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Combustion and ...

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  • Question 1
    1 / -0

    A thin paper cup filled with water does not catch fire when placed over a flame. This is because:

  • Question 2
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    The cooking gas burns rapidly and produces heat and light. Such combustion is called _________.

  • Question 3
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    Which of the following example represents spontaneous combustion?

  • Question 4
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    Which of the following examples represents explosion?

  • Question 5
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    If you watch a burning candle carefully, you will find different colurs in the flame. Which is the hottest part of the candle flame?

  • Question 6
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    Explosion of crackers takes place due to application of _________ on them.

  • Question 7
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    When fuel is added to the exhaust (burnt) gases in a jet engine combustion takes place. Some facts are mentioned here about this combustion. Pick the false one?

  • Question 8
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    A white solid $$X$$ reacts with dil.$$HCl$$ to give colourless gas which is used in fire extinguishers. The solid $$X$$ is:

  • Question 9
    1 / -0

    If butane on combustion gives carbon monoxide, find the number of $$O_ 2$$ molecules required.

  • Question 10
    1 / -0

    Gobar gas contains mainly:

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