1. Irreversible changes are those which cannot be reversed i.e. the properties of the object cannot be reversed to the one it had before changing.

    Irreversible changes are those which cannot be reversed i.e. the properties of the object cannot be reversed to the one it had before changing.

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  2. (i) Melting of ice (ii) Evaporation and condensation (iii) Drying of clothes (iv) Heating milk (v) Inflating balloon (vi) Rolling a chapati.

    (i) Melting of ice
    (ii) Evaporation and condensation
    (iii) Drying of clothes
    (iv) Heating milk
    (v) Inflating balloon
    (vi) Rolling a chapati.

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  3. The process of separating particles of an insoluble solid from the liquid using fine pores of a sieve or filter paper.

    The process of separating particles of an insoluble solid from the liquid using fine pores of a sieve or filter paper.

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