Q.1
Grignard reagent is not prepared in aqueous medium but prepared; in ether medium because thereagent…………..
  • Is highly reactive in ether
  • Is insoluble in water
  • Reacts with water
  • Becomes inactive in water
Q.2
Chemical name of Grignard reagent is
  • Sodium thiosulphate
  • Ethyl magnesium chloride
  • Sodium bicarbonate
  • Sodium sulphite
Q.3
Chemical name of Grignard reagent is
  • Sodium thiosulphate
  • Ethyl magnesium chloride
  • Sodium bicarbonate
  • Sodium sulphite
Q.4
Which of the following reagents, when treated with phenylmagnesiuim bromide followed by acid workup, will yield 2-phenylethanol?
  • Diethyl ether
  • Ethanol
  • Ethanal
  • Oxirane
Q.5
Which of the following compounds would not give tert-butyl alcohol when treated with excess methylmagnesium bromide?
  • acetyl chloride
  • methyl acetate
  • acetic anhydride
  • acetaldehyde
Q.6
Which of the following compounds gives a secondary alcohol upon reaction with methylmagnesium bromide?
  • Butyl formate
  • Pentanal
  • 3- pentanone
  • Methyl butanoate
Q.7
Which is not present in Grignard reagent?
  • Halogen
  • −COOH group
  • Magnesium
  • Methyl group
Q.8
Alkyl halides can be converted into Grignard reagents by _______________
  • Warming them with Mgcl2
  • Boiling them with Mg ribbon in alcoholic solution
  • Warming them with magnesium powder in dry ether
  • Refluxing them with MgCl2 solution
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