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Chemistry · 2026 · 2 marks
Haloalkanes and HaloarenesChemical Reactions of Haloalkanes and Haloarenes2 marksApplyvery short answer
CBSE 2026 · Region 2 · Set 3 · Q21
(a) Write the major product in the following reaction: (b) What happens when 2-Bromobutane is made to react with alcoholic potassium hydroxide?
(a)
Write the major product in the following reaction :
(b)
What happens when $\displaystyle 2$-Bromobutane is made to react with alcoholic potassium hydroxide ?
Marking-scheme solution
(a)
(b)
/ But-$\displaystyle 2$-ene is formed
Or CH2=CH-CH2-CH3 + KCl + H2O / But-$\displaystyle 1$-ene is formed
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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.