A metallic piece displaces water of volume 15 mL. The volume of piece is:

1. 15 cm³
2. 15 m³
3. 15 x 10³ cm^-3
4. 15 x 10³ cm³

A piece of paper of dimensions 1.5 m x 20 cm has area:

1. 30 m²
2. 300 cm²
3. 0.3 m²
4. 3000 m³

The density of alcohol is 0.8 g cm^-3. In S.I. unit, it will be:

1. 0.8 kg m^-3
2. 0.0008 kg m^-3
3. 800 kg m^-3
4. 8 x 10³ kg m^-3

The density of aluminium is 2.7 g cm^-3 and of brass is 8.4 g cm^-3. For the same mass, the volume of:

1. both will be same
2. aluminium will be less than that of brass
3. aluminium will be more than that of brass
4. nothing can be said