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Combustion and ...

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  • Question 1
    1 / -0

    Shyam was cooking potato curry on a chulha. To his surprise, he observed that the copper vessel was getting blackened from outside. It may be due to:

  • Question 2
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    We cannot use a fire extinguisher that involves _____ as an extinguishing substance.

  • Question 3
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    Coke is a _______ fuel.

  • Question 4
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    Oxygen is a _____ gas.

  • Question 5
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    Unburnt carbon particles are present in the:

  • Question 6
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    What kind of combustion is undergone by ignition of a cracker?

  • Question 7
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    Which among the following is considered as the cleanest fuel?

  • Question 8
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    Which of the following is not required for combustion to take place?

  • Question 9
    1 / -0

    During combustion of gaseous fuels, deficiency of air ___________.

  • Question 10
    1 / -0

    Higher efficiency in the combustion of solid fuel cannot be achieved by __________.

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