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161.

The conversion of O-acylated phenol in presence of AlCl3 to C-acylated phenol is an example for this type of organic reaction

  • addition reaction

  • substitution reaction

  • molecular rearrangement

  • elimination reaction


C.

molecular rearrangement


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162.

Consider the following reaction-

C2H5Cl + AgCN EtOH/ H2O X (major)

Which one of the following statements is true for X ?

(I) It gives propionic acid on hydrolysis.

(II) It has an ester functional group.

(III) It has a nitrogen linked to ethyl carbon.

(IV) It has a cyanide group.

  • IV

  • III

  • II

  • I


163.

The order of reactivity of phenol (I), nitrobenzene (II) and benzene (III) towards nitration is

  • (III) > (I) > (II)

  • (II) > (III) > (I)

  • (I) > (III) > (II)

  • (I) > (II) > (III)


164.

The products formed, in the reaction of phenol with Br2 dissolved in CS2 at 0°C are

  • o-bromo, m-bromo and p-bromophenols

  • o-bromo and p-bromophenols

  • 2,4,6-tribromo and 2,3,6-tribromophenols

  • 2,4-dibromo and 2,6-dibromophenols


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165.

The structure of PCC is

  • C6H5NHCrO2Cl

  • C6H5NHCrO2Cl

  • C5H5NHCrO2Cl

  • C5H5NHCrO3Cl


166.

Identify phenacetin from the following-


167.

C2H5OH + 4I2 + 3Na2CO3 → X + HCOONa + 5NaI + 3CO2 + 2H2O

In the above reaction, 'X' is

  • diodomethane

  • triodomethane

  • iodomethane

  • tetrariodomethane


168.

Phenol on oxidation in air gives

  • quinone

  • catechol

  • resorcinol

  • o-cresol


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169.

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

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

170.

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

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