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Question

Choose the incorrect statement.


A

All liquids have their boiling point at 100oC

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B

Liquids can be converted to solid state below their freezing point.

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C

Washing clothes is a slow change.

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D

Evaporation can occur at any temperature.

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Solution

The correct option is A

All liquids have their boiling point at 100oC


  • All liquids do not have boiling point at 100oC. It is only water which boils at 100oC and at atmospheric pressure.
  • Every liquid has a unique freezing point, below which its state changes to solid.
  • We wash clothes to remove dirt and grime. For this, we add soap/detergent and wash them for a considerable time.
  • Evaporation is a process which happens only at the surface of a liquid. It can occur at any temperature.

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