CBSE  /  Class 11  /  Chemistry  /  Hydrocarbons

  • 1. 
    The position of double bond in alkenes can be located by :

  • Hydrogenation of oil
  • Ozonolysis
  • Photolysis
  • Hydration

  • 2. 
    Nitrobenzene on reaction with conc. HNO/HSO

  • 1, 2-Dinitrobenzene
  • 1, 3-Dinitrobenzene
  • 1, 4-Dinitrobenzene
  • 1, 2, 4-Trinitrobenzene

  • 3. 
    Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

  • –C ≡ N
  • -SO
  • -COOH
  • -NO

  • 4. 
    Which of the following compounds will exhibit geometrical isomerism?

  • 1 – Phenyl – 2 – butene
  • 3 – Phenyl – 1 – butene
  • 2 – Phenyl – 1 butene
  • 1, 1 – Diphenyl – propene .

  • 5. 
    The order of decreasing reactivity towards an electrophilic reagent, for the following : (i) Benzene (ii) Toluene (iii) Chlorobenzene (iv) Phenol would be:

  • (i) > (ii) > (iii) > (iv)
  • (ii) > (iv) > (i) > (iii)
  • (iv) > (iii) > (ii) > (i)
  • (iv) > (ii) > (i) > (iii)

  • 6. 
    Pure methane can be prepared by

  • Soda lime decarboxylation
  • Kolbes electrolytic method
  • Wurtz reaction
  • Reduction with H

  • 7. 
    Hydrocarbon containing following bond is most reactive

  • C ≡ C
  • C = C
  • C-C
  • All of these

  • 8. 
    The compound CH

  • Bromine water
  • Bayers reagent
  • Fehling solution
  • Ammonical silver nitrate

  • 9. 
    Isopropyl bromide on Wurtz reaction gives

  • Hexane
  • Propane
  • 2, 3 – Dimethylbutane
  • Neohexane

  • 10. 
    Nitrobenzene on reaction with conc. HNO/HSO

  • 1, 2-Dinitrobenzene
  • 1, 3-Dinitrobenzene
  • 1, 4-Dinitrobenzene
  • 1, 2, 4-Trinitrobenzene
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