PDF chapter test TRY NOW
Give one example in each case.
(a) Change which occurs on mixing two substances but can be reversed.
(b) Change which occurs on mixing two substances but cannot be reversed.
(b) Change which occurs on mixing two substances but cannot be reversed.
Answer variants:
Baking of cake
Heating of an iron rod
Formation of ice from water
Formation of salt solution
Mixing of cement with water
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