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Coal and Petroleum Test - 40

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Coal and Petroleum Test - 40
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Fossil fuels are burnt to _________
    Solution
    • Fossil fuels are burnt to generate electricity and in power transportation.
    • Hence it is burnt to run vehicles and during cooking in households.
    • When fossil fuels burns they produce nitrogen oxide which contributes in the formation of smog and acid rain.

    \therefore Option DD is correct.


  • Question 2
    1 / -0
    Coal gas is a mixture of:
    Solution
    Coal gas is the mixture of  Hydrogen , Methane and Carbon monoxide.
  • Question 3
    1 / -0

    Directions For Questions

    Gaseous fuel have become very popular these days. The following are the advantages of gaseous fuels.
    1. They have high calorific value.
    2. They do not produce smoke and leave no ash after combustion
    3. Gaseous fuels can flow through pipes and can be ignited at a moment's notice at any place. No special devices are required for their combustion
    4. Coal gas is a good gaseous fuel as it contains 95% combustible gaseous such as hydrogen, methane, carbon monoxide, etc. It is obtained by destructive distillation of coal at about 1000oC1000^oC.
    5.  Water gas which is essentially a mixture of hydrogen and carbon monoxide is prepared by passing steam over incandescent coke. The reaction is however endothermic.
    6.  Producer gas which possesses lowest calorific value is prepared by passing air over red hot coke. It contains mainly nitrogen and carbon monoxide.
    7. Semiwater gas is a mixture of water gas and producer gas.
    8. Oil gas which is used in laboratories is obtained by cracking of kerosene. It is a mixture of hydrocarbons (saturated and saturated ) mainly lower hydrocabon. LPGLPG (liquefied petroleum gas), which contains C3C_3 and C4C_4 hydrocarbons of the alkane and alkane series supplied in cylinders for domestic uses is very popular these days.

    ...view full instructions

    Which one is the best fuel?
    Solution
    LPG (liquefied petroleum gas), which contains C3C_3 and C4C_4 hydrocarbons of the alkane and alkane series supplied in cylinders for domestic uses is very popular these days.
    The correct option is D. 
  • Question 4
    1 / -0
    Gasoline has composition:
    Solution
    The approximate composition of gasoline is C6C11C_6 - C_{11} at boiling point 70200oC70-200^oC and is used in motor fuel, dry cleaning, petrol gas etc.
  • Question 5
    1 / -0
    Which of the following are produced from coal tar?
    Solution
    Coal tar is a thick black liquid that is a by-product of the production of coke. Coal tar is used to make synthetic dyes, drugs, and perfumes purposes. Hence option D is correct.
  • Question 6
    1 / -0
    Which of the following is obtained at lowest temperature by fractional distillation of petroleum?
    Solution
    Crude oil is a mixture of a large number of compounds. These compounds are not chemically combined therefore they can be separated by fractional distillation where fractions of crude oil are separated on the basis of their boiling points by heating them to a temperature at which one or more fractions of the compound will vaporize.
    These fractions are hydrocarbon compounds with a large number of carbons. The boiling point of these compounds depends upon their molecular mass as their intermolecular force of attraction is very low. 
    Fractions having a lower boiling point are separated first than the higher boiling points.
    On increasing the temperature fraction by fraction the mixture of products is obtained.
    The fractions of gasoline, diesel oil, kerosene, propane, and butane, lubricating oil, paraffin wax, etc. are obtained at different temperatures which can be seen in the image. 
    So the correct option is  CC.

  • Question 7
    1 / -0
    Fractional distillation is the process of separation of:
    Solution
    Fractional distillation is the process of separating two miscible liquids by distillation, the distillate is collected in fractions boiling at different temperatures. The liquid having a lower boiling point distils first and the liquid having a higher boiling point distils over later.
  • Question 8
    1 / -0
    The inorganic origin of petroleum is indicated by the fact that
    Solution
    Abiogenesis-inorganic origin of petroleum is the oldest theory which suggests that petroleum comes from the underneath part of the mantle very long time ago before the existence of life on earth. Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons. 
  • Question 9
    1 / -0
    Mark the right statement about coal: 
    Solution
    Coal is made after a long period of decomposition of plants, trees, deep beneath the surface of the earth., The time it takes to form coal is approximately 300 years. It's a fossil fuel as it's formed from fossils of plants and animals. It's an inexhaustible natural resource as only a limited amount of it is present beneath the earth's surface.
  • Question 10
    1 / -0
    Air is a natural resource and cannot be exhausted by human activities. It is known as an inexhaustible natural resource. Which of the following is another inexhaustible natural resource?
    Solution
    Sunlight is another inexhaustible natural resource that means it cannot be exhausted by human activities whereas coal, petroleum, and minerals can be exhausted by human activities.
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