Q22 of 9701_s15_qp_12

Question 22

Question 22 of 40

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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

14. Hydrocarbons

14.2. Alkenes

describe the use of aqueous bromine to show the presence of a C=C bond

14. Hydrocarbons

14.1. Alkanes

recall the reactions (reagents and conditions) by which alkanes can be produced: (a) addition of hydrogen to an alkene in a hydrogenation reaction, \( H_2(g) \) and Pt/Ni catalyst and heat (b) cracking of a longer chain alkane, heat with \( Al_2O_3 \)