Goa PSC Associate Professor Question Paper 2021 Download Free PDF
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Goa PSC Associate Professor Question Paper 2021 Download PDF
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Q1 : In the conversion of Pyrrole to 3-chloropyridine, the reactive intermediate involved is a
Q2 : ‘An organic reaction that is used to convert an electron rich aromatic ring to an aryl aldehyde using DMF, an acid chloride, and aqueous work-up’ is known by which of the following named reaction?
(a) Shapiro reaction
(b) Doebner Miller reaction
(c) Beckmann rearrangement
(d) Vilsmeyer – Haack reaction
Q3 : In this named reaction, phenol is converted to 2-hydroxy benzaldehyde and the reactive intermediate is dichlorocarbene,
(a) Riemer Tiemann reaction
(b) Perkin reaction
(c) Mannich reaction,
(d) Shapiro reaction
Q4 : Which of the following reaction is an enantioselective chemical reaction to prepare 2,3-epoxyalcohols from primary and secondary allylic alcohols?
(a) Perkin reaction
(b) Sharpless epoxidation
(c) Mitsunobu reaction
(d) Smiles rearrangement
Q5 : In this named reaction involving a dicarbonyl, an aldehyde, and ammonia, viewed as occurring in two stages, in the first stage, the dicarbonyl and ammonia condense to give a diimine with unusual orientation of N-H groups:
(a) Knorr’s pyrazole synthesis
(b) Debus-Radziszewski imidazole synthesis
(c) Pinner pyrimidine synthesis
(d) Combe’s quinoline synthesis