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Coal and Petroleum Test - 37

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Coal and Petroleum Test - 37
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  • Question 1
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    Which of these resources are in the danger of getting depleted with use?
    Solution
    Coal, petroleum, and natural gas are considered non-renewable because they cannot be replenished in a short period of time. A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames.
  • Question 2
    1 / -0
    Household gaseous fuel (LPG) is:
    Solution
    LPG is Liquified Petroleum Gas. It is a constituent of petroleum. 
  • Question 3
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    Natural gases are nothing but _______ .
    Solution
    Natural gas is a naturally occurring gas mixture consisting primarily of methane, but including higher alkanes and sometimes a small percentage of $$CO_2,N_2,H_2S$$ or helium.

    Whereas compressed natural gas is methane stored at high pressure. So, natural gas is nothing but CNG.

    Hence option A is correct.
  • Question 4
    1 / -0
    Cycling or walking is the method to conserve ___________ .
    Solution
    Cycle is a human-powered, pedal-driven, single-track vehicle. It needs muscular force to run, which is mechanical work. Walking also is a form of mechanical work. Both are used to conserve fuels as they avoid the use of vehicles that run on fuel.
  • Question 5
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    Cooking food by covering is the method to save _________.
    Solution
    Covering pans keeps the heat in the pan. Covered pans consume less energy than uncovered ones to cook same amount food. So, we can reduce the amount of LPG used. 

    LPG is a domestic fuel that is commonly used for cooking purposes. CNG is not used for cooking. BNG is not a fuel.
  • Question 6
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    If materials (resources) are finished then people will struggle for ______.
    Solution
    If resources are finished then people will struggle for both CNG and LPG as both are obtained from fossils. They cannot be replenished soon.

    Fossil Fuels are sources of energy that are formed from the accumulated remains of living organisms that were buried millions of years ago. 

    Hence, $$C$$ is the correct option.

  • Question 7
    1 / -0
    Possibility of occurrence of coal in an area, is determined by study of
    Solution
    • Microfossils are fossils that are generally between 0.001 mm and 1mm in size, the study of which requires the use of electron microscopy.
    • Coal, petroleum and natural gas are called fossil fuels because these were formed from the dead remains of living organisms (fossils).
    • Palaeobotany is the study of fossil plants. 
    • Hence the possibility of the occurrence of coal in an area,s determined by the study of microfossils (palaeobotany).
    • So, the correct answer is 'Microfossils'.
  • Question 8
    1 / -0
    To conserve materials (resources), it is necessary to use them in ________.
    Solution
    To conserve materials, it is necessary to use them in a limited amount.
    We need to use them judiciously for a sustainable environment. 
    The burning of these resources is a major cause of air pollution. Their use is also linked to global warming. It is, therefore, necessary that we use these fuels only when absolutely necessary. This will result in a better environment, a smaller risk of global warming, and their availability for a longer period of time.
  • Question 9
    1 / -0
    Going paperless is the way to conserve _______.
    Solution
    Worldwide, the use of paper has risen by $$400 \%$$ in the last $$40$$ years. This increased usage takes a huge fall on trees. Rapid deforestation- much of it to produce paper products – is a huge concern for our environment. Trees play a critical role in absorbing $$CO_2$$ from our atmosphere and producing oxygen to support life on our planet. 
  • Question 10
    1 / -0
    If fossil fuels will get exhausted, people will struggle for __________.
    Solution
    Fossil fuels have different uses. Fossil fuel like coal is used in thermal power plants to generate electricity. If fossil fuels get exhausted, people will struggle for electricity. Fresh air and water are naturally available and are not dependent on fossil fuels.
    Hence, the correct option is A.
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