Chemistry-11-Chemical Reactions

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1.
Which among the following is an example of a Chemical Change?
2.
Which among the following happens in an oxidation reaction ?
3.
What happens to the weight of Iron, when it rusts?
4.
What is the primary event that occurs during an oxidation reaction?
5.
Which gas is produced when an alkali metal, like Lithium or Sodium, reacts with water?
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