Question 40
Question 40 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
13. An introduction to AS...
13.4. Isomerism: structural isomeri...

explain what is meant by a chiral centre and that such a centre gives rise to two optical isomers (enantiomers)

17. Carbonyl compounds
17.1. Aldehydes and ketones

describe the mechanism of the nucleophilic addition reactions of hydrogen cyanide with aldehydes and ketones in 17.1.2(b)

15. Halogen compounds
15.1. Halogenoalkanes

recall that primary halogenoalkanes tend to react via the \( S_N2 \) mechanism; tertiary halogenoalkanes via the \( S_N1 \) mechanism; and secondary halogenoalkanes by a mixture of the two, depending on structure