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

  • Total Questions30

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ECAT Chemistry Chapter 27 Environmental Chemistry

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Question # 1

Shahi Qilla may be destroyed by

Question # 2

Chromium (VI) is highly toxic and can cause

Question # 3

Atmosphere of big/metropolitan cities is polluted most by

Question # 4

Oceans cove ______ percent of the surface of the earth

Question # 5

A single chlorine free radical can destroy how many ozone molecules

Question # 6

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

Question # 7

Which causes water pollution?

Question # 8

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

Question # 9

Burning of fossil fuels is the main source of pollution

Question # 10

Most hazardous metal pollutant of automobile exhaust is

Question # 11

What is the cause of water pollution

Question # 12

Cyclone collector is used for minimizing

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

The pH range of the acid rain is

Question # 15

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 # 16

Which gasses are produced from landfills

Question # 17

Drained sewage has B.O.D

Question # 18

Atomospheric pollutant is

Question # 19

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 20

Which is not a component of environment

Question # 21

Acid rains are produced by

Question # 22

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

Question # 23

Phosphate pollution is caused by

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

NO and NO2gases in atmosphere are represented by

Question # 26

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

Question # 27

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

Question # 28

Which heavy metals do not have any safe limits

Question # 29

Increasing skin cancer and high mutation rate are due to

Question # 30

Environmental pollution affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
2 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
3 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
4 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
5 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
6 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
7 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
8 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
9 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
10 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down

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