Friday, June 12, 2015

CBSE Class 6 - Science - CH5 - Separation of Substances (MCQs-2)

Separation of Substances 

(MCQs)
Threshing (courtsey: wikipedia)


Q1: The method of separating substances based on size, colour and shape is called _______.

(a) Handpicking
(b) Winnowing
(c) Sieving
(d) Threshing

Q2: The process used for separating grains from stalk is called _________.

(a) Winnowing
(b) Sieving
(c) Threshing
(d) Decanting

Q3: Which method is commonly used by farmers to separate lighter husk particles from heavier seeds of grain.

(a) Winnowing
(b) Sieving
(c) Threshing
(d) Decanting


Q4: Pebbles and stones are removed from sand by ________

(a) Winnowing
(b) Sieving
(c) Threshing
(d) Decanting


Q5: The heavier component in a mixture settles after water is added to it, the process is called ________


(a) sedimentation
(b) decantation
(c) filtration
(d) condensation


Q6: In sedimentation process, the clear liquid above the settled heavier component is called ________.

(a) solvent
(b) solution
(c) supernatant liquid
(d) sediment


Q7: Transferring the clear liquid into another container using a glass rod is called ___________.

(a) sedimentation
(b) decantation
(c) filtration
(d) condensation


Q8: During filtration process, the dust particles which remain on filter paper is called _________.

(a) filter
(b) residue
(c) filtrate
(d) solution

Q9: Which method is commonly used to separate salt from water?

(a) sedimentation
(b) filtration
(c) evaporation
(d) condensation

Q10: The process of converting vapours back into liquid is called as ______.

(a) sedimentation
(b) filtration
(c) evaporation
(d) condensation


Answers:
1: (a) Handpicking
2: (c) Threshing
3: (a) Winnowing
4: (b) Sieving
5: (a) sedimentation
6: (c) supernatant liquid
7: (b) decantation
8: (b) residue
9: (c) evaporation
10: (d) condensation



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