The structure of PCC is from Chemistry Alcohols, Phenols and Eth

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 Multiple Choice QuestionsMultiple Choice Questions

591.

Identify A and B in the following reaction

CH3-CH3 B CH3COOH  A CH3CH2OH

  • A - HI + red P; B - LiAlH4

  • A - Ni/  ; B - LiAlH4

  • A - LiAlH4 ; B - HI + red P

  • A - Pd- BaSO4 ; B - Zn - HCl


592.

The correct match is:

Reactants Product
(A) C2H5Cl, most Ag2 (i) CH3CH2ONO
(B) C2H5Cl, aqueous ethanolic AgCN (ii) C2H4
(C) C2H5Cl, aqueous ethanolic AgNO2 (iii) CH3CH2OH
(D) C2H5Cl, ethanolic KOH (iv) CH3CH2NC
  (v) C2H6
  •  A-v, B-iii, C-iv, D-i

  • A-i, B-ii, C-iii, D-iv

  • A-iii, B-iv, C-i, D-ii

  • A-iv, B-i, C-ii, D-v


593.

The IUPAC name of the compound (CH3)2CH—CH=CHCHOH—CH3 is

  • 5-methyl-hex-3-en-2-ol

  • 2-methyl-hex-3-en-5-ol

  • 2-hydroxy-5-methyl-3-hexene

  • 5-hydroxy-2-methyl-3-hexene


594.

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


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595.

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


596.

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)


597.

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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598.

The structure of PCC is

  • C6H5NHCrO2Cl

  • C6H5NHCrO2Cl

  • C5H5NHCrO2Cl

  • C5H5NHCrO3Cl


D.

C5H5NHCrO3Cl

Pyridinium chlorochromate or PCC can be prepared by the dissolution of chromium trioxide in aqueous HCl. Addition of pyridine gives pyridinium chlorochromate as orange cryotol. PCC offers to the advantage of the selective oxidation of alcohols to aldehydes, whereas many other reagents are less selective.


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599.

Identify phenacetin from the following-


600.

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

In the above reaction, 'X' is

  • diodomethane

  • triodomethane

  • iodomethane

  • tetrariodomethane


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