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Which of the following statements is correct?
- a)Temporary hardness of water can be removed by boiling.
- b)Permanent hardness of water can be removed by boiling.
- c)Temporary and permanent hardness of water can be removed by boiling.
- d)Neither temporary nor permanent hardness of water can be removed by boiling.
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following statements is correct?a)Temporary hardness of w...
Temporary hardness: It is due to the presence of soluble bicarbonates of calcium and magnesium. It can be removed by boiling. During boiling, the soluble Mg(HCO3)2 present in water is converted into insoluble Mg(OH)2 and Ca(HCO3)2 is changed to insoluble CaCO3 which settle at the bottom as precipitates. These precipitates can be removed by filtration. Filtrate thus obtained will be soft water.
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Which of the following statements is correct?a)Temporary hardness of w...
Read ncert ,temporary hardness can remove by boiling but permanent cant ....
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Which of the following statements is correct?a)Temporary hardness of w...
Explanation:
Temporary hardness of water:
Temporary hardness of water is caused by the presence of dissolved calcium bicarbonate (Ca(HCO3)2) and magnesium bicarbonate (Mg(HCO3)2) ions in water. When water with temporary hardness is heated, the bicarbonate ions decompose to form insoluble calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) precipitates. These precipitates can be easily removed by filtration or by boiling the water.
Permanent hardness of water:
Permanent hardness of water is caused by dissolved calcium sulfate (CaSO4) and magnesium sulfate (MgSO4) ions. Unlike temporary hardness, these ions cannot be removed by boiling because they do not decompose or form precipitates. Therefore, boiling does not remove permanent hardness from water.
Explanation of the given options:
a) Temporary hardness of water can be removed by boiling.
- This statement is correct because boiling causes the bicarbonate ions responsible for temporary hardness to decompose and form insoluble precipitates, which can then be removed.
b) Permanent hardness of water can be removed by boiling.
- This statement is incorrect because boiling does not remove permanent hardness. The dissolved calcium sulfate and magnesium sulfate ions responsible for permanent hardness do not decompose or form precipitates upon boiling.
c) Temporary and permanent hardness of water can be removed by boiling.
- This statement is incorrect because while boiling can remove temporary hardness, it cannot remove permanent hardness.
d) Neither temporary nor permanent hardness of water can be removed by boiling.
- This statement is incorrect because boiling can remove temporary hardness, but not permanent hardness.
Conclusion:
The correct statement is a) Temporary hardness of water can be removed by boiling.
Temporary hardness of water:
Temporary hardness of water is caused by the presence of dissolved calcium bicarbonate (Ca(HCO3)2) and magnesium bicarbonate (Mg(HCO3)2) ions in water. When water with temporary hardness is heated, the bicarbonate ions decompose to form insoluble calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) precipitates. These precipitates can be easily removed by filtration or by boiling the water.
Permanent hardness of water:
Permanent hardness of water is caused by dissolved calcium sulfate (CaSO4) and magnesium sulfate (MgSO4) ions. Unlike temporary hardness, these ions cannot be removed by boiling because they do not decompose or form precipitates. Therefore, boiling does not remove permanent hardness from water.
Explanation of the given options:
a) Temporary hardness of water can be removed by boiling.
- This statement is correct because boiling causes the bicarbonate ions responsible for temporary hardness to decompose and form insoluble precipitates, which can then be removed.
b) Permanent hardness of water can be removed by boiling.
- This statement is incorrect because boiling does not remove permanent hardness. The dissolved calcium sulfate and magnesium sulfate ions responsible for permanent hardness do not decompose or form precipitates upon boiling.
c) Temporary and permanent hardness of water can be removed by boiling.
- This statement is incorrect because while boiling can remove temporary hardness, it cannot remove permanent hardness.
d) Neither temporary nor permanent hardness of water can be removed by boiling.
- This statement is incorrect because boiling can remove temporary hardness, but not permanent hardness.
Conclusion:
The correct statement is a) Temporary hardness of water can be removed by boiling.
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Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer?
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Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer?.
Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer?.
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Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Which of the following statements is correct?a)Temporary hardness of water can be removed by boiling.b)Permanent hardness of water can be removed by boiling.c)Temporary and permanent hardness of water can be removed by boiling.d)Neither temporary nor permanent hardness of water can be removed by boiling.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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