Question

ter?
cream
8. Fill up the blanks
(a) The method of separating seeds of paddy from its stalks is called
(b) When milk, cooled after boiling, is poured onto a piece of cloth the
(malai) is left behind on it. This process of separating cream from milk is an
example of
(c) Salt is obtained from seawater by the process of
(d) Impurities settled at the bottom when muddy water was kept overnight in a
bucket. The clear water was then poured off from the top. The process of
separation used in this example is called
9. True or false?
(a) A mixture of milk and water can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by the process of
winnowing.​

Answer 1

Fill in the blanks:

(a) The method of separating seeds of paddy from its stalks is called threshing.

(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of filtration.

(c) Salt is obtained from sea water by the process of evaporation.

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called sedimentation and decantation.

True or false:

(a) False. we cannot separate mixture of milk and water by filtration because milk is completely soluble in water.

(b) False. winnowing process is used to seperate heavier and lighter components of a mixture, e. g, separation of husk from grains.

Answer 2

Answer:

Fill up the blanks:

(a) The method of separating seeds of paddy from its stalks is called ----------.

(b) When milk cooled after boiling, is poured onto a piece of cloth, the cream (malai) is left behind on it. This process of separating cream from milk is an example of --------.

(c) Salt is obtained from seawater by process of ----------------.

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ------------.

Answer: (a) The method of separating seeds of paddy from its stalks is called threshing.

(b) When milk cooled after boiling, is poured onto a piece of cloth, the cream (malai) is left behind on it. This process of separating cream from milk is an example of filtration.

(c) Salt is obtained from seawater by process of evaporation.

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called decantation.

True or False?

(a) A mixture of milk and water can be separated by filtration. 

(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.

(c) Separation of sugar from tea can be done with filtration. 

(d) Grain and husk can be separated with the process of decantation. 

Answer:  (a) F, (b) F, (c) T, (d) F