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An organic compound X having molecular formula C5H10O yields phenyl hydrazone and gives negative response to the iodoform test and tollen test. It produces n -pentane on reduction X could be
- a)n-amyl alcohol
- b)pentanal
- c)2-pentanone
- d)3-pentanone
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
An organic compound X having molecular formula C5H10O yields phenyl hy...
It doesn't reduce tollen's reagent,so it is not aldehyde. Then it is a ketone...it gives negative iodoform test, that means it doesn't have methyl ketone. so the possibility is 3 pentanone
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An organic compound X having molecular formula C5H10O yields phenyl hy...
Explanation:
The given organic compound X has a molecular formula C5H10O. To determine the possible identity of X, we need to analyze the given information.
1. Formation of phenyl hydrazone:
The compound X reacts with phenylhydrazine (C6H5NHNH2) to form a phenyl hydrazone. This reaction is commonly used for the identification of carbonyl compounds. The presence of a carbonyl group (C=O) is necessary for this reaction to occur.
2. Negative response to the iodoform test:
The iodoform test is used to detect the presence of a methyl ketone (CH3CO-) or an alcohol compound with a methyl group (CH3-) attached to a carbonyl group. When the iodoform test is positive, a yellow precipitate of iodoform (CHI3) is formed. In this case, the compound X gives a negative response to the iodoform test, indicating the absence of a methyl ketone or an alcohol compound with a methyl group.
3. Negative response to the Tollens test:
The Tollens test is used to detect the presence of an aldehyde compound. In this test, an aldehyde reacts with Tollens reagent (ammoniacal silver nitrate) to form a silver mirror on the inner surface of the test tube. A negative response to the Tollens test indicates the absence of an aldehyde group.
4. Formation of n-pentane on reduction:
When compound X is reduced, it yields n-pentane. This suggests that compound X is a ketone or an aldehyde, as alcohols do not produce hydrocarbons upon reduction.
Conclusion:
Based on the given information, we can conclude that compound X is a ketone, as it does not give a positive response to the iodoform test or the Tollens test. Among the given options, only 3-pentanone (also known as diethyl ketone) has the molecular formula C5H10O. Therefore, the correct answer is option (D) 3-pentanone.
The given organic compound X has a molecular formula C5H10O. To determine the possible identity of X, we need to analyze the given information.
1. Formation of phenyl hydrazone:
The compound X reacts with phenylhydrazine (C6H5NHNH2) to form a phenyl hydrazone. This reaction is commonly used for the identification of carbonyl compounds. The presence of a carbonyl group (C=O) is necessary for this reaction to occur.
2. Negative response to the iodoform test:
The iodoform test is used to detect the presence of a methyl ketone (CH3CO-) or an alcohol compound with a methyl group (CH3-) attached to a carbonyl group. When the iodoform test is positive, a yellow precipitate of iodoform (CHI3) is formed. In this case, the compound X gives a negative response to the iodoform test, indicating the absence of a methyl ketone or an alcohol compound with a methyl group.
3. Negative response to the Tollens test:
The Tollens test is used to detect the presence of an aldehyde compound. In this test, an aldehyde reacts with Tollens reagent (ammoniacal silver nitrate) to form a silver mirror on the inner surface of the test tube. A negative response to the Tollens test indicates the absence of an aldehyde group.
4. Formation of n-pentane on reduction:
When compound X is reduced, it yields n-pentane. This suggests that compound X is a ketone or an aldehyde, as alcohols do not produce hydrocarbons upon reduction.
Conclusion:
Based on the given information, we can conclude that compound X is a ketone, as it does not give a positive response to the iodoform test or the Tollens test. Among the given options, only 3-pentanone (also known as diethyl ketone) has the molecular formula C5H10O. Therefore, the correct answer is option (D) 3-pentanone.
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An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer?
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An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer?.
An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An organic compound X having molecular formula C5H10O yields phenyl hydrazoneand gives negative response to the iodoform test and tollentest. It produces n -pentane on reduction X could bea)n-amyl alcoholb)pentanalc)2-pentanoned)3-pentanoneCorrect answer is option 'D'. Can you explain this answer?.
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