Hard Water
Trending Questions
Which anions are responsible for water hardness ?
Calculate the percentage loss of mass of hydrated copper ll sulphate when completely dehydrated
What are the causes for
(a) Temporary hardness
(b) Permanent hardness
explain the uses of a sand bath and water bath
What is the advantage of a detergent over soap ?
Which salt does not cause hardness in water?
Calcium
Sodium
Magnesium
Both 1 & 3
State the disadvantages of using hard water.
The hardness of water is due to the presence of:
Does cause hardness.
Name the substances which make water (i) temporary hard (ii) permanent hard.
What are the advantages of (i) soft water (ii) hard water ?
Why does the hardness of water render it unfit for use in a
(i) boiler (ii) for washing purposes.
i) Tincture of iodine
ii) Saline solution
Ordinary air from the atmosphere contains about 21% of oxygen whereas the dissolved air in river water contains about 30%. Give a reason for this.
The hydrophobic end of Lauryl Sulphate is
How does nail polish remover wipes the polish form our nails
Ordinary air from the atmosphere contains about 21% of oxygen whereas the dissolved air in river water contains about 30%. Give a reason for this.
Would you be able to check if water is hard by using a detergent?
i) Tincture of iodine
ii) Saline solution
a) slaked lime b) washing soda.
What is a hydrated salt ?
- scaling
- rusting
- galvanising
- lathering
Name the substances which make water (i) temporary hard (ii) permanent hard.