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

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

Question # 2

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

Question # 3

In purification of potable water the coagulant used is

Question # 4

Soil salinity can be measured by

Question # 5

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 # 6

Classical smog occurs in palces of

Question # 7

Which one is the most toxic?

Question # 8

The film forming components of paints are

Question # 9

Potable water is considered to be

Question # 10

Swage water is purified by

Question # 11

Chromium (VI) is highly toxic and can cause

Question # 12

Atmosphere of big/metropolitan cities is polluted most by

Question # 13

Burning of fossil fuels is the main source of pollution

Question # 14

SO2Makes ______ acid rains

Question # 15

Which of the following is not an air

Question # 16

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

Question # 17

Increased asthmatic attacks in certain seasons are related to

Question # 18

A pollutant affects

Question # 19

Pollution is

Question # 20

Oceans cove ______ percent of the surface of the earth

Question # 21

NO and NO2gases in atmosphere are represented by

Question # 22

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

Question # 23

Increasing skin cancer and high mutation rate are due to

Question # 24

Cyclone collector is used for minimizing

Question # 25

DDT is

Question # 26

Which is not the condition for the formation of smog

Question # 27

Soil remediation means

Question # 28

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

Question # 29

Phosphate pollution is caused by

Question # 30

Acid rains are produced by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
2 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
3 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
4 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
5 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
6 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
7 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
8 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
9 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
10 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water

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