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Karnataka Board PUCPUC Science 2nd PUC Class 12

Compound ‘A’ was prepared by oxidation of compound ‘B’ with alkaline KMnOX4. Compound ‘A’ on reduction with lithium aluminium hydride gets converted back to compound ‘B’. When compound ‘A’ is - Chemistry

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Question

Compound ‘A’ was prepared by oxidation of compound ‘B’ with alkaline \[\ce{KMnO4}\]. Compound ‘A’ on reduction with lithium aluminium hydride gets converted back to compound ‘B’. When compound ‘A’ is heated with compound B in the presence of \[\ce{H2SO4}\] it produces fruity smell of compound C to which family the compounds ‘A’, ‘B’ and ‘C’ belong to?

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Solution

When alkaline \[\ce{KMnO4}\] oxidises compound ‘B’ with compound ‘A’, acid is formed.

\[\ce{B ->[{[O]}][alkaline KMnO4] A -> acid}\]

When compound ‘A’ is reduced with \[\ce{LiAlH4}\], it transforms into compound ‘B’. The letter ‘B’ stands for a type of alcoholic beverage.

\[\ce{A ->[LiAlH4] B -> Alcohol}\]

When compounds ‘A’ and ‘B’ are heated with conc. \[\ce{H2SO4}\], compound ‘C’ is formed which has a fruity odour.

\[\ce{A + B ->[A][H2SO4] fruitysmell (ester)}\]

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Chapter 12: Aldehydes, Ketones and Carboxylic Acids - Multiple Choice Questions (Type - I) [Page 173]

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NCERT Exemplar Chemistry [English] Class 12
Chapter 12 Aldehydes, Ketones and Carboxylic Acids
Multiple Choice Questions (Type - I) | Q 29 | Page 173

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