WORKSHEET

SEPARATION OF SUBSTANCES.

II) Name the following :

1. The process by which butter separated from curd.

2. Chemicals used for loading or increasing sedimentation.

 3. The method for separating a soluble solid from its solution.

4.The process by which pure salt separated from impure salt.

5. Diseases caused by bacteria ion water.

6. Method for separating paneer from curdled milk.

7. The gas used for killing micro organisms in water.

8. The method for separating two immiscible liquids.

9. You are given a mixture of sand, salt and iron filling. How will you separate all the components?

II. FILL IN THE BLANKS.

1: Sand can be separated from water by the process of _______________________________.

2: Common salt is obtained from sea water by the process of __________________________.

  

3: Husk is separated from rice by the process of _____________________________________.

4: Stones can be separated from rice by the process of ________________________________.

5: Grains can be separated from stalks by __________________________________________.

6: To separate tea leaves from tea we use a _________________________________________.

III. Answer in one word

1: Name the method used to separate pebbles or stones from sand.    ________________.

2: Name the method used to separate oil from water.    ______________________.

   IV. Define the following

1: Threshing         2: Handpicking       3: Filtration      

 4: Saturated solute

  V. Distinguish between

1: Evaporation and condensation.   2: Sedimentation and decantation.