Question 19
Question 19 of 40
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Periodic Table
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No letter options?
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 and explain: (a) the basicity of ammonia, using the Brønsted–Lowry theory (b) the structure of the ammonium ion and its formation by an acid–base reaction (c) the displacement of ammonia from ammonium salts by an acid–base reaction

18. Carboxylic acids and...
18.1. Carboxylic acids

describe: (a) the redox reaction with reactive metals to produce a salt and H\(_2\)(g) (b) the neutralisation reaction with alkalis to produce a salt and H\(_2\)O(l) (c) the acid–base reaction with carbonates to produce a salt and H\(_2\)O(l) and CO\(_2\)(g) (d) esterification with alcohols with concentrated H\(_2\)SO\(_4\) as catalyst (e) reduction by LiAlH\(_4\) to form a primary alcohol