Question 4
Question 4 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
10. Chemistry of the envi...
10.1. Water

Describe how to test for the purity of water using melting point and boiling point

3. Stoichiometry
3.3. The mole and the Avogadro cons...

Use the molar gas volume, taken as 24 dm(^3) at room temperature and pressure, r.t.p., in calculations involving gases

11. Organic chemistry
11.3. Fuels

Describe how the properties of fractions obtained from petroleum change from the bottom to the top of the fractionating column, limited to: (a) decreasing chain length (b) higher volatility (c) lower boiling points (d) lower viscosity