Class 8 Pollution Of Air And Water CBSE Questions & Answers

Class 8 · Pollution Of Air And Water

This is Science Class 8 Pollution of Air and Water CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
An ambitious plan to save the river Ganga, launched in 1985 was
  • A
    Save Ganga Movement
  • B
    Ganga Cleanness drive
  • C
    Ganga Action Plan
    Correct
  • D
    Ganga Bancho Andolon
2
World largest eco-friendly CNG bus service is
  • A
    Delhi Transport Corporation
    Correct
  • B
    Rajasthan Roadways
  • C
    Mumbai Transport Service
  • D
    UP Bus Services
3
WWF stands for
  • A
    Water workers fund
  • B
    World Wide fund for nature
    Correct
  • C
    World woman fund
  • D
    Water work fund
4
Which of the following is not a alternative source of energy?
  • A
    Solar energy
  • B
    Petrol
    Correct
  • C
    Wind energy
  • D
    Hydropower
5
The substance like sewage, toxic chemicals and slits form the
  • A
    Soil pollutant
  • B
    Water pollutant
    Correct
  • C
    Air pollutant
  • D
    Water purifier
6
Van Mahotsav is celebrated in month of
  • A
    February
  • B
    July
    Correct
  • C
    August
  • D
    January
7
Adding some material to water that spoils it quality and change the smell and colour is called
  • A
    Pollination
  • B
    Water pollution
    Correct
  • C
    Water work
  • D
    Water treatment
8
Dry leaves should be ___________ to reduce air pollution.
  • A
    Thrown into rivers
  • B
    Thrown into open space
  • C
    Mulching
    Correct
  • D
    Burned
9
Which of the following is common toxic chemical that get accumulated by biomagnifications?
  • A
    Ozone
  • B
    DDT
    Correct
  • C
    CFC
  • D
    UV rays
10
Which of the following substance is present in least amount in air?
  • A
    Carbon dioxide
  • B
    Nitrogen
  • C
    Helium
    Correct
  • D
    Oxygen
11
Amount of water recommended by United Nation per person per day is
  • A
    30 litres
  • B
    50 litres
  • C
    60 litres
  • D
    40 litres
    Correct
12
In water works, first step is
  • A
    Sedimentation
    Correct
  • B
    Chlorination
  • C
    Aeration
  • D
    Filtration
13
If a person consumes contaminated water, he may suffer from the disease called
  • A
    Tuberculosis
  • B
    Jaundice
    Correct
  • C
    Malaria
  • D
    Skin disease
14
Traffic police use _________ to prevent from inhaling polluted air.
  • A
    Mask
    Correct
  • B
    All of these
  • C
    Tissue paper
  • D
    Oxygen cylinder
15
Water is the most common -----------.
  • A
    Solvent
    Correct
  • B
    Solution
  • C
    Suspension
  • D
    Solute