Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 18 Pollution of Air and Water. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 8 Science Pollution of Air and Water MCQs Pdf with Answers to know their preparation level.
Pollution of Air and Water Class 8 Science MCQs Pdf
1. 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
Answer
Answer: (c)
2. Smog =
a) Smoke in dog’s stomach
b) Smoke + fog
c) Smoke dog
d) frog in fog
Answer
Answer: (b)
3. The gas used in refrigerating appliance causing serious damage to ozone is
a) MFCs
b) CFCs
c) LPCs
d) DPCs
Answer
Answer: (b)
4. Acid rain mainly contains
a) Sodium chloride
b) Sulphur di oxide and Nitrogen di oxide
c) Hydrochloric acid
d) Carbon tetra chloride
Answer
Answer: (b)
5. Marble cancer is caused by
a) bacteria
b) virus
c) Acid rain
d) Alkali rain
Answer
Answer: (c)
6. 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
Answer
Answer: (d)
7. Greenhouse gases includes
a) CO2, Methane, Nitrous oxide
b) CO2, Argon, Nitrous oxide
c) CO2, Methane, Chlorine
d) CO2, Methane, Flourine
Answer
Answer: (a)
8. _____ is a commonly used chemical method for purifying water.
a) Brominization
b) Flourination
c) Filtration
d) Chlorination
Answer
Answer: (d)
9. 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
Answer
Answer: (b)
10. Van Mahotsav is
a) Planting trees in January
b) Cutting trees in January
c) Cutting trees in July
d) Planting trees in July
Answer
Answer: (d)
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