Percentage of oxygen in phenol is from Chemistry Alcohols, Pheno

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 Multiple Choice QuestionsMultiple Choice Questions

601.

Phenol on oxidation in air gives

  • quinone

  • catechol

  • resorcinol

  • o-cresol


602.

X Y Benzoquinone. Identify X and Y inthe above reaction.

  • X Y
    Zn
  • X Y
    Na2Cr2O7/ H2SO4
  • X Y
    Na2Cr2O7/ H2SO4
  • X Y
    Zn

603.

C6H5- O- CH2- CH3, HI Y+ Z

Identify Y and Z inthe above reaction.

  •  

    X Y
    C6H5OH H3CCH3
  •  

    X Y
    C2H5I C6H5CHO
  • X Y
    C6H5I H3CCH2OH
  • X Y
    C6H5OH H3CCH2I

604.

What is Z in the following sequence of reaction?

2-methyl-2-bromopropane Dry etherMg X H2O Z

  • Propane

  • 2-methyl propene

  • 2-methyl propane

  • 2-methyl butane


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605.

C2H5OH can be differentiated from CH3OH by

  • reaction with HCl

  • reaction with NH3

  • by iodoform test

  • by solubility in water


606.

The reaction between an alcohol and an acid is called

  • esterification

  • saponification

  • hydrolysis

  • hydrogenation


607.

C2H5OH NaOHI2 A KOHAqueous B

In equation given above A and B respectively are:

  • CHI3 and HCOOK

  • CHI3 and CH3COOK

  • CH4 and HCOOK

  • CHI3 and H2


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608.

Percentage of oxygen in phenol is

  • 17.02

  • 15.2

  • 16

  • 15


A.

17.02

Molecular formula of phenol = C6H5OH

Molecular weight = 94 u

      % of oxygen = weight of oxygenmolecular weight × 100

                        = 1694 × 100

 % of oxygen = 17.02


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609.

Aniline reacts with chloroform in the presence of KOH to give

  • phenol

  • chlorobenzene

  • phenyl cyanide

  • phenyl isocyanide


610.

Which of the following is most soluble in water?

  • Normal butyl alcohol

  • Iso-butyl alcohol

  • Tertiary butyl alcoho

  • None of the above


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