Air, Water & Weather Worksheet-6

Air, Water & Weather Worksheet-6

 

Multiple Choice Questions:

  1. Which type of water should be stored in clean and covered pots or bottles?

(a) Tap                         (b) Boiled

 

  1. Which of the following is not the method of purifying water?

(a) Sedimentation     (b) Decantation         (c) Evaporation

 

  1. Which of the following is not the method of purifying water?

(a) Chlorination         (b) Condensation      (c) Filtration

 

  1. What is the name of the process in which the insoluble impurities settle down?

(a) Sedimentation     (b) Decantation         (c) Evaporation

 

  1. What is the name of the process in which the water is gently poured after sedimentation? 

(a) Boiling                   (b) Decantation         (c) Filtration

 

  1. Decanted water has _____ of impurities than the filtered water.

(a) more                      (b) less

 

  1. Which of the following is a better process than decantation to purify water?

(a) Boiling                   (b) Decantation         (c) Filtration

 

  1. In which process, water is passed through a filter paper?

(a) Chlorination         (b) Condensation      (c) Filtration

 

  1. What is the name of the process in which water is cleaned by passing it through filter paper?

(a) Boiling                   (b) Decantation         (c) Filtration

 

  1. Which of the following is a gas that kills germs and purifies the water?

(a) Chlorine                (b) Iodine                    (c) Oxygen

 

Answer Key:

(1)-b; (2)-c; (3)-b; (4)-a; (5)-b; (6)-a; (7)-c; (8)-c; (9)-c; (10)-a