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Assertion : If human urine is allowed to stand for some time, it smells strongly of ammonia.
Reason : Main constituent of human urine is ammonia.
Reason : Main constituent of human urine is ammonia.
- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)If Assertion is true but Reason is false.
- d)If both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Assertion : If human urine is allowed to stand for some time, it smell...
Urea is the chief nitrogenous constituent of human urine, though it possesses small amount of ammonia. But when the urine is allowed to stand for sometime, bacterial degradation occurs and it leads to the production of ammonia from urine, and thus smells strongly.
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Assertion : If human urine is allowed to stand for some time, it smell...
Assertion: Human Urine and Ammonia Smell
When human urine is allowed to stand for some time, it develops a strong smell of ammonia. This phenomenon can be explained by the biochemical processes occurring in urine over time.
Reason: Constituents of Human Urine
The assertion states that the main constituent of human urine is ammonia; however, this is not entirely accurate. While ammonia is present in urine, it is not the main constituent. The primary components of human urine include urea, creatinine, uric acid, and various ions such as sodium and potassium.
Explanation of the Assertion
- **Decomposition of Urea**: When urine stands, urea, which is the most abundant organic compound in urine, can decompose through the action of bacteria. This process converts urea into ammonia and carbon dioxide.
- **Increase in Ammonia Concentration**: As urea breaks down, the concentration of ammonia increases, leading to the strong ammonia smell associated with stale urine.
Conclusion
- **Assertion True**: The assertion regarding the smell of ammonia in standing urine is correct.
- **Reason False**: The reason provided is misleading as it incorrectly identifies ammonia as the main constituent of urine.
Thus, the correct answer is option 'C': "If Assertion is true but Reason is false."
This highlights the importance of understanding the biochemical processes in urine and the role of different compounds within it.
When human urine is allowed to stand for some time, it develops a strong smell of ammonia. This phenomenon can be explained by the biochemical processes occurring in urine over time.
Reason: Constituents of Human Urine
The assertion states that the main constituent of human urine is ammonia; however, this is not entirely accurate. While ammonia is present in urine, it is not the main constituent. The primary components of human urine include urea, creatinine, uric acid, and various ions such as sodium and potassium.
Explanation of the Assertion
- **Decomposition of Urea**: When urine stands, urea, which is the most abundant organic compound in urine, can decompose through the action of bacteria. This process converts urea into ammonia and carbon dioxide.
- **Increase in Ammonia Concentration**: As urea breaks down, the concentration of ammonia increases, leading to the strong ammonia smell associated with stale urine.
Conclusion
- **Assertion True**: The assertion regarding the smell of ammonia in standing urine is correct.
- **Reason False**: The reason provided is misleading as it incorrectly identifies ammonia as the main constituent of urine.
Thus, the correct answer is option 'C': "If Assertion is true but Reason is false."
This highlights the importance of understanding the biochemical processes in urine and the role of different compounds within it.
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Assertion : If human urine is allowed to stand for some time, it smells strongly of ammonia.Reason : Main constituent of human urine is ammonia.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?
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Assertion : If human urine is allowed to stand for some time, it smells strongly of ammonia.Reason : Main constituent of human urine is ammonia.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion : If human urine is allowed to stand for some time, it smells strongly of ammonia.Reason : Main constituent of human urine is ammonia.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion : If human urine is allowed to stand for some time, it smells strongly of ammonia.Reason : Main constituent of human urine is ammonia.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
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