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Science M.C.Q. [I MARKS]

Coal and Petroleum · Bihar Board (BSEB) STD 8 (BSEB - English Medium). 12 questions.

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M.C.Q. [I MARKS]

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12 questions · timed · auto-graded

MCQ 11 Mark
Which of the following is used as a reducing agent in the extraction of iron metal?
  • A
    Coal
  • B
    Bitumen
  • C
    Charcoal
  • ✓
    Coke
Answer
Correct option: D.
Coke
Explanation:
Coke is a tough, porous and black substance. It is almost pure form of carbon. It is used as a reducing agent in the extraction of metals. It is used in the manufacture of steel and in the extraction of many metals.
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MCQ 21 Mark
The major component of $LPG$ is:
  • A
    Hydrogen
  • B
    Carbon monoxide
  • C
    Methane
  • ✓
    Butane
Answer
Correct option: D.
Butane
The full form of $LPG$ is Liquefied petroleum gas. It is also referred as propane or butane. It is flammable and is used as fuel in heating appliances, cooking equipment and vehicles.
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MCQ 31 Mark
One of the following is not an exhaustible source of energy. This one is:
  • A
    Natural gas
  • B
    Petroleum gas
  • C
    Coal gas
  • ✓
    Biogas
Answer
Correct option: D.
Biogas
Explanation:
Biogas can be produced from raw materials such as agricultural waste, manure, plant material, green waste or food waste. It is a renewable source of energy. Natural gas, coal gas and petroleum gas are fossil fuels and are nonrenewable sources of energy.
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MCQ 41 Mark
Which is the major component of $CNG?$
  • A
    Ethane
  • B
    Propane
  • ✓
    Methane
  • D
    Butane
Answer
Correct option: C.
Methane
$CNG$ consists primarily of methane but also contains ethane, propane and heavier hydrocarbons. It also contains small amounts of nitrogen, carbon dioxide, hydrogen sulphide and very little amount of water.
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MCQ 51 Mark
Which one of the following is not a fossil fuel?
  • A
    Petrol
  • B
    Coke
  • ✓
    Charcoal
  • D
    Coal
Answer
Correct option: C.
Charcoal
Explanation:
Charcoal is mostly pure carbon which is made by cooking wood in a low oxygen environment. This process can take days and burns off volatile compounds such as water, methane, hydrogen, and tar.
Petrol, coke and coal are fossil fuels which are formed from the dead remains of living organisms or fossils.
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MCQ 61 Mark
The slow process by which the large land plants and trees buried deep under the earth have become coal is called:
  • A
    Carbonation
  • B
    Carburation
  • ✓
    Carbonisation
  • D
    Carbocation
Answer
Correct option: C.
Carbonisation
Explanation:
Carbonisation is the process by which plant material or vegetation buried deep under the earth was slowly converted into coal. Since, coal was formed from the remains of vegetation, it is also known as fossil fuel.
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MCQ 71 Mark
Which of the following is being used as a source of hydrogen gas needed to manufacture fertilisers?
  • A
    Biogas
  • ✓
    Natural gas
  • C
    Coal gas
  • D
    Petroleum gas
Answer
Correct option: B.
Natural gas
The full form of $CNG$ is compressed natural gas. Natural gas is a very important fossil fuel because it is easy to transport through pipes. It can be used as a fuel in homes and factories. It is also used as a starting material for the manufacture of a number of chemicals and fertilizers.
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MCQ 81 Mark
Which of the following is not obtained as a fraction during the refining of petroleum?
  • A
    Kerosene
  • ✓
    Natural gas
  • C
    Lubricating oil
  • D
    Bitumen
Answer
Correct option: B.
Natural gas
Explanation:
Natural gas is a fossil fuel other than coal and petroleum. Petroleum can be extracted with giant drilling machines. The layer containing petroleum oil and natural gas is above that of water.
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MCQ 91 Mark
Which of the following is usually referred to as ‘black gold’?
  • A
    Coke
  • B
    Coal tar
  • ✓
    Petroleum
  • D
    Coal
Answer
Correct option: C.
Petroleum
Explanation:
Many useful substances are obtained from petroleum and natural gas. These are termed as ‘Petrochemicals’. Due to its great commercial importance, petroleum is also called ‘black gold’.
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MCQ 101 Mark
The various compounds present in coal tar are separated by the process of:
  • A
    Simple distillation.
  • B
    Destructive distillation.
  • ✓
    Fractional distillation.
  • D
    Fractional crystallisation.
Answer
Correct option: C.
Fractional distillation.
Coal tar is a mixture of about $200$ substances. It is a black, thick liquid with unpleasant smell. Synthetic dyes, drugs, perfumes, plastics and paints. Naphthalene balls used to repel moths and other insects are also obtained from coal tar.
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MCQ 111 Mark
The gas which occurs above the petroleum oil trapped under the rocks is called:
  • A
    Biogas
  • B
    Petroleum gas
  • ✓
    Natural gas
  • D
    Coal gas
Answer
Correct option: C.
Natural gas
Explanation:
Petroleum can be extracted from under the sea bed. It can be extracted with giant drilling machines. The layer containing petroleum oil and gas is above that of water.
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MCQ 121 Mark
Which one of the following is an inexhaustible natural resource?
  • A
    Coal
  • B
    Petroleum
  • ✓
    Water
  • D
    Forests
Answer
Correct option: C.
Water
Explanation:
Water is an inexhaustible natural resource because it is available abundantly in nature.
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