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

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

Question # 2

Shahi Qilla may be destroyed by

Question # 3

A pollutant affects

Question # 4

Which factor is helping to reduce the environmental pollution

Question # 5

The % of CO2is the atmosphere is

Question # 6

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

Question # 7

Result of ozone hole is

Question # 8

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 9

Which of the following is not an air

Question # 10

Which heavy metals do not have any safe limits

Question # 11

Ozone hole is maximum over

Question # 12

Which is not a method for solid waste management

Question # 13

Pollution is

Question # 14

The film forming components of paints are

Question # 15

Which one of the following is not air pollutant gas

Question # 16

In incinerating the waste is burnt at

Question # 17

Carbon monoxide is pollutant as it

Question # 18

The normal amount of overhead ozone is about

Question # 19

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

Question # 20

Soil salinity can be measured by

Question # 21

SO2Makes ______ acid rains

Question # 22

Drained sewage has B.O.D

Question # 23

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

Question # 24

Acid rains are produced by

Question # 25

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

Question # 26

Chloroflurocarbon releases a chemical harmful to ozone

Question # 27

NO and NO2gases in atmosphere are represented by

Question # 28

Which step is unnecessary for purification of water for drinking purposes

Question # 29

Ozone depletion in stratosphere shall result in

Question # 30

Minamata disease is due to pollution of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
3 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
4 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
5 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
6 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
7 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
8 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
9 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
10 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate

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