Q.

One of the following does not happen during a chemical reaction. This is

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a

Atoms of one element change into those of another element to form new products energy does not released or absorbed

b

Formation of new substances with entirely different properties

c

Breaking of old chemical bonds and formation of new chemical bonds

d

A rearrangement of atoms involve a chemical reaction

answer is C.

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Detailed Solution

Because chemical reaction takes place in proper steps. Generally energy is absorbed or released in chemical reactions.
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