1.

Which of the following is a physical and reversible change?(a) heating of iron and sulphur to form iron sulphide(b) melting of ice to form water(c) weathering of rocks(d) cooking of rice

Answer» Which of the following is a physical and reversible change?

(a) heating of iron and sulphur to form iron sulphide

(b) melting of ice to form water

(c) weathering of rocks

(d) cooking of rice


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