Class 8 Coal And Petroleum CBSE Questions & Answers

Class 8 · Coal And Petroleum

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

Questions & Answers

1
In petroleum well, crude oil is found :
  • A
    all the above
  • B
    above water
    Correct
  • C
    below water
  • D
    mixed with water
2
That gas produced by burning of fossil fuels which is itself highly poisonous:
  • A
    Chlorofluorocarbons
  • B
    Carbon monoxide
    Correct
  • C
    Carbon dioxide
  • D
    Carbonic acid
3
Read the following statements :i) Coke is a by product formed during processing of coal to form coal gas.ii) Coal gas is used as a fuel in the coal processing plant.
  • A
    both are wrong
  • B
    statement i) is correct but ii) is wrong
  • C
    statement ii) is correct but i) is wrong
    Correct
  • D
    both are correct
4
Naphthalene balls used to repel insects and moths are obtained from :
  • A
    Coal tar
    Correct
  • B
    CNG
  • C
    Coke
  • D
    Coal gas
5
Read the following statements :i) Coal is a mineral of plant origin.ii) Process of conversion of dead vegetation into coal is called condensation.
  • A
    both are correct
  • B
    statement i) is correct but ii) is wrong
    Correct
  • C
    statement ii) is correct but i) is wrong
  • D
    both are wrong
6
Process of heating coal in the absence of oxygen is called :
  • A
    fractional distillation
  • B
    destructive condensation
  • C
    destructive distillation
    Correct
  • D
    carbonisation
7
Fraction of petroleum used for surface roads is :
  • A
    betumen
  • B
    lubricating oil
  • C
    petroleum gas
  • D
    bitumen
    Correct
8
Nowadays, a petroleum product is used for medalling roads in place of previously used material, they are:
  • A
    coal tar and bitumen respectively
  • B
    bitumen and coal tar respectively
    Correct
  • C
    lubricating oil and bitumen respectively
  • D
    bitumen and lubricating oil respectively
9
Read the following statements :i) Natural gas is easy to be transported through pipes.ii) It occurs below the surface of petroleum deposits.
  • A
    statement i) is correct but ii) is wrong
    Correct
  • B
    both are correct
  • C
    statement ii) is correct but i) is wrong
  • D
    both are wrong
10
Natural gas contains only traces of :
  • A
    methane
  • B
    ethane
  • C
    propane
  • D
    both ethane & propane
    Correct
11
Read the following statements :i) Bituminous coal is used to produce coke.ii) It contains a lot of moisture.
  • A
    statement i) is correct but ii) is wrong
    Correct
  • B
    both are wrong
  • C
    statement i) is correct but ii) is wrong
  • D
    both are correct
12
Natural gas is formed by decomposition of vegetation by :
  • A
    anaerobic bacteria
    Correct
  • B
    aerobic bacteria
  • C
    high pressure
  • D
    high temperature
13
Read the following statements :i) Crude oil is free of impurities like salt, rock particles and water.ii) Crude oil is stored in big containers called oil tanks.
  • A
    both are wrong
  • B
    both are correct
  • C
    statement i) is correct but ii) is wrong
  • D
    statement ii) is correct but i) is wrong
    Correct
14
To save petrol/diesel while driving we must:
  • A
    drive at a very fast speed
  • B
    drive for a longer period of time
  • C
    drive at a very slow speed
  • D
    drive at a moderate speed
    Correct
15
Read the following statements :i) Car pool is useful to save natural resources.ii) Regular maintenance of vehicles helps to save fuel.
  • A
    statement ii) is correct but i) is wrong
  • B
    both are wrong
  • C
    statement i) is correct but ii) is wrong
  • D
    both are correct
    Correct