KPPSC - MCQs

Q An SN2 reaction on a chiral center with configuration R must result in a product with a configuration that is:

  • A Exclusively S
  • B Exclusively S or achiral
  • C Racemic
  • D Exclusively S or R or achiral
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KPPSC Female SS Chemistry 25-05-23 Uploaded By: Jawad Bashir

Q What is the bond order of He2?

  • A 0
  • B 1
  • C 1/2
  • D 2
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KPPSC Female SS Chemistry 25-05-23 Uploaded By: Jawad Bashir

Q The Born-Oppenheimer approximation neglects:

  • A Spin
  • B Coupling
  • C Nuclear Motion
  • D Molecular vibrations
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KPPSC Female SS Chemistry 25-05-23 Uploaded By: Jawad Bashir

Q The Stern-Gerlach experiment demonstrated the existence of:

  • A Mass
  • B Charge
  • C Spin
  • D Waves
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KPPSC Female SS Chemistry 25-05-23 Uploaded By: Jawad Bashir

Q A harmonic oscillator is used as a model for:

  • A Molecular rotation
  • B Hydrogen atom
  • C A particle in a box
  • D Molecular vibrations
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KPPSC Female SS Chemistry 25-05-23 Uploaded By: Jawad Bashir

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