Assessment

Water Purification Techniques

Water Purification Techniques, Learn about water purification techniques, How can we purify water?, How boiling water removes bacteria and germs from water?, Distillation, Candle filtration, etc.

ninja coder

Chemistry

Grade VIII

10 plays

100 players

ninja coder

Chemistry

Grade VIII

10 plays

100 players

Worksheet

10 Qs

1.
Multiple Choice
1 pts•30 s
Boiling water helps in removing which type of impurities?
Answer choices
Heavy metals
Bacteria and germs
Sand and mud
Chlorine
2.
Multiple Choice
1 pts•30 s
Which method is most effective in removing dissolved salts from water?
Answer choices
Boiling
Filtration
Distillation
Chlorination
3.
Multiple Choice
1 pts•30 s
Which purification method uses a candle-shaped filter?
Answer choices
Distillation
Chemical disinfection
Candle filtration
Reverse osmosis
4.
Multiple Choice
1 pts•30 s
Which substance is commonly used to kill germs in water?
Answer choices
Salt
Chlorine
Alcohol
Iron
5.
Multiple Choice
1 pts•30 s
Filtration is used to remove which type of impurities?
Answer choices
Dissolved gases
Bacteria
Suspended solids
Dissolved salts
6.
Multiple Choice
1 pts•30 s
Reverse osmosis is mainly used for:
Answer choices
Removing suspended particles
Adding minerals to water
Purifying sewage water
Desalination
7.
Multiple Choice
1 pts•30 s
Which technique involves converting water to vapor and then condensing it back to liquid?
Answer choices
Filtration
Boiling
Distillation
Chlorination
8.
Multiple Choice
1 pts•30 s
Alum is commonly added during purification to help in:
Answer choices
Adding taste
Killing bacteria
Coagulation of impurities
Cooling the water
9.
Multiple Choice
1 pts•30 s
Sedimentation is used to:
Answer choices
Remove dissolved solids
Kill microorganisms
Settle heavier impurities
Add chlorine to water
10.
Multiple Choice
1 pts•30 s
Chlorination is effective in:
Answer choices
Removing solids
Removing dissolved salts
Making water tastier
Disinfecting water