Mixtures and Compounds MCQ (Multiple Choice Questions) PDF Download

A compound is a

1. pure substance
2. an impure substance due to various elements
3. substance with varying boiling points
4. a substance with varying melting points

The smallest particle of a compound is

1. atom
2. electrons
3. molecules
4. none of above

A compound results from the chemical combination of

1. two or more atoms only
2. two or more non-metals only
3. two or more metalloids
4. two or more atoms and non-metals

Mixtures can be converted to compounds through

1. physical change
2. chemical change
3. high pressures
4. catalytic reactions

Mass of an element in a compound can be calculated through

1. Ar of the atoms/Mr of the compound
2. Mr of the atoms/Ar of the compound
3. (Ar of the atoms/Mr of the compound) × mass of sample
4. (Ar of the atoms/Mr of the compound) × mass of sample