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Pollution of Air and Water Science - Pollution of Air and Water

Bihar Board (BSEB) - STD 8 - Science (BSEB - English Medium). 53 questions in this chapter.

Question types

Pollution of Air and Water question types

53 questions across 5 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

53
Questions
5
Question groups
5
Question types
Sample Questions

Pollution of Air and Water questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 3M.C.Q. [I MARKS]1 Mark
Which of the following disease cannot be caused by drinking of river water contaminated with untreated sewage?
  • A
    Cholera.
  • B
    Typhoid.
  • ✓
    Tuberculosis.
  • D
    Diarrhea.

Answer: C.

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Q 4M.C.Q. [I MARKS]1 Mark
Which of the following will reach the earth in greater amounts if the number of chlorofluorocarbons released into the air increases?
  • A
    Infrared rays.
  • B
    $X$-rays.
  • C
    Gamma rays.
  • ✓
    Ultraviolet rays.

Answer: D.

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Q 7questions in short. [2 marks ]2 Marks
The farmers use large amounts of a substance $P$ in the fields to increase the crop yield. The excess of $P$ dissolves in water and runs into a lake. The substance $P$ causes rapid growth of tiny green water plants $Q$ in the lake which cover the whole lake like a green sheet. When the plants $Q$ die, the organisms called $R$ decompose them by utilizing $S$ dissolved in lake water. The amount of dissolved Sin water decreases too much due to which the fish living in lake suffocate and die. What are $P, Q, R$ and $S?$
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Q 11questions in short. [3 marks ]3 Marks
State one way in which the air pollution caused by the burning of fossil fuels in transport and industry can kill the fish living in a lake and one way in which the water pollution caused by an agricultural activity can kill fish living in the same lake.
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