Haloalkanes and Haloarenes Three Marks Questions

11th Standard

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    10 x 3 = 30
  1. An organic compound (A) with molecular formula C2H5Cl reacts with KOH gives compounds (B) and with alcoholic KOH gives compound (C). Identify (A),(B), and (C)

  2. Simplest alkene (A) reacts with HCl to form compound (B).Compound (B) reacts with ammonia to form compound (C) of molecular formula C2H7N.Compound (C) undergoes carbylamine test. Identify (A), (B), and (C)

  3. A hydrocarbon C3H6 (A) reacts with HBr to form compound (B). Compound (B) reacts with aqueous potassium hydroxide to give (C) of molecular formula C3H6O.what are (A) (B) and (C). Explain the reactions.

  4. Two isomers (A) and (B) have the same molecular formula C2H4Cl2. Compound (A) reacts with aqueous KOH gives compound (C) of molecular formula C2H4O. Compound (B) reacts with aqueous KOH gives compound(D) of molecular formula C2H6O2. Identify (A), (B), (C) and (D).

  5. Enlist the applications of haloalkanes.

  6. Among ortho, meta and para substituted diahalobenzenes which has high melting point? Give reason with example.

  7. Write the possible isomers for the formula C4H9Cl with structures and names.

  8. Explain ammonolysis of haloalkanes. (or) How excess of haloalkane react with alcoholic ammonia?

  9. Explain how bromo ethane reacts with
    (i) alcoholic KCN
    (ii) alcoholic AgCN

  10. Compare the bond length C-X in haloarenes and C-X in haloalkanes

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