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

Classical smog occurs in palces of

Question # 2

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 # 3

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

Question # 4

Air pollution is not caused by

Question # 5

In the atmosphere, O2is about

Question # 6

A pollutant affects

Question # 7

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

Question # 8

B.O.D is connected with

Question # 9

Ultraviolet radiation from sun causes a reaction that produces

Question # 10

NO and NO2gases in atmosphere are represented by

Question # 11

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 12

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

Question # 13

Sulphur dioxide affects

Question # 14

Soil salinity can be measured by

Question # 15

BOD is

Question # 16

Burning of fossil fuels is the main source of pollution

Question # 17

Which causes water pollution?

Question # 18

SO2Makes ______ acid rains

Question # 19

In incinerating the waste is burnt at

Question # 20

UV radiations bring about

Question # 21

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 22

Biodegradable pollutant is

Question # 23

Which gas is not a constituent of atmosphere

Question # 24

Oceans cove ______ percent of the surface of the earth

Question # 25

Which one of the following is not air pollutant gas

Question # 26

Ozone depletion in stratosphere shall result in

Question # 27

In the atmosphere, CO2is about

Question # 28

Chloroflurocarbon releases a chemical harmful to ozone

Question # 29

Domestic waste mostly constitutes

Question # 30

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
2 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
3 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
4 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
5 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
6 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
7 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
8 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
9 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
10 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic

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