Which factor is usually essential for the filtration? Class 6

Which factor is usually essential for the filtration? Class 6

Question 1.

Which factor is usually essential for the filtration? Class 6

(i) Apparatus size

(ii) Presence of air

(iii) Pore size

(iv) Temperature of the mixture

Answer:

(iii) Pore size

Question 2.

State with reason(s) whether the following statements are True [T] or False [F]. Also, correct the False statement(s). Class 6

(i) Salt can be separated from salt solution by keeping it under the Sun.

Answer:

True

(ii) Handpicking should be used only when the quantity of one component is less.

Answer:

True

(iii) A mixture of puffed rice and rice grains can be separated by threshing.

Answer:

False

Correction : A mixture of puffed rice and rice grains can be separated by winnowing or handpicking.

(iv) A mixture of mustard oil and lemon water can be separated by decantation.

Answer:

True

(v) Sieving is used to separate a mixture of rice flour and water.

Answer:

False

Correction : Sieving is used to separate solid particles from other solids based on size, but a mixture of rice flour and water would require filtration to separate the solid from the liquid.