All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
JEE Exam  >  JEE Questions  >  The temporary hardness of water due to calciu... Start Learning for Free
The temporary hardness of water due to calcium carbonate can be removed by adding –
  • a)
    CaCO3
  • b)
    Ca(OH)2
  • c)
    CaCl2
  • d)
    HCl
Correct answer is option 'B'. Can you explain this answer?
Clear all your JEE doubts with EduRev
Verified Answer
The temporary hardness of water due to calcium carbonate can be remove...
Temporary hardness of water is due to presence of bicarbonates of Ca and Mg and it is removed by adding Ca(OH)2 to hard water and precipitating these soluble bicarbonates in the form of insoluble salts.
View all questions of this test
Most Upvoted Answer
The temporary hardness of water due to calcium carbonate can be remove...
Sodium carbonate (washing soda) to the water. When sodium carbonate is added to hard water containing calcium carbonate, it reacts with the calcium ions to form insoluble calcium carbonate which can then be removed by filtration or settling. The chemical equation for this reaction is:

Na2CO3 + CaCO3 → 2NaCO3 + CaCO3

The resulting sodium carbonate can also be removed by boiling the water, which causes the sodium carbonate to decompose into sodium oxide and carbon dioxide, leaving behind soft water. The chemical equation for this reaction is:

2Na2CO3 → 4Na + 2CO2 + O2
Explore Courses for JEE exam

Similar JEE Doubts

When a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as, R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing. Q. A blue colour can be imparted to glass by use of

When a mixture of sodium carbonate and calcium carbonate is fused with silica at 1500C, a liquid consisting silicates of sodium and calcium is formed. When this liquid is cooled, it becomes viscous and eventually ceases to flow. It becomes solid and called glass. By varying the proportions of the three basic ingredients and by adding other substances, the properties of glass can be altered. An approximate formula for ordinary glass may be given as,R2O.MO.6SiO2Where R = Na or K and M = Ca, Ba, Zn and Pb.SiO2 may be replaced by Al2O3, B2O3, P2O5.Coloured glasses are obtained by adding certain metallic oxides or salts in the fused mass. Class is attacked by HF and this property is used to make marking on the glass. This is known as etching.The glass if cooled rapidly becomes brittle and fragile. The articles of glass are cooled neither very slowly nor very rapidly. The articles are cooled gradually. This process is termed annealing.Q.A blue colour can be imparted to glass by use of

Top Courses for JEEView all

Top Courses for JEE

The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer?
Question Description
The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer?.
Solutions for The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The temporary hardness of water due to calcium carbonate can be removed by adding –a)CaCO3b)Ca(OH)2c)CaCl2d)HClCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses
SaveJoin the Discussion on the App for FREE
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup