a
Burning kerosene
b
Freezing ice cream
c
Exposing white phosphorus
d
Dissolving calcium in water
Explanation
Correct Option
bVideo Explanation
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coded114
11 years ago
exposing white phosphorus results in combustion,and cannot be reversed same goes for burning kerosene.so freezing ice cream is d only physical change,since no new subs. is formed and d process can b reversed.
