UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper III
Q7(b). Distinguish two compounds by IR
Question
Distinguish the following compounds by IR spectroscopy. [a pair of carbonyl compounds given in the paper]
Model answer
The free solution for 2020 answers questions 1, 2, 4, 6, 8 and 10, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
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CoversIR spectroscopycarbonyl stretching frequencyacid chloride vs aldehyde
All parts of Question 7
- 7(a) Ketone with excess HN₃ in H₂SO₄10 marks
- 7(b) Distinguish two compounds by IR5 marks
- 7(c) Identify A and B in an acyl azide sequence5 marks
- 7(d) Reaction sequence via an amide ester with DBU10 marks