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Assertion: HCl gas does not change the colour of dry blue litmus paper.
Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ ions.
Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ ions.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
- e)Both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Assertion: HCl gas does not change the colour of dry blue litmus paper...
Assertion and Reason Overview
The assertion states that HCl gas does not change the color of dry blue litmus paper, while the reason explains that HCl gas dissolves in the water present in wet litmus paper to form H+ ions.
Analysis of the Assertion (A)
- Dry Blue Litmus Paper:
- Dry litmus paper does not contain any water.
- Without moisture, HCl gas cannot dissolve or dissociate into H+ ions.
- Color Change:
- Since there are no H+ ions from HCl in dry conditions, there will be no color change in the blue litmus paper.
Analysis of the Reason (R)
- Dissolution of HCl:
- HCl is a strong acid and readily dissolves in water, producing H+ ions.
- This dissolution occurs only in the presence of moisture.
- Correct Explanation:
- While the reason correctly states the behavior of HCl in wet litmus paper, it does not explain why dry litmus paper remains unchanged.
Conclusion
- Both Statements:
- Both the assertion (A) and reason (R) are true statements.
- However, reason (R) does not logically explain the assertion (A) since the absence of moisture in dry litmus paper prevents any interaction with HCl gas.
Thus, the correct option is B: Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of assertion (A).
The assertion states that HCl gas does not change the color of dry blue litmus paper, while the reason explains that HCl gas dissolves in the water present in wet litmus paper to form H+ ions.
Analysis of the Assertion (A)
- Dry Blue Litmus Paper:
- Dry litmus paper does not contain any water.
- Without moisture, HCl gas cannot dissolve or dissociate into H+ ions.
- Color Change:
- Since there are no H+ ions from HCl in dry conditions, there will be no color change in the blue litmus paper.
Analysis of the Reason (R)
- Dissolution of HCl:
- HCl is a strong acid and readily dissolves in water, producing H+ ions.
- This dissolution occurs only in the presence of moisture.
- Correct Explanation:
- While the reason correctly states the behavior of HCl in wet litmus paper, it does not explain why dry litmus paper remains unchanged.
Conclusion
- Both Statements:
- Both the assertion (A) and reason (R) are true statements.
- However, reason (R) does not logically explain the assertion (A) since the absence of moisture in dry litmus paper prevents any interaction with HCl gas.
Thus, the correct option is B: Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of assertion (A).
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Assertion: HCl gas does not change the colour of dry blue litmus paper...
Assertion: "HCl gas does not change the colour of dry blue litmus paper.: This statement is true. Dry HCl gas cannot release hydrogen ions (H+) because it needs to be dissolved in water to form hydronium ions (H3O+), which cause the acidic effect. Therefore, HCl gas will not change the colour of dry blue litmus paper.
Reason: "HCl gas dissolves in the water present in wet litmus paper to form H+ ions.": This statement is also true. When HCl gas dissolves in the water present on wet litmus paper, it dissociates to form H+ ions, which can then change the colour of blue litmus to red, indicating an acidic environment.
Both the assertion and reason are true, but the reason does not correctly explain the assertion since the assertion pertains to dry litmus paper, while the reason refers to wet litmus paper.
Thus, the correct answer is:
Option 2: Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
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Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?.
Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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ample number of questions to practice Assertion: HCl gas does not change the colour of dry blue litmus paper.Reason: HCl gas dissolves in the water present in wet litmus paper to from H+ions.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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