Ravjot’s mother always squeezes water from wet clothes in the spinner of washing machine and then uses it to clean the floor :

(a) Write the principle of the technique used in the above mentioned process.

(b) Write one more application of this technique.

(c) What do you learn from Ravjot’s mother?

Ans. (a) Centrifugation.

(b) (i) Used in diagnostic laboratories for blood and urine tests.

(ii) Used in dairies and home to separate butter from cream. (Any one)

(c) Ravjot’s mother is concerned about saving water. It shows she is caring about environment and natural resources. She is reusing waste water and thus saving precious resource of our environment.

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