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

Most hazardous metal pollutant of automobile exhaust is

Question # 2

The pH range of the acid rain is

Question # 3

Air pollution is not caused by

Question # 4

Which is not a component of environment

Question # 5

In Antarctica ozone depletion is due to the formation of following compound

Question # 6

A pollutant affects

Question # 7

Which of the following is not an air

Question # 8

Increased asthmatic attacks in certain seasons are related to

Question # 9

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

The amount of oxygen in the lithosphere is about

Question # 12

Carbon monoxide is pollutant as it

Question # 13

Pick up the correct statement

Question # 14

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 15

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 # 16

Soil remediation means

Question # 17

Which one is the most toxic?

Question # 18

NO and NO2gases in atmosphere are represented by

Question # 19

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 20

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

Question # 21

Which is not the affect of polluted air on environment

Question # 22

Ecology is a science of environment and deals specially with

Question # 23

A single chlorine free radical can destroy how many ozone molecules

Question # 24

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 # 25

In the atmosphere, O2is about

Question # 26

Ozone hole refers to

Question # 27

When chlorofluoro carbon are subjected to U.V. they form

Question # 28

In the atmosphere, CO2is about

Question # 29

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

Question # 30

Which is not the condition for the formation of smog

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
2 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 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
5 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
6 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
7 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
8 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
9 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
10 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs

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