Question 28
Question 28 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
12. Nitrogen and sulfur
12.1. Nitrogen and sulfur

describe the role of NO and NO\(_2\) in the formation of acid rain both directly and in their catalytic role in the oxidation of atmospheric sulfur dioxide

4. States of matter
4.1. The gaseous state: ideal and r...

explain the origin of pressure in a gas in terms of collisions between gas molecules and the wall of the container

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