Isopropylbenzene is oxidized in the presence of air to compound '

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 Multiple Choice QuestionsMultiple Choice Questions

541.

The compound of molecular formula C5H10O(A) reacts with Tollen's reagent to give silver mirror but does not undergo aldol condensation. The compound A is

  • 3-pentanone

  • 2, 2-dimethylpropanal

  • 3-hydroxy-2-pentene

  • 3-methylbutanal


542.

lsopropyl methyl ether when treated with cold hydrogen iodide gives

  • isopropyl iodide and methyl iodide

  • isopropyl alcohol and methyl iodide

  • isopropyl alcohol and methyl alcohol

  • isopropyl iodide and methyl alcohol


543.

Compound 'A' of molecular formula C4H10O on treatment with Lucas reagent at room temperature gives compound 'B'. When compound 'B' is heated with alcoholic KOH, it gives isobutene. Compound 'A' and 'B' are respectively 

  • 2-methyl-2-propanol and 2-methyl-2-chloropropane

  • 2-methyl-1-propanol and 1-chloro-2-methylpropane

  • 2-methyl- 1-propanol and 2-methyl-2-chloropropane

  • butan-2-ol and 2-chlorobutane


544.

Salicylaldehyde can be prepared from phenol by

  • Scholten-Baumann reaction

  • Kolbe's reaction

  • Reimer-Tiemann reaction

  • Perkin reaction


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545.

Which among the following phenolic compound is most acidic in nature?

  • p-aminophenol

  • Phenol

  • m-nitrophenol

  • p-nitrophenol


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546.

Isopropylbenzene is oxidized in the presence of air to compound 'A'. When compound 'A' is treated with dilute mineral acid, the aromatic product formed is

  • phenol

  • benzene

  • benzaldehyde

  • acetophenone


A.

phenol

The aromatic product formed is phenol. It is the commercial method for the manufacture of phenol. The reaction is as follows-


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547.

Name the catalyst used in commercial method of preparation of phenol.

  • Silica

  • Calcium phosphate

  • Anhydrous aluminium chloride

  • Cobalt naphthenate


548.

The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is

  • Co(CO)8

  • (Ph3P)3RhCl

  • [Pt(NH3)2Cl2]

  • K[Ag(CN)2]


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549.

Phenol can be converted to o-hydroxybenzaldehyde by

  • Kolbe's reaction 

  • Reimer-Tiemann reaction 

  • Wurtz reaction 

  • Cannizaro reaction 


550.

When 3-phenylpropene reacts with HBr in the presence of peroxide, the major product formed is

  • 2-bromo 1-phenylpropane

  • 1, 2-dibromo 3-phenylpropane

  • 3-(o-bromophenyl) propene

  • 1-bromo 3-phenylpropane


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