Question

P and Q are isomers of dicarboxylic acid C₄H₄O₄. Both decolorize Br₂/H₂O. On heating, P forms the cyclic anhydride.

Upon treatment with dilute alkaline KMnO₄, P as well as Q could produce one or more than one from S, T and U.

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Linked Question 1

Compounds formed from P and Q are, respectively

Optically inactive pair (T, U) and optically inactive S.

Optically active pair (T, U) and optically active S

Optically active S and optically active pair (T, U)

Optically inactive S and optically inactive pair (T, U)

Linked Question 2

In the following reaction sequences V and W are respectively