Which of the following methods could be used at home to make water safe for drinking?
A. filtration
B. adding chlorine tablets
C. boiling
D. sedimentation

(a) all of them
(b) A and D only
(c) A only
(d) B and C

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Solution

(a) all of them

Filtration, adding chlorine tablets, boiling and sedimentation are methods that can be used at home to make water safe for drinking.

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Question 9
Which of the following procedures will give you water free from all impurities?
(a) Adding chlorine tablets
(b) Distillation
(c) Boiling
(d) Filtration

Drinking water cab be made absolutely safe by adding some:

(a) aspirin tablets

(b) iodine tablets

(d) chlorophyll tablets

Q. Which of the following methods is not a household method used for making drinking water safe?

Q. Which of the following statements are incorrect?
A. Water boils at 100°C.
B. Water than has been filtered through a muslin cloth is safe to drink.
C. Water must be boiled to kill disease causing germs.
D. Water is chlorinated to improve its taste.
E. Sedimentation and adding of alum helps the particles floating in water to settle down.
F. Water evaporates at all temperatures between 0°C and 100°C.

(a) A, B. D
(b) A, C, E
(c) B, C, F
(d) B, D

Q. Which of the following is not a method to make water safe for drinking?

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Which of the following methods could be used at home to make water safe for drinking? A. filtration B. adding chlorine tablets C. boiling D. sedimentation (a) all of them (b) A and D only (c) A only (d) B and C

(a) all of them Filtration, adding chlorine tablets, boiling and sedimentation are methods that can be used at home to make water safe for drinking.

Which of the following methods could be used at home to make water safe for drinking?
A. filtration
B. adding chlorine tablets
C. boiling
D. sedimentation

(a) all of them
(b) A and D only
(c) A only
(d) B and C

(a) all of them

Filtration, adding chlorine tablets, boiling and sedimentation are methods that can be used at home to make water safe for drinking.