1.

There are three isomeric compounds `P,Q,R` with molecular formula `C_(4)H_(6)O_(3)`.Compound `P` is a saturated hydroxy carboxylic acid.Compound `Q` is a symmetrical anhydride while `R` is an aldehydic ester. Which of the following is `P`?A. B. C. D.

Answer» Correct Answer - D


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