Question 23
Question 23 of 40

Question image for Q23
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

define the term hydrocarbon as a compound made up of C and H atoms only

deduce the possible isomers for an organic molecule of known molecular formula

suggest how cracking can be used to obtain more useful alkanes and alkenes of lower \( M_f \) from heavier crude oil fractions