11- In ………………….method, the heavier component in a mixture can be separated after adding water to it.
(A) None of the below
(B) Filtration
(C) Decantation
(D) Sedimentation
12- When the dusty water is removed from the mixture that process is called …………….
(A) filtration
(B) sieving
(C) sedimentation
(D) decantation
13- Oil and water can be separated by ………………….method.
(A) decantation
(B) sedimentation
(C) filtration
(D) none of the above
14- Which of the following method is used for separating tea leaves from prepared tea?
(A) Decantation
(B) Filtration
(C) Sedimentation
(D) Condensation
15- Which of the following can be separated by using filtration paper?
- Fruits and vegetables juice
- Muddy water
- Oil from water
- Cottage cheese
(A) All the options are correct
(B) Option 1, 2 and 3 are correct
(C) Option 1, 2 and 4 are correct
(D) None of the above
16- The process of conservation of water into its vapour is called …………………..
(A) decantation
(B) condensation
(C) evaporation
(D) none of the above
17- The process of evaporation is a continuous process wherever ………………is present.
(A) water
(B) air
(C) oil
(D) sand
18- We obtain ……………….from water when sea water is allowed to sand in shallow pit.
(A) soil
(B) salt
(C) water
(D) oxygen
19- Which of the following substance can be separated through decantation or filtration?
(A) oil
(B) salt
(C) sand
(D) both A and C
20- The process of conversion of water vapour into its liquid form is called ……………..
(A) decantation
(B) sedimentation
(C) evaporation
(D) condensation
ANSWERS:
11-(D), 12-(D), 13-(A), 14-(B), 15-(C), 16-(C), 17-(A), 18-(B), 19-(D), 20-(D)