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The given graph represents the cooling c...

The given graph represents the cooling curve of substance X.
Which of the following statements are incorrect?

I. Process I represents cooling of liquid state of X while process III involves cooling of the solid state.
II. The freezing point of substance X is `25^@C`.
III. At `35 ^@C`, the substance exists in solid state.
IV. Substance X exists both in gaseous and liquid form along the curve QR.

A

I and III only

B

II and IV only

C

III and IV only

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Process I represents cooling of gaseous state of X while process III involves cooling of solid state of substance X.
At `35^@C`, substance X exists in liquid state.
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