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

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Question # 1

Cyclone collector is used for minimizing

Question # 2

Ozone depletion in stratosphere shall result in

Question # 3

Carbon monoxide is pollutant as it

Question # 4

The region of earth capable of supporting life is

Question # 5

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

Question # 6

In purification of potable water the coagulant used is

Question # 7

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 8

Which gas is not a constituent of atmosphere

Question # 9

Oceans cove ______ percent of the surface of the earth

Question # 10

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

Question # 11

SO2Makes ______ acid rains

Question # 12

UV radiations bring about

Question # 13

Soil remediation means

Question # 14

Domestic waste mostly constitutes

Question # 15

SO2and NO2produce pollution by increasing

Question # 16

The amount of Si in the lithosphere is about

Question # 17

Biodegradable pollutant is

Question # 18

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 # 19

Which factor is helping to reduce the environmental pollution

Question # 20

Shahi Qilla may be destroyed by

Question # 21

Environmental pollution affects

Question # 22

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

Question # 23

Drained sewage has B.O.D

Question # 24

Potable water is considered to be

Question # 25

Exposure to CO results in

Question # 26

Acid rain is due to increase in atmospheric concentration of

Question # 27

Atomospheric pollutant is

Question # 28

Chief air pollutant which is likely to deplete ozone layer

Question # 29

Photochemical smog is caused by

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
2 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
5 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
6 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
7 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
8 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
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 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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