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Alcohol Phenol and Ether Quiz-9

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The one subject in NEET which is candidates who can easily attain good marks is Chemistry. That's the reason, often, one doesn’t pay notice and choose to compromise it. But if one wants to rank above others, the tip is to be thorough with NEET chemistry concepts. The understanding of reactions and definite basic understanding is what requires major attention in Chemistry but once done it only gets simpler from there. The main focus on the to-do list should be on getting a hang of the NCERT syllabus of NEET chemistry..

Q1. In the reduction,
The catalyst used is:
  •  Ni
  •  Pd
  •  Pt
  •  All of these
Solution
Reduction byis favoured by catalyst.

Q2.An example of a compound with functional group —O— is:
  •  Acetic acid
  •  Methyl alcohol
  •  Diethyl ether
  •  Acetone
Solution
Ethers are R—O—R′orR—O—R.

Q3.  Reaction of t-butyl bromide with sodium methoxide produces:
  •   Isobutane
  •  Isobutylene
  •  Sodium t-butoxide
  •  t-butyl methyl ether
Solution
Williamson’s synthesis for mixed ethers cannot be used to prepare ditertiary ethers, because tertiary alkyl halides on heating with sod. alkoxide gives dehydrohalogenation.

Q4. When diethyl ether is heated with an excess of
,it yields
  •  Ethyl chloride
  •  Diethyl ether peroxide
  •  Ethanoyl chloride
  •  Perchlorodiethy ether
Solution
Ethyl chloride

Q5.
  •  
  •  
  •  
  •  
Solution
 

Q6. Which of the following compounds is most acidic?
  •  
  •  
  • CH≡CH
  •  
Solution
Proton donors are acids. Among given choicescan give proton H most easily. 
 is most acidic among ,, CH≡CH and

Q7.Phenol can be converted to o-hydroxybenzaldehyde by
  •  Kolbe’s reaction
  •  Reimer-Tiemann reaction
  •  Wurtz reaction
  •  Cannizaro reaction
Solution
Reimer-Tiemann’s reaction


Q8.Action of nitrous acid on ethyl amine gives
  •  
  •  
  •  
  •   nitromethane
Solution


Q9.Absolute alcohol is prepared by
  •  Vacuum distillation
  •  Azeotropic distillation
  •  Steam distillation
  •  None of the above
Solution
Absolute alcohol is 100% pure ethanol. The fractional distillation of aqueous solution of ethanol gives a constant boiling azeotropic mixture which contains 95% ethanol. To get 100% ethanol, a small amount of benzene is added with azeotropic mixture and then distilled. It is called azeotropic distillation.

Q10. An alcohol is not oxidised in alkaline or neutral solution but in acidic solution it is turned first to acetone and then to acetic acid. It is a:
  •  Primary alcohol
  •  Secondary alcohol
  •  Tertiary alcohol
  •  None of these
Solution
Tertiary alcohol

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