1. Which of these is an irreversible change?
a. Melting of chocolate
b. Breaking of glass
c.Boiling of water
d.condensation of steam
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Some examples of irreversible changes are burning of paper, Burning of fuels (like Wood, Coal and LPG), Cooking of food, Rusting of iron , Grinding of wheat grains into flour, Baking of chapatti (roti), Growth of a plant, Formation of flower from bud, Falling of leaves from a tree, Ripening of fruits, Ageing of man and ...
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