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EXERCISE : CHAPTER 5

Water and Solution

The process of evaporation is part of the

QUESTION 1

A. Water cycle

B. Nitrogen cycle

C. Carbon cycle

D. Oxygen cycle

A boy was stung by a bee. Which of the following substances can be applied to neutralize the sting ?

QUESTION 2

A. Water B. Toothpaste

C. Vinegar D. Dilute acid

Which of the following substances is used in swimming pools to kill microorganisms ?

QUESTION 3

A. Alum B. Chlorine

C. Blue pigment D. Activated carbon powder

The coagulation process in the water treatment system comes after

QUESTION 4

A. Sedimentation

B. Filtration

C. Aeration D. Chlorination

Which of the following causes of water pollution results in rapid growth of algae leading to the reduction of oxygen level in the water ?

QUESTION 5

A. Industrial waste B. Agriculture waste

C. Domestic waste D. Deforestation

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