Pure Substances and Mixtures Multiple Choice Questions (MCQ) PDF Download

MCQ 1: What is true about mixtures?

1. they have a range of boiling points
2. they have a range of melting points
3. they lack of exact concentrations
4. all of above

MCQ 2: What is true about pure substances?

1. they have fixed and exact boiling point
2. they have fixed and exact melting points
3. they form only one post on chromatogram
4. all of above

MCQ 3: Oil and water is an example of

1. miscible
2. impure substances may also form the crystals
3. filtrate
4. suspension

MCQ 4: Fresh seawater is referred to as impure water because it contains

1. oxygen
2. aquatic animals
3. aquatic plants
4. dissolved salts

MCQ 5: Liquids that mix together are called as

1. mixtures
2. miscible
3. immiscible
4. fraction