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- 1. Multiple Choice
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
- 2. Multiple Choice
Substances of a mixture CANNOT be separated physically by
Color
Size
Mass
Molecules
- 3. Multiple Choice
Which among the following is NOT a Separation Technique?
Churning
Sublimation
Saponification
Distillation
- 4. Multiple Choice
The most common separation technique we use in our day to day life is
Hand picking
Evaporation
Threshing
Condensation
- 5. Multiple Choice
Among these, what remains always same after separation of substances from a mixture
Size
Shape
Mass
Hotness/Coldness
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