Question 33
Question 33 of 40
Question image for Q33
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
11. Organic chemistry
11.3. Fuels

State that hydrocarbons are compounds that contain hydrogen and carbon only

8. The Periodic Table
8.4. Transition elements

Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III)