CBSE  /  Class 11  /  Chemistry  /  Hydrocarbons

  • 1. 
    The angle strain in cyclobutane is

  • 24°44
  • 29°16
  • 19°22
  • 9°44

  • 2. 
    The first fraction obtained during the fractionation of petroleum is:

  • Gasoline
  • Diesel Oil
  • Hydrocarbon Gases
  • Kerosene Oil

  • 3. 
    2 – Phenylpropene on acidic hydration gives

  • 2 – Phenyl – 2 – propanol
  • 2 – Phenyl – 1 – propanol
  • 3 – Phenyl – 1 – propanol
  • 1 – Phenyl – 2 – propanol

  • 4. 
    The coal tar fraction which contains phenol is:

  • Heavy Oil
  • Light Oil
  • Middle Oil
  • Green Oil

  • 5. 
    Which one of these is not true for benzene?

  • There are three carbon-carbon single bonds and three carbon-carbon double bonds.
  • Heat of hydrogenation of benzene is less than the theoretical value
  • It forms only one type of mono substituted product
  • The bond angle between carbon-carbon bonds is 120 Degree

  • 6. 
    The catalyst used in Friedel – Crafts reaction is

  • Aluminium Chloride
  • Anhydrous Aluminium Chloride
  • Ferric Chloride
  • Copper .

  • 7. 
    Alkyl halides react with dialkyl copper reagents to give?

  • Alkanes
  • Alkenes
  • Hydrogen
  • Carbon

  • 8. 
    The lowest alkene, that is capable of exhibiting geometrical isomerism is

  • Ethene
  • But – 1- ene
  • But – 2 – ene
  • Propene.

  • 9. 
    Presence of a nitro group in a benzene ring

  • Activates the ring towards electrophilic substitution
  • Renders the ring basic
  • Deactivates the ring towards nucleophilic substitution
  • Deactivates the ring towards electrophilic substitution
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