Which one has zero octane number?

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• If we remove one hydrogen atom from an alkane we obtain?

  (A) Formyl group
  (B) Acetyl group
  (C) Ketyl group
  (D) Alkyl group

  ►Correct Option
  
  Correct Option is: D
  

  Published on 14-01-2022

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• When ethene is passed through a dilute solution of KMnO₄ the pink colour changes to?

  (A) Green
  (B) Colourless
  (C) Blue
  (D) Red

  ►Correct Option
  
  Correct Option is: B
  

  Published on 14-01-2022

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• Which of the following hydrocarbons is liquid at room temperature?

  (A) Hexane
  (B) Ethane
  (C) Butane
  (D) Ethene

  ►Correct Option
  
  Correct Option is: A
  

  Published on 14-01-2022

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• Vicinal dihalides on treatment with zinc dust gives?

  (A) Alkenes
  (B) Alkanes
  (C) Alkynes
  (D) All of the above

  ►Correct Option
  
  Correct Option is: A
  

  Published on 14-01-2022

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• General formula for alkenes is?

  (A) C_nH_2n+1
  (B) C_nH_2n+2
  (C) C_nH_2n
  (D) C_nH_2n-2

  ►Correct Option
  
  Correct Option is: C
  

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• In sp² type hybridization the three equivalent sp² orbitals lie in the same plane and at angle of?

  (A) 0 Degree
  (B) 60 Degree
  (C) 120 Degree
  (D) 180 Degree

  ►Correct Option
  
  Correct Option is: C
  

  Published on 14-01-2022

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• The four bonds of carbon in methane are directed towards the corners of?

  (A) Hexagon
  (B) Pentagon
  (C) Tetrahedron
  (D) Cube

  ►Correct Option
  
  Correct Option is: C
  

  Published on 14-01-2022

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• Alkanes can not show cis-trans isomerism?

  (A) Alpha bond is stronger than Pi bond
  (B) Alpha bond requires less energy to be rotated
  (C) Alkanes posses three groups attached to each carbon
  (D) All of the above

  ►Correct Option
  
  Correct Option is: B
  

  Published on 14-01-2022

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