Air Pollution Test

Air Pollution

This is online test 02 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
In Delhi whole public transport system runs on CNG because : i. burns more efficiently than petrol/diesel ii. is cheaper than petrol/diesel iii. cannot be siphoned iv. can be adulterated
  • A
    i,ii,iii are correct
    Correct
  • B
    i & ii are correct
  • C
    all are correct
  • D
    i,ii,iv are correct
2
\(C{O_{\mathbf{2}}}\) concentration is continuously increasing in atmosphere and due to increased CO2 levels: i. efficiency of water use by plants will increase ii. \(C{O_{\mathbf{2}}}\)fertilization effect will occur iii. rate of transpiration will decrease
  • A
    only statement i & iii are correct
  • B
    only statement i & ii are correct
  • C
    only (i) is correct
  • D
    all statements are correct
    Correct
3
The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :
  • A
    efficiency coincides with the change in charges on electrodes
  • B
    the collection efficiency is high for the large particles, and low for the small particles
    Correct
  • C
    efficiency is same at equal charges
  • D
    the collection efficiency is high for the small particles, and low for the large particles
4
Particulate matter: i. smaller than 2 micrometer are trapped in nasal hair and bronchial mucus. ii. which reach the lung alveoli are not absorbed into the blood.
  • A
    statement ii) is correct but statement i) is wrong
  • B
    both the statements are correct
  • C
    both the statements are wrong
    Correct
  • D
    statement i) is correct but statement ii) is wrong.
5
Read the following statements: i. PAN & Ozone are secondary pollutants formed by reaction among primary pollutants. ii. conversion of primary pollutants into secondary pollutants reduces toxicity due to the phenomenon of synergism.
  • A
    both are wrong
  • B
    Statement ii) is wrong and i) is correct
    Correct
  • C
    both are correct
  • D
    Statement i) is wrong and ii) is correct
6
For blue baby syndrome : i. nitrate becomes a problem for human body when converted into nitrite. ii. changes Fe+++of Hb into Fe++ of MHb. iii. Clinical symptoms include cyanosis. iv. People of any age can suffer from blue baby disease.
  • A
    statements i, iii & iv are correct.
    Correct
  • B
    statements i, ii & iii are correct.
  • C
    statementsi,ii& iv are correct.
  • D
    all are correct.
7
There are two types of catalytic converters : a) 2-way catalytic converter treats only NOx and CO. b) 2-way catalytic converter treats hydrocarbons, NOx and CO
  • A
    statement a) is correct but statement b) is wrong.
  • B
    both the statements are wrong
  • C
    both the statements are correct
  • D
    statement b) is correct but statement a) is wrong.
    Correct
8
Planting trees on both the sides of roads and highways is called providing green muffler. It is to reduce :
  • A
    air pollution
  • B
    solid waste pollution
  • C
    noise pollution
    Correct
  • D
    soil pollution
9
irreparable computers and other electronic goods are known as
  • A
    e-wastes
    Correct
  • B
    soil wastes
  • C
    p-wastes
  • D
    m-wastes
10
Various methods applied for removing particulate pollutants from air employs:
  • A
    CNG and HFC
  • B
    Bioreactors and electrostatic precipitators
  • C
    methanogens and bioreactors
  • D
    activated charcoal and calcium hydroxide
    Correct