MEDIUM
9th ICSE
IMPORTANT
Earn 100

What are the advantages of hard water?

Important Questions on Water

HARD
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 11
What are stalagmites and stalactites? How are they formed?
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 12

Name the substances which give a water temporary hardness.

 

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 12
Name the substances which give water permanent hardness?
MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 13
Give equations to show what happens when temporary hard water is boiled.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 13
Give equations to show what happens when temporary hard water is treated with slaked lime.
MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 14

State the disadvantages of using hard water.

 

MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 15
What is soap?  What is it used for?
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 3 - Water>EXERCISE 3(C)>Q 16
What is the advantage of soap over detergent?