Water Worksheet-4

Water Worksheet-4

 

Multiple-Choice Question:

  1. Water is a _____ compound.

(A) Acidic             (B) Neutral           (C) Basic               (D) Amphoteric

 

  1. The melting point of ice is :

(A) 0°C                 (B) 37°C                (C) 100°C             (D) 4°C

 

  1. The fizzing observed while opening a soda bottle is due to:

(A) Carbon dioxide bubbles out due to decrease in pressure

(B) Oxygen enters the bottle as soon as the can is opened

(C) Fizzing is just due to shaking of particles of soda as in other liquids

(D) One of these

 

  1. Which property of water is used while washing clothes?

(A) Odour            (B) Colour            (C) Solubility       (D) None of these

 

  1. Hard water contains:

(A) Bicarbonates or Chlorides of calcium & magnesium

(B) Chlorides of sodium & potassium

(C) Bicarbonates sodium & potassium

 

  1. Freezing point of water is 0°C at:

(A) 76 cm of Hg                               (B) 760 cm of Hg

(C) 760 mm of Hg                            (D) 7.6 mm of Hg

 

  1. Which of the following process is not involved in the purification of drinking water?

(A) Sedimentation                           (B) Filtration

(C) Chlorination                               (D) Distillation

 

  1. On electrolysis of water hydrogen gas:

(A) Is deposited at cathode

(B) Is deposited at anode

(C) Is deposited on the walls of electrolytic container

(D) Escapes out

 

  1. Defecation of living beings:

(A) Causes water borne diseases

(B) Causes pollution of underground water

(C) Favours growth of algae

(D) None of these

 

Answer Key:

  1. (B)
  2. (A)
  3. (A)
  4. (C)
  5. (A)
  6. (C)
  7. (D)
  8. (A)
  9. (A)