EASY
Earn 100

Sewage and other waste water of towns and cities is processed for purification before letting it into a water body to prevent _____ of water.

50% studentsanswered this correctly

Important Questions on Water

MEDIUM
Science>Chemistry>Water>Potable Water
Which of these methods should not be used for the disposal of urine and faeces if no sewage system is available?
MEDIUM
Science>Chemistry>Water>Potable Water
Give a reason for the following:
Clarified water contains chlorine.
MEDIUM
Science>Chemistry>Water>Potable Water
Why is the swimming pool water chlorinated?
MEDIUM
Science>Chemistry>Water>Potable Water
Select the activity which will have no harmful effects on the quality of water.
MEDIUM
Science>Chemistry>Water>Potable Water
How to purify the polluted water?
EASY
Science>Chemistry>Water>Potable Water

Define:

Chlorination

EASY
Science>Chemistry>Water>Potable Water
Chlorine is passed through water to kill bacteria.             
MEDIUM
Science>Chemistry>Water>Potable Water
Discuss the processes involved in a sewage treatment plant in detail. 
 
EASY
Science>Chemistry>Water>Potable Water

Choose the odd one out giving reason:

Bar screens, Grit, Sand removal tank, Potable water, Sludge removal tank, wastewater treatment plant

MEDIUM
Science>Chemistry>Water>Potable Water
Choose the odd one out.
MEDIUM
Science>Chemistry>Water>Potable Water
What is chlorination?
EASY
Science>Chemistry>Water>Potable Water
Chlorine is used to sterilise clean water.
MEDIUM
Science>Chemistry>Water>Potable Water
Germs present in water can be killed by using chlorine.
MEDIUM
Science>Chemistry>Water>Potable Water
During purification of water in the waterworks department, germs are killed in this step:
MEDIUM
Science>Chemistry>Water>Potable Water

_____ is added to kill germs in the water.

EASY
Science>Chemistry>Water>Potable Water
Adding chlorine to water kills the germs.
MEDIUM
Science>Chemistry>Water>Potable Water
The process of purifying water by adding chlorine tablets is called _____.
EASY
Science>Chemistry>Water>Potable Water
Which process during the wastewater treatment kills the germs? 
 
MEDIUM
Science>Chemistry>Water>Potable Water
Name two chemicals used to disinfect water.
MEDIUM
Science>Chemistry>Water>Potable Water
What is chlorination?