Question

Which one of the following statement is not true?

• A. The molecules in a solid vibrate about a fixed position
• B. The molecule of a gas occupy all the space available
• C. The molecule in a liquid are arranged in a regular pattern
• D. The molecules in a gas exert negligibly small forces on each other, except during collision

Answer 1

The correct option is C

The molecule in a liquid are arranged in a regular pattern

Explanation for correct option:

• Molecules have arrangements,
• In gas are well separated with no regular arrangements.
• In liquid are close together with no regular arrangement.
• In solid are tightly packed, usually in a regular pattern.

Explanation for wrong options:

Option A:

• The molecules in solid vibrate in a fixed position as the molecules are held close to one another due to the strong intermolecular forces between them.
• Hence they have definite shape and volume.

Option B:

• The molecules of gas occupy all the space available as the molecules are in constant motion they move freely as they have large intermolecular space between them.

Option D:

• The molecules in a gas exert negligibly small forces on each other, except during collision because they have negligible intermolecular forces except during collision.

Therefore Option C is correct option. i.e The molecule in a liquid are arranged in a regular pattern