O level Chemistry States of Matter Multiple Choice Questions (MCQ) PDF Download

MCQ 1: A methylated spirit is a form of

1. liquid
2. gas
3. crystal
4. aqueous

MCQ 2: Presence of impurities cause a

1. rise in boiling point only
2. fall in melting point only
3. fall in condensation point
4. rise in boiling point and fall in melting point

MCQ 3: The purity of a substance can be estimated through

1. boiling points only
2. melting points only
3. sublimation point
4. boiling and melting points

MCQ 4: Substances which transform from solid into a gas directly, are called as

1. Amphoteric oxides
2. basic oxides
3. sublimations
4. neutral oxides

MCQ 5: The melting point of water is

1. 0 °C
2. −210 °C
3. −78 °C
4. 20 °C