Question 20
Question 20 of 40
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Periodic Table
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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
18. Carboxylic acids and...
18.1. Carboxylic acids

recall the reactions by which carboxylic acids can be produced: (a) oxidation of primary alcohols and aldehydes with acidified \( K_2Cr_2O_7 \) or acidified \( KMnO_4 \) and refluxing (b) hydrolysis of nitriles with dilute acid or dilute alkali followed by acidification (c) hydrolysis of esters with dilute acid or dilute alkali and heat followed by acidification

21. Organic synthesis
21.1. Organic synthesis

analyse a given synthetic route in terms of type of reaction and reagents used for each step of it, and possible by-products