1. [C] Selective reabsorption The dialyser functions as kidney but does not perform selective reabsorption.

    [C] Selective reabsorption
    The dialyser functions as kidney but does not perform selective reabsorption.

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  2. [C] (i) and (iv) In beakers A and B, heat is given, so the temperature of the solution rises, so it is an exothermic reaction whereas in beaker C the heat is absorbed by the water, hence the temperature drops, so it is an endothermic process.

    [C] (i) and (iv)
    In beakers A and B, heat is given, so the temperature of the solution rises, so it is an exothermic reaction whereas in beaker C the heat is absorbed by the water, hence the temperature drops, so it is an endothermic process.

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  3. [C] All the colours do not travel with the same speed of light.

    [C] All the colours do not travel with the same speed of light.

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  4. When two or more elements are mixed in such a way that they do not lose their property is known as mixture.

    When two or more elements are mixed in such a way that they do not lose their property
    is known as mixture.

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