Separation Techniques

Why do we need to separate substances?

• To separate useful and non- useful substances

• To get rid of impurities

• To use substance of a mixture separately

• All of the above

Substances of a mixture CANNOT be separated physically by

• Color

• Size

• Mass

• Molecules

Which among the following is NOT a Separation Technique?

• Churning

• Sublimation

• Saponification

• Distillation

The most common separation technique we use in our day to day life is

• Hand picking

• Evaporation

• Threshing

• Condensation

Among these, what remains always same after separation of substances from a mixture

• Size

• Shape

• Mass

• Hotness/Coldness