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

Ecology is a science of environment and deals specially with

Question # 2

Which is not the condition for the formation of smog

Question # 3

The amount of oxygen in the lithosphere is about

Question # 4

In incinerating the waste is burnt at

Question # 5

Oceans cove ______ percent of the surface of the earth

Question # 6

Which gas is not a constituent of atmosphere

Question # 7

Which heavy metals do not have any safe limits

Question # 8

BOD is

Question # 9

The normal amount of overhead ozone is about

Question # 10

Ozone hole is maximum over

Question # 11

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

Question # 12

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 # 13

The % of CO2is the atmosphere is

Question # 14

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 15

Drained sewage has B.O.D

Question # 16

Exposure to CO results in

Question # 17

Cyclone collector is used for minimizing

Question # 18

Burning of fossil fuels is the main source of pollution

Question # 19

In the atmosphere, O2is about

Question # 20

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

Question # 21

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

Question # 22

Which is not a method for solid waste management

Question # 23

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

Question # 24

Water is often treated with chlorine to

Question # 25

Chloroflurocarbon releases a chemical harmful to ozone

Question # 26

Most hazardous metal pollutant of automobile exhaust is

Question # 27

Result of ozone hole is

Question # 28

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 29

Acid rains are produced by

Question # 30

Ozone layer of stratosphere requires protection from indiscriminate use of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
2 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
3 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
4 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
5 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
6 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
7 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
8 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
9 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
10 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

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