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Pieces of wood burn faster than a log of...

Pieces of wood burn faster than a log of wood of the same mass because

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Pieces of wood have larger surface area than the log of wood of the same mass. Greater the surface area, faster is the reaction.
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Knowledge Check

  • Burning of wood and coal causes ____

    A
    Combustion
    B
    Ignition
    C
    Burning
    D
    Pollution

  • A piece of wood floats in water kept in a beaker . If the beaker moves with a vertical acceleration 'a' , the wood will

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    C
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    D
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  • A piece of wood is floating in water. If we heat the water, the piece of wood will

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    increase in size
    B
    rise a little
    C
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    D
    sink a little

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