CBSE  /  Class 11  /  Chemistry  /  Organic Chemistry: Some Basic Principles and Techniques

  • 1. 
    Which one of the following conformations of cyclohexane is chiral?

  • Twist boat
  • Rigid
  • Chair
  • Boat

  • 2. 
    If 0. 228 g of silver salt of dibasic acid gave a residue of 0. 162 g of silver on ignition then molecular weight of the acid is

  • 70
  • 80
  • 90
  • 100

  • 3. 
    If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral, it may mean that

  • The compound may be a racemic mixture
  • The compound is certainly a chiral
  • The compound is certainly meso
  • There is no compound in the solvent.

  • 4. 
    Which element is estimated by Carius method

  • Carbon
  • Hydrogen
  • Halogen
  • Nitrogen

  • 5. 
    Inductive effect involves

  • displacement of σ electrons
  • delocalization of π electrons
  • delocalization of σ-electrons
  • displacement of π-electrons

  • 6. 
    A crystalline solid possess which one of the following property?

  • Irregularity
  • Non- symmetric
  • Perfect geometric pattern
  • non- stability

  • 7. 
    Which of the following behaves both as a nucleophile and as an electrophile?

  • CH C ≡ N
  • CH OH
  • CH = CHCH
  • CH NH
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