JEE Questions for Chemistry Alcohols Phenols And Ethers Quiz 6 - MCQExams.com

Which of the following compounds is weakest acid?

  • Chemistry-Alcohols Phenols and Ethers-130.png
  • 2)
    Chemistry-Alcohols Phenols and Ethers-131.png

  • Chemistry-Alcohols Phenols and Ethers-132.png

  • Chemistry-Alcohols Phenols and Ethers-133.png

Chemistry-Alcohols Phenols and Ethers-134.png
  • Liebermann's reaction
  • Phthalein fusion test
  • Reimer-Tiemann reaction
  • Schotten-Baumann reaction
Which is not correct ?
  • Phenol is more acidic than acetic acid
  • Ethanol is less acidic than phenol
  • Ethanol has higher boiling point than ethane
  • Ethane is a non-linear molecule
The acidic hydrolysis of ether (X) shown below is fastest when
Chemistry-Alcohols Phenols and Ethers-135.png
  • one phenyl group is replaced by a methyl group
  • one phenyl group is replaced by a para-methoxyphenyl group
  • two phenyl groups are replaced by two para-methoxyphenyl groups
  • no structural change is made to X
Which of the following compounds will not react with Mg metal in the presence of ether to give a Grignard reagent?
  • CH2 =CHBr
  • CH3CH2I
  • CH2OHCH2Br
  • CH3OCH2CH3I
In the reaction,
Chemistry-Alcohols Phenols and Ethers-136.png

  • Chemistry-Alcohols Phenols and Ethers-137.png
  • 2)
    Chemistry-Alcohols Phenols and Ethers-138.png

  • Chemistry-Alcohols Phenols and Ethers-139.png

  • Chemistry-Alcohols Phenols and Ethers-140.png
One mole of an organic compound A with the formula C3H8O reacts completely with two moles of HI to form X and Y. When Y is boiled with aqueous alkali it forms Z. Z answers the iodoform test. The compound A is
  • propan-2-ol
  • propan-1-ol
  • ethoxyethane
  • methoxyethane
Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl3 to give
  • CH3 CH2 COOH
  • CH3 CH2 COOCH2 CH3
  • CH3 COOCH3
  • CH3 COOC2 H5
An organic compound C3H6O neither gives precipitate with semicarbazide nor reacts with sodium. It could be
  • CH3CH2CHO
  • CH3COCH3
  • CH2=CHCH2OH
  • CH2=CHOCH3
Anisole can be prepared by the action of methyl iodide on sodium phenate. The reaction is called
  • Wurtz's reaction
  • Williamson's reaction
  • Fittig's reaction
  • Etard's reaction

Chemistry-Alcohols Phenols and Ethers-142.png

  • Chemistry-Alcohols Phenols and Ethers-143.png
  • 2)
    Chemistry-Alcohols Phenols and Ethers-144.png

  • Chemistry-Alcohols Phenols and Ethers-145.png

  • Chemistry-Alcohols Phenols and Ethers-146.png
The products obtained when anisole is heated in a sealed tube with HI are

  • Chemistry-Alcohols Phenols and Ethers-148.png
  • 2)
    Chemistry-Alcohols Phenols and Ethers-149.png

  • Chemistry-Alcohols Phenols and Ethers-150.png
  • CH3OH + CH3 I
The reaction,
C2H5ONa + C2H5 I → C2H5 OC2H5 + NaI
is known as
  • Kolbe's synthesis
  • Wurtz's synthesis
  • Williamson's synthesis
  • Grignard's synthesis
In Williamson's synthesis ethoxy ethane is prepared by
  • passing ethanol over heated alumina
  • heating sodium ethoxide with ethyl bromide
  • treating ethyl alcohol with excess of H2SO4 at 430-440 K
  • heating ethanol with dry Ag2O
An ether is more volatile than an alcohol having the same molecular formula. This is due to
  • dipolar character of ethers
  • alcohols having resonance structures
  • intermolecular hydrogen bonding in ethers
  • intermolecular hydrogen bonding in alcohols
In Williamson's synthesis
  • an alkyl halide is treated with sodium alkoxide
  • an alkyl halide is treated with sodium
  • an alcohol is heated with conc. H2SO4 at 130°C
  • None of the above
The cleavage of an aryl-alkyl ether with cold HI gives
  • alkyl iodide and water
  • aryl iodide and water
  • alkyl iodide, aryl iodide and water
  • phenol and alkyl iodide
Which of the following compounds when heated with CO at 150°C and 500 atm pressure in the presence of BF3 forms ethyl propionate ?
  • C2H5OH
  • CH3OCH3
  • C2H5OC2H5
  • CH3OC2H5
Ethyl chloride reacts with sodium ethoxide to form a compound A. Which of the following reactions also yields A ?
  • C2H5Cl, KOH (alc. ), ∆
  • 2C2H5OH, conc. H2SO4 , 140° C
  • C2H5Cl, Mg (dry ether)
  • C2H2 , dil ∙ H2SO4 , HgSO4
Diethyl ether on heating with conc. HI gives two moles of
  • Ethanol
  • Iodoform
  • Ethyl iodide
  • Methyl iodide
In CH3CH2OH, the bond that undergoes heterolytic change most readily is
  • C-C
  • C-O
  • C-H
  • O-H
Which one is formed when sodium phenoxide is heated with ethyl iodide?
  • Phenetole
  • Ethyl phenyl alcohol
  • Phenol
  • None of these
The compound which can form intramolecular hydrogen bond is
  • m-Hydroxybenzaldehyde
  • Salicyladehyde
  • Benzaldehyde
  • p-Hydroxybenzaldehyde
Maximum number of active hydrogens are present in
  • Acetic acid
  • Methane
  • Glycerol
  • Methanol
In the reaction of phenol with CHCl3 and aqueous NaOH at 70oC (343 k), the electrophile attacking the ring is
  • CHCl3
  • CHCl2
  • :CCl2
  • COCl2
How many isomers of C5H11OH will be primary alcohols ?
  • 5
  • 4
  • 2
  • 3
HBr reacts fastest with
  • 2-Methylpropan-1-ol
  • 2-Methylpropan-2-ol
  • Propan-2-ol
  • Propan-1-ol
Which one of the following on oxidation gives a ketone?
  • Priamry alcohol
  • Secondary alcohol
  • Tertiary alcohol
  • All of these
What is formed when a primary alcohol undergoes catalytic dehydrogenation?
  • Aldehyde
  • Ketone
  • Alkene
  • Acid
In its reaction with sodium, 1 mol of a compound X gives 1 mol of H2. Which one of the following compounds might be X ?
  • CH3CH2CH = CH2
  • CH3COOCH2CH3
  • CH3CH2CH2OH
  • CH2OHCH2CH2CH2OH
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Chemistry Quiz Questions and Answers