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Question

Tick (✓) the most appropriate answer.

In which of the following formation of substances need energy change necessarily?


A

Element

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B

Compound

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C

Mixture

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D

All of these

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Solution

The correct option is B

Compound


  • When one or more atoms of the same or different elements combine with each other chemically, a compound is formed.
  • For example - Water, Sugar, Sodium chloride, etc.
  • As a chemical compound involves a chemical bond formation. Hence, energy change takes place.
  • Hence option B is correct.

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