CBSE Class 8 Science Pollution of Air and Water MCQs

Refer to CBSE Class 8 Science Pollution of Air and Water MCQs provided below available for download in Pdf. The MCQ Questions for Class 8 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 18 Pollution of Air and Water are an important part of exams for Class 8 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 8 Science and also download more latest study material for all subjects

MCQ for Class 8 Science Chapter 18 Pollution of Air and Water

Class 8 Science students should refer to the following multiple-choice questions with answers for Chapter 18 Pollution of Air and Water in Class 8.

Chapter 18 Pollution of Air and Water MCQ Questions Class 8 Science with Answers

Chapter 18 POLLUTION OF AIR AND WATER

Question: Chlorofluorocarbon is used in
a) All
b) Refrigerators
c) Air conditioners
d) Perfumes

Answer: A

Question: Pollution of water is responsible for
a) All
b) Oil refineries
c) Paper factories
d) Sugar mills

Answer: A

Question: CNG is a
a) Clean fuel
b) Polluted fuel
c) Harmful fuel
d) None of the options

Answer: A

Question: What causes pollution
a) Human activities
b) Trees
c) Human activities and trees
d) None of the options

Answer: A

Question: The percentage of nitrogen is
a) 0.78
b) 0.21
c) 0.12
d) 0.87

Answer: A

Question: Green House gas is
a) Carbon dioxide
b) Nitrogen
c) Oxygen
d) Methane

Answer: B

Question: Air pollution causes
a) Respiratory problems
b) Global warming
c) Soil erosion
d) None of the options

Answer: A

Question: Most polluted river in the world is
a) Ganga
b) Yamuna
c) Cavery
d) Chenab

Answer: A

Question: The Taj Mahal is being affected by
a) Air pollution
b) Noise pollution
c) Water pollution
d) None of the options

Answer: C

Question: Highest percentage of air consists of
a) Nitrogen
b) Oxygen
c) Carbon dioxide
d) Argon

Answer: A

Question. The reason for greenhouse effect is:
(a) Decrease in quantity of CO2 in atmosphere
(b) Increase in quantity of CO2 in atmosphere
(c) Decrease in quantity of oxygen in atmosphere
(d) Increase in quantity of oxygen in atmosphere

Answer : B

Question. Trapping of unescapable radiations of sun in Earth’s environment is called:
(a) Earth warming
(b) Greenhouse warming
(c) Greenhouse effect
(d) None of these

Answer : C

Question. Which Of The Following Is Not A Way To Conserve Water?
(a) Replace
(b) Reduce
(c) Reuse
(d) Recycle

Answer : A

Question. Heat is reflected from the earth's surface and trapped in the atmosphere. Which phenomena is being referred to?
(a) Global warming
(b) Ozone depletion
(c) Greenhouse effect
(d) Thermal pollution

Answer : C

Question. The following gas is not an air pollutant:
(a) Carbon dioxide
(b) Oxides of nitrogen
(c) Sulphur dioxide
(d) Oxygen

Answer : D

Question. Air pollution causes
(a) Global warming
(b) Respiratory problems
(c) Soil erosion
(d) None of these

Answer : B

Question. Incomplete burning of fuels produces:
(a) Carbon dioxide
(b) Carbon particles
(c) Carbon monoxide
(d) None of these

Answer : C

Question. One Of The Following Does Not Contribute In Producing Acid Rain. This One Is:
(a) Nitrogen dioxide
(b) Nitrogen monoxide
(c) Carbon monoxide
(d) Sulphur dioxide

Answer : C

Question. Most polluted river in the world is:
(a) Yamuna
(b) Cavery
(c) Chenab
(d) Ganga

Answer : D

Question. Most polluted river in the world is:
(a) Yamuna
(b) Cavery
(c) Chenab
(d) Ganga

Answer : D

Question. A poisonous gas emitted by Mathura Refinery and other industries in and around Taj which cause acid rain is:
(a) Carobon monoxide
(b) Methane
(c) Sulphur dioxide
(d) Oxygen

Answer : C

Question. Pollution of water is responsible for
(a) Oil refineries
(b) Paper factories
(c) Sugar mills
(d) All

Answer : D

Question. The water that is purified and fit for drinking is called
(a) Potable water
(b) Pure water
(c) Hard water
(d) Saline water

Answer : A

Question. From which of the following bad effects does the ozone layer in our atmosphere protect us?
(a) Carbon dioxide
(b) CFC's
(c) The sun's ultraviolet rays
(d) All of the above

Answer: C

Question. Identify the gas associated with greenhouse effect.
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen dioxide
(d) Sulphur dioxide

Answer : A

Question. Instead of the fossil fuels for our energy requirements we can use :
(a) Solar energy
(b) Hydropower
(c) Wind energy
(d) All of these

Answer : D

 

Question. Carbon monoxide in vehicle exhaust causes
a) 
Increased oxygen carrying capacity of RBCs
b) Reduced Nitrogen carrying capacity of RBCs
c) Reduced oxygen carrying capacity of RBCs
d) Reduced carbon carrying capacity of RBCs

Question. Smog =
a) 
Smoke in dog’s stomach
b) Smoke + fog
c) Smoke dog
d) frog in fog

Question. The gas used in refrigerating appliance causing serious damage to ozone is
a) 
MFCs
b) CFCs
c) LPCs
d) DPCs

Question.  Acid rain mainly contains
a) 
Sodium chloride
b) Sulphur di oxide and Nitrogen di oxide
c) Hydrochloric acid
d) Carbon tetra chloride

Question.  Marble cancer is caused by
a) 
bacteria
b) virus
c) Acid rain
d) Alkali rain

Question. Greenhouse effect is
a) 
Painting house green in colour
b) Wearing green colour dress
c) Having green room in the house
d) Sun’s heat is trapped and not allowed to escape

Question. Greenhouse gases includes
a) 
CO2, Methane, Nitrous oxide
b) CO2, Argon, Nitrous oxide
c) CO2, Methane, Chlorine
d) CO2, Methane, Flourine

Question.  _____ is a commonly used chemical method for purifying water.
a) 
Brominization
b) Flourination
c) Filtration
d) Chlorination

Question.  Ganga Action Plan is associated with
a) 
Increase of fish culture in the Ganges
b) Reduce Ganga water pollution
c) Construct more bridges over the Ganges
d) Increase water transport on the Ganges

Question.  Van Mahotsav is
a) 
Planting trees in January
b) Cutting trees in January
c) Cutting trees in July
d) Planting trees in July 

Chapter 01 Crop Production and Management
CBSE Class 8 Science Crop Production and Management MCQs
Chapter 02 Microorganisms Friend or Foe
CBSE Class 8 Science Microorganisms Friend or Foe MCQs
Chapter 03 Synthetic Fibres and Plastics
CBSE Class 8 Science Synthetic Fibre and Plastics MCQs
Chapter 04 Materials Metals and Non Metals
CBSE Class 8 Science Materials Metals and Non Metals MCQs
Chapter 05 Coal and Petroleum
CBSE Class 8 Science Coal and Petroleum MCQs
Chapter 06 Combustion and Flame
CBSE Class 8 Science Combustion and Flame MCQs
Chapter 07 Conservation of Plants and Animals
CBSE Class 8 Science Conservation of Plants and Animals MCQs
Chapter 08 Cell Structure and Functions
CBSE Class 8 Science Cell Structure and Functions MCQs
Chapter 09 Reproduction in Animals
CBSE Class 8 Science Reproduction in Animals MCQs
Chapter 10 Reaching the Age of Adolescence
CBSE Class 8 Science Reaching The Age of Adolescence MCQs
Chapter 11 Force and Pressure
CBSE Class 8 Science Force and Pressure MCQs
Chapter 14 Chemical Effects of Electric Current
CBSE Class 8 Science Chemical Effect of Electric Current MCQs
Chapter 15 Some Natural Phenomena
CBSE Class 8 Science Some Natural Phenomena MCQs
Chapter 17 Stars and The Solar System
CBSE Class 8 Science Stars and Solar System MCQs
Chapter 18 Pollution of Air and Water
CBSE Class 8 Science Pollution of Air and Water MCQs
More MCQ Questions Class 8 Science
CBSE Class 8 Science MCQs Bank

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