 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
4 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
5 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
6 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
7 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
8 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
9 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
10 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these

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