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Question

Which description fits best for a gas.


A

Definite shape and volume; strong intermolecular attractions

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B

Definite volume and shape; moderate intermolecular attractions

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C

Definite volume and shape; weak intermolecular attractions

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D

Volume and shape are not definite; negligible intermolecular attractions

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Solution

The correct option is D

Volume and shape are not definite; negligible intermolecular attractions


Explanation for correct option :

  • The Gaseous particles are far away from each other and have large empty spaces between them and that is why they don’t have fixed volume and shape and no intermolecular forces of attraction between the molecules of a gas.
  • Solids have fixed shapes and volumes with strong intermolecular forces of attraction.
  • Liquids have no fixed shape but fixed volume with moderate forces of attraction.

Therefore, option D is correct.


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