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Question (1)

QN004942

Which method is commonly used to remove small stones from rice when the stones are present in very small quantity?

(A) Winnowing
(B) Handpicking
(C) Filtration
(D) Churning

Correct Answer: B

Explanation:

Handpicking is suitable when unwanted particles are few and can be picked by hand.

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Question (2)

QN004943

The process of separating grains from harvested stalks by beating them is called:

(A) Sieving
(B) Threshing
(C) Sedimentation
(D) Filtration

Correct Answer: B

Explanation:

Threshing separates grains from stalks.

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Question (3)

QN004944

Which method separates lighter husk from heavier grains with the help of wind?

(A) Handpicking
(B) Churning
(C) Winnowing
(D) Filtration

Correct Answer: C

Explanation:

Winnowing uses wind to separate lighter and heavier components.

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Question (4)

QN004945

Sieving separates substances mainly on the basis of difference in:

(A) Colour
(B) Smell
(C) Particle size
(D) Taste

Correct Answer: C

Explanation:

Sieving works because particles differ in size.

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Question (5)

QN004946

Which process converts a liquid into its vapour and can be used to recover a dissolved solid?

(A) Filtration
(B) Churning
(C) Evaporation
(D) Sedimentation

Correct Answer: C

Explanation:

Evaporation removes the liquid and leaves the dissolved solid behind.

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Question (6)

QN004947

The settling down of heavier insoluble particles at the bottom of a liquid is called:

(A) Decantation
(B) Filtration
(C) Sedimentation
(D) Winnowing

Correct Answer: C

Explanation:

Sedimentation occurs when heavier particles settle down.

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Question (7)

QN004948

Removing the clear liquid by carefully tilting a vessel after sedimentation is known as:

(A) Filtration
(B) Decantation
(C) Churning
(D) Sieving

Correct Answer: B

Explanation:

Decantation separates the liquid from settled solids.

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Question (8)

QN004949

Which method is used to separate tea leaves from prepared tea using a strainer?

(A) Winnowing
(B) Filtration
(C) Evaporation
(D) Churning

Correct Answer: B

Explanation:

A strainer acts as a filter.

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Question (9)

QN004950

Separation of magnetic and non-magnetic materials using a magnet is called:

(A) Filtration
(B) Sieving
(C) Magnetic separation
(D) Sedimentation

Correct Answer: C

Explanation:

Magnets attract magnetic substances and separate them.

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Question (10)

QN004951

Churning is mainly used to obtain:

(A) Salt from seawater
(B) Butter from curd
(C) Grains from stalks
(D) Bran from flour

Correct Answer: B

Explanation:

Churning separates butter from curd.

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Question (1)

Which method is commonly used to remove small stones from rice when the stones are present in very small quantity?

Explanation:

Link:

Question (2)

The process of separating grains from harvested stalks by beating them is called:

Explanation:

Link:

Question (3)

Which method separates lighter husk from heavier grains with the help of wind?

Explanation:

Link:

Question (4)

Sieving separates substances mainly on the basis of difference in:

Explanation:

Link:

Question (5)

Which process converts a liquid into its vapour and can be used to recover a dissolved solid?

Explanation:

Link:

Question (6)

The settling down of heavier insoluble particles at the bottom of a liquid is called:

Explanation:

Link:

Question (7)

Removing the clear liquid by carefully tilting a vessel after sedimentation is known as:

Explanation:

Link:

Question (8)

Which method is used to separate tea leaves from prepared tea using a strainer?

Explanation:

Link:

Question (9)

Separation of magnetic and non-magnetic materials using a magnet is called:

Explanation:

Link:

Question (10)

Churning is mainly used to obtain:

Explanation:

Link:

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