78. How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and
79. Deduce the identity of the compound from the data provided.C5H10O2: IR (cm-1): 3380 (br, s). 1H-
71. Identify the monomer(s) which are used to prepare the following segment of polymer:- CH2CH=CHCH2
73. Which is the best procedure for the preparation of 2,4-dinitrobenzoic acid from benzene?(A) 1. H
76. Choose the structure that is NOT an intermediate or product in the Wolff-Kischner reduction of a
77. Choose the best alkyne reactant to complete the following reaction sequence. (A) (B) (C) (D) (E)
78. Extraction of a mixture of toluene, phenol and phenylacetic acid under various conditions can be
79. Which of the following series of synthetic steps could be used to carry out the transformation s
61. What sequence of reagents is needed to convert t-butylbenzene into 1-bromo-2-(t-butyl)benzene?I.
80. The scheme describes the catalytic hydrogenation pathway of 1-butene to butane. Which of the fol