which oneof the follwing is not a physical change melting of wax ,tearing a piece of paper,digestion of food ,dissolution of salt in water
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digestion of food is not a physical change
digestion is irreversible process in which new products are formed.
Melting of wax is both physical and chemical change
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melting of wax is the answer
pathak13:
how can u tell that melting of wax is not a physical change
it is both physical and chemical change
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