Air Pollution Test

Air Pollution

This is online test 01 for CBSE class 12 Biology Environmental Issues (Air pollution).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Air pollution is: i. 5th leading cause of deaths in Indian sub-continent. ii. ranked among top 10 killers in the world. iii. 7th most dangerous killer in south Asia.
  • A
    only i & ii are correct
    Correct
  • B
    only ii & iii are correct
  • C
    all statements are correct
  • D
    only i & iii are correct
2
A sure indicator of air pollution is :
  • A
    growth of Eichhornia
  • B
    hay fever
  • C
    Growth of bacteria.
  • D
    death of lichens
    Correct
3
Term acid rain was coined for the first time by :
  • A
    Mark Cane
  • B
    Robert August
    Correct
  • C
    Roger Revelle
  • D
    Robert Balling
4
In normal adults, the enzyme which catalyses conversion of MHb into Hb is :
  • A
    MHb protease
  • B
    MHb oxidase
  • C
    MHbreductase
    Correct
  • D
    MHb lipase
5
The noise level that can cause permanent impairment of hearing ability of human beings :
  • A
    equal to or more than 120 dB
  • B
    equal to or more than 150dB
    Correct
  • C
    equal to or more than 100 dB
  • D
    equal to or more than 160dB
6
An amendment in Air (Prevention and control of Pollution) Act1981included a new pollutant named :
  • A
    heat
  • B
    solid waste
  • C
    radioactive waste
  • D
    noise
    Correct
7
Smog which doesn’t contain any secondary pollutants is:
  • A
    none of them
  • B
    Classical smog
    Correct
  • C
    both of them
  • D
    Photochemical smog
8
Match the following: Pollutant a) nitrogen oxides b) fluorides c) PCBs d) Chlorofluorocarbons Source i) jet aeroplane emissions ii) coal burning iii) lightening iv) burning plastics
  • A
    a)-iii, b)-i, c)-iv, d)-ii
  • B
    a)-ii, b)-iii, c)-ii, d)-iv
  • C
    a)-iv, b)-i, c)-ii, d)-iii
  • D
    a)-iii, b)-ii, c)-iv, d)-i
    Correct
9
Read the following statements: i. carbondioxide is a qualitative pollutant. ii. carbondioxide is already present in environment and is termed as pollutant when it’s concentration increases in the environment:
  • A
    Statement i) is wrong and ii) is correct
    Correct
  • B
    both are correct
  • C
    Statement ii) is wrong and i) is correct
  • D
    both are wrong
10
Which of the following is a line source of air pollution?
  • A
    a smoking person while walking
    Correct
  • B
    a forest fire
  • C
    towns
  • D
    thermal power plants