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Chemistry · 2026 · 2 marks
CBSE 2026 · Region 1 · Set 3 · Q17
What type of deviation is shown by a mixture of chloroform and acetone from Raoult's law? Give reason. What will happen to the boiling point of the…
What type of deviation is shown by a mixture of chloroform and acetone from Raoult's law ? Give reason. What will happen to the boiling point of the solution on mixing chloroform and acetone ?
Marking-scheme solution
• Negative deviation
• Due to the formation of hydrogen bonding between chloroform and
acetone molecules which is stronger than interactions present between
chloroform-chloroform and acetone-acetone.
• Boiling point of the solution increases.
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CBSE Class 12 Chemistry past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.