CBSE Class 12 History Question Paper 2016 with Answer Key (March 8, Set 1 - 61/1/1)

CBSE CLASS XII Questions

• 1.

  Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

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• 2.

  Write mechanism of acid dehydration of ethanol to ethene.

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• 3.

  Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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• 4.

  Draw the structures of major products: (a) Chlorobenzene + $CH_3Cl$ / Na, dry ether
  (b) p-Hydroxyphenethyl alcohol + HBr

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• 5.

  Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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• 6.

  Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

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