1. [C] zinc is more reactive than Tin Food cans are coated with tin and not with zinc because zinc is more reactive than tin.

    [C] zinc is more reactive than Tin
    Food cans are coated with tin and not with zinc because zinc is more reactive than tin.

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  2. (B) Cellulose, hemicellulose, pectin The plant cell wall is made up of cellulose, hemicellulose and pectin.

    (B) Cellulose, hemicellulose, pectin
    The plant cell wall is made up of cellulose, hemicellulose and pectin.

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  3. [A] nucleus, mitochondria and plastids In a cell, DNA is found in nucleus, mitochondria and plastids.

    [A] nucleus, mitochondria and plastids
    In a cell, DNA is found in nucleus, mitochondria and plastids.

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