O-LevelChemistryBonding & Structure5070/11 · Oct/Nov 2022 · Q21 Mark

A liquid, X, is distilled from a mixture using the apparatus shown. During the distillation, the thermometer reads from 157 °C to 160 °C. Which information about liquid X is correct?

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AThe liquids in X may or may not be miscible (mix with each other).

BX is a mixture that can be separated by distillation.

CX must contain two liquids with boiling points 157 °C and 160 °C.

DX must have been obtained by the fractional distillation of petroleum (crude oil).

✓ Correct answer

A: The liquids in X may or may not be miscible (mix with each other).

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 1, question 2.

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