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
Destructive distillation of carbon is carried out in :
  • A
    absence of air
    Correct
  • B
    presence of air
  • C
    excess of carbon dioxide
  • D
    polluted environment
2
Coke is useful in the production of :
  • A
    PVC
  • B
    water gas
  • C
    producer gas
  • D
    all of these
    Correct
3
The component of coal which can be used for manufacturing steel is :
  • A
    Coal tar
  • B
    Charcoal
  • C
    Coke
    Correct
  • D
    Coal gas
4
Naphthalene balls can be obtained from :
  • A
    Coke
  • B
    Coal tar
    Correct
  • C
    Ammoniacal liquor
  • D
    Coal gas
5
The category of coal which is better known as brown coal is:
  • A
    lignite
    Correct
  • B
    bituminous
  • C
    magnetite
  • D
    anthracite
6
Petroleum is also known as :
  • A
    rock oil
  • B
    all of these
    Correct
  • C
    black gold
  • D
    crude oil
7
Natural gas widely used in automobiles is :
  • A
    CNG
    Correct
  • B
    PTNG
  • C
    LPG
  • D
    MNG
8
A better alternative to conventional fossil fuel usage as domestic fuel is use of :
  • A
    Coke
  • B
    petroleum gas
  • C
    biogas
    Correct
  • D
    Coal gas
9
The constituent of petroleum used in ointments is :
  • A
    kerosene
  • B
    Ammoniacal liquor
  • C
    paraffin wax
    Correct
  • D
    lubricating oil
10
Process of separating petroleum constituents is called :
  • A
    depositing
  • B
    refining
    Correct
  • C
    cleaning
  • D
    filtration
11
Wastage and atmospheric pollution occurs if fuel undergoes :
  • A
    complete combustion
  • B
    mixing with lead
  • C
    both incomplete combustion & complete combustion
  • D
    incomplete combustion
    Correct
12
Oil deposits are formed in the :
  • A
    non porous rock sediments
  • B
    both porous rock sediments & non porous rock sediments
  • C
    porous rock sediments
    Correct
  • D
    coal mines
13
Coal is non renewable energy source because :
  • A
    coal is readily combustible so burns and is lost quickly
  • B
    coal takes millions of years to get formed
    Correct
  • C
    coal is a fossil fuel so needs death of organisms
  • D
    Burning of coal produces harmful gases
14
Coal gas can be used as a reducing agent due to presence of :
  • A
    methane
  • B
    water
  • C
    hydrogen
    Correct
  • D
    oxygen
15
Main product on complete combustion of coal is :
  • A
    methane
  • B
    carbon dioxide
    Correct
  • C
    bicarbonates
  • D
    carbon monoxide