Give the IUPAC name of the product obtained when Phenol is oxidized by chromic acid.
$(N a_{2} C r_{2} O_{7} +$ Conc. $H_{2} S O_{4})$ .

Cyclohexanone

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Cyclohexa-2,5-diene-1,4-dione

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Cyclohexa-1,4-dione

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Cyclohexa-1,4-diene-2,5-dione

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Solution

The correct option is B Cyclohexa-2,5-diene-1,4-dione
It is cyclohexa−2,5−diene−1,4−dione.
Hence, option $B$ is correct.

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Give the IUPAC name of the product obtained when Phenol is oxidized by chromic acid. (Na2Cr2O7+ Conc. H2SO4).

The correct option is B Cyclohexa-2,5-diene-1,4-dioneIt is cyclohexa−2,5−diene−1,4−dione.Hence, option B is correct.

Give the IUPAC name of the product obtained when Phenol is oxidized by chromic acid.
$(N a_{2} C r_{2} O_{7} +$ Conc. $H_{2} S O_{4})$ .

The correct option is B Cyclohexa-2,5-diene-1,4-dione
It is cyclohexa−2,5−diene−1,4−dione.
Hence, option $B$ is correct.