Sieving

Q. Sand and gravel can be separated from each other by ________.

1. Filter funnel
2. Sieve
3. Evaporating basin
4. Decanter

Q.

Which Method Is Used To Separate Pebbles and Stones From Sand?

1. Winnowing

2. Sieving

3. Hand Picking

4. Any of these

Q. Which device is used to separate pebbles and stones from the sand?

1. Filter paper
2. Thresher
3. Decanter
4. Sieve

Q.

Give one example of the following

D) Solid-gas heterogeneous mixture.

Q. Which process can be used to separate the components of the mixture that differ in size?

1. Winnowing
2. Filtration
3. Decantation
4. Sieving

Q.

Name four conventional methods used for the purification of water? [2 MARKS]

Q. A mixture of chalk powder can be removed from flour by sieving.

1. True
2. False

Q. Wheat flour and salt can be separated by sieving.

1. True
2. False

Q.

Sand from water is separated by:

1. Sieving

2. Evaporation

3. Filtration

4. Sedimentation and Decantation.

Q.

Match the mixtures in column I with their method of separation in column II.

Column 1	Column 2
a) Oil mixed in water	1) Sieving
b) Iron powder mixed with four	2) Hand-picking
c) Salt mixed with water	3) Decantation
d) Ladys figure mixed with beans	4) Magnet
e) Rice flour mixed with kidney beans	5) Evaporation

Q. What is sieving? Where is it used?

Q. 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.

Q. The mixture of dry leaves and sand can be separated by the process of :

1. Threshing
2. Winnowing
3. Sieving
4. Hand picking

Q.

Rahul was going to cook rice, but he found weevils in the rice box.Which method of separation should he use to remove those weevils? [1 MARK]

Q. _________ can be used to seperate husk from flour in kitchen.

1. Decantation
2. Sieving
3. Winnowing
4. Sublimation

Q.

Farmer separate the mixture of wheat grains and husk by the process of

1. sieving

2. winnowing

3. filtration

4. hand-picking

Q.

3. Name the method of separation used to separate the following:

(d) Cashew nuts in industries.

Q. State true or false:
When you try to separate salt from water by evaporation, the water evaporated is salty.

1. True
2. False

Q.

Question 6

While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

(a) Threshing

(b) Sieving

(c) Winnowing

(d) Filtration

Q. A mixture of flour and can be separated by sieving.

1. husk
2. water
3. pebbles

Q.

What is the settling down of the insoluble heavy solid particles in a solid-liquid mixture called?

1. decantation

2. sieving

3. sedimentation

4. winnowing

Q. Pebbles and sand particles can be separated from flour by the process of .

1. sieving
2. threshing
3. winnowing

Q. Pebbles can be removed from sand by _____________.

1. decantation
2. sublimation
3. sieving
4. sedimentation

Q. Pebbles and sand particles can be separated from wheat by the process of .

1. threshing
2. sieving
3. winnowing

Q.

Salt can be obtained from sea water by ______________.

Q.

Muddy water can be separated by:

1. Sedimentation

2. Winnowing

3. Evaporation

Q.

Identify the method that can be used to seperate the components of a mixture, when there is a difference in the size of its constituent particles.

1. Decantation

2. Winnowing

3. Sedimentation

4. Sieving

Q. Stones can be separated from talcum powder by the process of.

1. sieving
2. winnowing
3. threshing

Q.

From where the salt is obtained from seawater?

Q.

Fill in the blanks with appropriate word. Husk from wheat flour is generally removed by______.