Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 350 off


Hard and soft water

7 years ago


Answers : (1)


Hard and soft water: - natural water contains dissolved salts. Depending upon its behavior towards soap solution, water may be classified s soft water or hard water.

(a) Soft Water: - Water which produces lather with soap solution readily is called soft water. For example distilled water, rain water and demineralised water.

(b) Hard Water: - Water which does not produce lather with soap solution readily is called hard water. For example, sea water, river water, well water and tap water.

Type of hardness of water: - the hardness of water is of two types:- temporary hardness and permanent hardness.

(a) Temporary hardness: - This type of hardness in water is due to the presence of bicarbonates of calcium and magnesium dissolved in it. The hardness is called temporary because it can be very easily removed by simple boiling the hard water for some time. Temporary hardness is also called carbonate hardness.


(b) Permanent hardness: - This hardness is due to the presence of chlorides and sulphates of calcium and magnesium dissolved in water. Since the hardness cannot be easily removed, it is therefore, called permanent hardness. The permanent hardness is also called non-carbonate hardness.

7 years ago

Post Your Answer

Other Related Questions on Inorganic Chemistry

state kohlrausch law of independent migration of ions? write one of its application
This principle is known as Kohlrausch's law of independent migration , which states that in the limit of infinite dilution, Each ionic species makes a contribution to the conductivity of...
Umakant biswal 17 days ago
Liquation of which gaseous substance will arise as a result of momentum imbalance in electronic distribution? (1) Ammonia (g) (2) Carbon dioxide (g) (3) Na+(g) Cl–(g) (4) Xenon (gas)
But bro! the answer is not that.... Answer given is Xe...and I feel the question is taking about London dispersive forces, hence the answer may be Xe...
Giri sripathi 25 days ago
(3) option. Na+ (g) Cl- (g) as only this compounnd is inic in nature. Rest are covalent ones like NH3 , Xe(g) and CO2.
Vikas TU 25 days ago
How the S-character increases the electronegativity of an atom ?
Due to the spherical – structure shape of s – orbitals unlike p – orbitals it is more closer to nucleus and hence nuclear charge compare to p orbitals which is more elongaated the elctron...
Vikas TU 15 days ago
-R effect of -COOR is greater than -COOH. What is the best reason behind it.
Simple answer: in Ester that is -COOR there is R group that is the combination carbon and hydrogen atoms. And -R group always shows +R effect thus decreases -R effect.
Vikas TU 28 days ago
R is a alkyl group and so it is a electron pushing group and so t shows -R effect much better than H COO
2 days ago
since “R”(Alkyl) group is +R group so decrease -R effect while H doesnot hence -R effect of -COOR is greater than -COOH.
2 days ago
Give a daily life example for adiabatic system and isolated system.
@ maradana adiabatic system is a system in which no heat will be sent in or out , so, as an real life example u can take the example of thermoflask , of hotpot , in which the stored...
Umakant biswal one month ago
is it possible to convert methanol to ethanol & vice versa with bulk quantity say 4 ton?Would the reaction be harmful because of large volume conversion?Will it leave any residue that will...
Hi, already someone has answered this question. pls check:
Vikas TU one month ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,750 off

Get extra R 350 off

More Questions On Inorganic Chemistry

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details