A) (i) is a chemical change, (ii) is a physical change
B) (i) is a physical change, (ii) is a chemical change
C) Both (i) and (ii) are physical changes
D) Both (i) and (ii) are chemical changes
Correct Answer: A
Solution :
Formation of water by reaction of hydrogen and oxygen is a chemical change. Change of liquid water to water vapour is a physical change.
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