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Combustion and ...

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  • Question 1
    1 / -0

     Which of the following does not represent characteristic of a good fuel?

  • Question 2
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       How has the use of CNG in automobiles reduced the pollution in cities?

  • Question 3
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     Read the given statements and select the correct option.

    Statement 1: Phosphorus burns in air at room temperature.

    Statement 2: It is an example of spontaneous combustion.

  • Question 4
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     Colours of flame produced by kerosene lamp, candle and Bunsen burner are respectively

  • Question 5
    1 / -0

     Global warming leads to a rise in the sea level causing floods in the coastal areas. One of the main reasons of global warming is

  • Question 6
    1 / -0

     Read the given statements and select the correct options.

    Statement 1: Kerosene oil and wood do not catch fire on their own at room temperature.

    Statement 2: A combustible material cannot catch fire as long as its temperature is lower than its ignition temperature.

  • Question 7
    1 / -0

    What is the principle of soda fire extinguisher?

  • Question 8
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     Match column I with column II and select the correct option from the codes given below.

    Column I Column II
    P. Rusting (i) Explosion
    Q. Burning of Paper (ii) Spontaneous combustion
    R. Sodium (iii) Rapid combustion
    S. Fire crackers (iv) Slow combustion

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