1. Reduction means addition of hydrogen or removal of oxygen from a substance.

    Reduction means addition of hydrogen or removal of oxygen from a substance.

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  2. Zinc is more reactive than hydrogen, so zinc will displace hydrogen from dilute H₂S₄ in the form of hydrogen gas.

    Zinc is more reactive than hydrogen, so zinc will displace hydrogen from dilute H₂S₄ in the form of hydrogen gas.

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  3. Oxidation means addition of oxygen or removal of hydrogen from a substance.

    Oxidation means addition of oxygen or removal of hydrogen from a substance.

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  4. A thick suspension of slaked lime in water is used for whitewashing of buildings. It is also used for removing temporary hardness of water.

    A thick suspension of slaked lime in water is used for whitewashing of buildings. It is also used for removing temporary hardness of water.

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