Practice test

Fuel and source of energy - Test Set 1

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    To avoid 'knocking' of the engine of a car, which one of the following is used as an anti-knocking agent?
    1. Ethyl alcohol
    2. Butane
    3. Tetraethyl Lead
    4. White Petrol
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  2. Question 2

    Diesel used in heavy vehicles for:
    1. High power and economic saving
    2. Extra mileage and save engine
    3. Low expense and save the fuel
    4. Being cheaper than low petrol
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  3. Question 3

    Which of the following is the by-product derived from the refining process of petroleum?
    1. Petrol
    2. Charcoal
    3. Coal
    4. Asphalt
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  4. Question 4

    Usually fuels on burning causes pollution. Which one of the following fuel causes minimum environmental pollution?
    1. Diesel
    2. Coal
    3. Hydrogen
    4. Kerosene
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  5. Question 5

    Addition of ethylene dibromide to petrol-
    1. increases the octane number of fuel
    2. helps elimination of lead oxide
    3. removes the sulphur compound in petrol
    4. serves as a substitute of tetraethyl lead
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  6. Question 6

    Why is water not suitable for putting out a petrol fire?
    1. The oxygen content of water is isolated by petrol and thus it helps in burning.
    2. Petrol is too inflammable to be extinguished by water.
    3. The heat required for combustion of petrol is very low.
    4. Water, being heavy, slips below petrol which thus remains in contact with air and burns.
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  7. Question 7

    In the context of alternative sources of energy, ethanol as a viable bio fuel can be attained from
    1. sugarcane
    2. potato
    3. rice
    4. wheat
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  8. Question 8

    Which of the following fuels causes minimum environmental pollution?
    1. Diesel
    2. Kerosene
    3. Hydrogen
    4. Coal
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  9. Question 9

    Which of the following processes, the crude petroleum substances undergo to obtain various hydrocarbons?
    1. Sublimation
    2. Fractional distillation
    3. Distillation
    4. Evaporation
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  10. Question 10

    The quality of petrol is expressed in terms of
    1. octane number
    2. gold number
    3. cetane number
    4. added unleaded compounds
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  11. Question 11

    To prevent from knocking the substance employed in the car engine is
    1. ethyl alcohol
    2. butane
    3. lead tetraethyl
    4. white petrol
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  12. Question 12

    Higher octane number but lower cetane number fuel is ideal for which of the following engines?
    1. Diesel engine
    2. Steam engine
    3. Heat engine
    4. Petrol engine
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  13. Question 13

    Which of the following fuels has calorific value equal to petrol?
    1. Methane
    2. Kerosene
    3. CNG
    4. LPG
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  14. Question 14

    The stench due to leakage from LPG cylinder is because of
    1. methane
    2. propane
    3. ethyl mercaptan
    4. butane
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  15. Question 15

    LPG is a mixture of ________ .
    1. butane and propane
    2. methane and butane
    3. methane and propane
    4. ethane and propane
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  16. Question 16

    How CNG is a cleaner fuel?
    I. It produces oxides of sulphur and Nitrogen in very small amounts.
    II. It makes environment less polluted.
    III.It emits less greenhouse gases.
    1. Only I and II
    2. Only II and III
    3. Only I and III
    4. I, II and III
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  17. Question 17

    Biogas is formed through
    1. fermentation
    2. oxidation
    3. aerobic respiration
    4. reduction
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  18. Question 18

    In the context of alternative sources of energy, ethanol as a viable bio-fuel can be obtained from
    1. potato
    2. sugarcane
    3. rice
    4. wheat
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  19. Question 19

    Air pollution is caused by smoke. Which of the following types of coal produces no smoke on burning?
    1. Peat
    2. Lignite
    3. Bituminous
    4. Anthracite
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  20. Question 20

    Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
    1. Hydrogen and oxygen
    2. Oxygen and acetylene
    3. Methane and air
    4. Carbon dioxide and methane
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