EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

What is a coagulant used for, in water treatment plants?

Important Questions on Air and Water

EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 3
Why is chlorine such an important part of the treatment in water plant?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 4
A fluoride compound may be added to water. Why?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 5
Some water can be harmful even after treatment. Explain.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 6
You need a drink of water, but there is only dirty river water. What will you do to clean river water?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Checkup on Chapter 15>Q □
Name the gases in clean air, and give the percentages for the two main gases present.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Checkup on Chapter 15>Q □
Explain why oxygen is so important to us?
 
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Checkup on Chapter 15>Q □
Describe an experiment to find the % of oxygen in air.
 
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Checkup on Chapter 15>Q □
Name the fossil fuels and give examples of their use as fuels.