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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A) : The acid must always be added to water with constant stirring.
Reason (R) : Mixing of an acid with water decreases the concentration of H+ ions per unit volume.
Assertion (A) : The acid must always be added to water with constant stirring.
Reason (R) : Mixing of an acid with water decreases the concentration of H+ ions per unit volume.
- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Directions: In the following questions, a statement of assertion (A) i...
- Assertion (A): True. Acid should be added to water with stirring to prevent exothermic reactions from causing splashes or eruptions.
- Reason (R): True. Adding acid to water decreases the concentration of H⁺ ions per unit volume as the solution becomes more diluted.
- The reason (R) correctly explains the safety aspect of dilution rather than the procedural necessity of adding acid to water.
- Correct choice: B. Both A and R are true, but R is not the correct explanation of A.
- Reason (R): True. Adding acid to water decreases the concentration of H⁺ ions per unit volume as the solution becomes more diluted.
- The reason (R) correctly explains the safety aspect of dilution rather than the procedural necessity of adding acid to water.
- Correct choice: B. Both A and R are true, but R is not the correct explanation of A.
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Directions: In the following questions, a statement of assertion (A) i...
Assertion (A): The acid must always be added to water with constant stirring.
Reason (R): Mixing of an acid with water decreases the concentration of H+ ions per unit volume.
Analysis of Assertion (A)
- Adding acid to water is a safety procedure.
- This method minimizes the risk of exothermic reactions that could occur if water were added to acid, potentially causing splattering or violent reactions.
- Constant stirring helps to evenly distribute the acid in the water, preventing localized concentration and heat buildup.
Analysis of Reason (R)
- When acid is mixed with water, the concentration of H+ ions does not actually decrease; rather, it becomes more diluted.
- The reason states that mixing decreases concentration, which is misleading. When acid is diluted in water, the total amount of acid remains constant, but the H+ ions are spread over a larger volume, leading to a decrease in concentration per unit volume.
Conclusion
- Both statements are true: A is true regarding safety, and R is true in its context but misleading in its explanation.
- Therefore, the correct answer is option 'B': Both A and R are true, but R is not the correct explanation of A.
Key Takeaway
- Always add acid to water to ensure safety, while understanding that the reasoning given is not accurate in explaining why this procedure is necessary.
Reason (R): Mixing of an acid with water decreases the concentration of H+ ions per unit volume.
Analysis of Assertion (A)
- Adding acid to water is a safety procedure.
- This method minimizes the risk of exothermic reactions that could occur if water were added to acid, potentially causing splattering or violent reactions.
- Constant stirring helps to evenly distribute the acid in the water, preventing localized concentration and heat buildup.
Analysis of Reason (R)
- When acid is mixed with water, the concentration of H+ ions does not actually decrease; rather, it becomes more diluted.
- The reason states that mixing decreases concentration, which is misleading. When acid is diluted in water, the total amount of acid remains constant, but the H+ ions are spread over a larger volume, leading to a decrease in concentration per unit volume.
Conclusion
- Both statements are true: A is true regarding safety, and R is true in its context but misleading in its explanation.
- Therefore, the correct answer is option 'B': Both A and R are true, but R is not the correct explanation of A.
Key Takeaway
- Always add acid to water to ensure safety, while understanding that the reasoning given is not accurate in explaining why this procedure is necessary.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.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 Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.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 Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.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 Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.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 Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.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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Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A) :The acid must always be added to water with constant stirring.Reason (R) :Mixing of an acid with water decreases the concentration of H+ ions per unit volume.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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