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

Polycyolic aromatic hydrocarbons are taught to be

Question # 2

Exposure to CO results in

Question # 3

Pick up the correct statement

Question # 4

Chromium (VI) is highly toxic and can cause

Question # 5

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 # 6

Soil remediation means

Question # 7

Pollution is

Question # 8

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

Question # 9

Which heavy metals do not have any safe limits

Question # 10

Chief source of water and soil pollution is

Question # 11

Minamata disease is due to pollution of

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

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

Question # 14

The region of earth capable of supporting life is

Question # 15

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 16

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

Question # 17

Water is often treated with chlorine to

Question # 18

Atomospheric pollutant is

Question # 19

Spraying of DDT produces pollution of

Question # 20

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 21

Which is not the condition for the formation of smog

Question # 22

B.O.D is connected with

Question # 23

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

Question # 24

Mottling of teeth is due to presence of an element in drinking water

Question # 25

Which one is the most toxic?

Question # 26

Which is not the affect of polluted air on environment

Question # 27

Increased asthmatic attacks in certain seasons are related to

Question # 28

Which is not a component of environment

Question # 29

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

Question # 30

Ultraviolet radiation from sun causes a reaction that produces

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
2 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
5 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
6 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
7 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
8 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
9 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
10 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution

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