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Which of the following will not give iodoform test?
- a)Ethanol
- b)Ethanal
- c)Isopropyl alcohol
- d)Benzyl alcohol
Correct answer is option 'D'. Can you explain this answer?
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Which of the following will not give iodoform test?a)Ethanolb)Ethanalc...
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Which of the following will not give iodoform test?a)Ethanolb)Ethanalc...
Iodoform Test
The iodoform test is a chemical test used to detect the presence of methyl ketones or secondary alcohols. The test is based on the reaction of iodine, sodium hydroxide, and a methyl ketone or secondary alcohol to produce a yellow precipitate of iodoform.
Iodoform Test and Alcohols
Secondary alcohols are oxidized to ketones by iodine and sodium hydroxide solution. The ketone formed then reacts with iodine and sodium hydroxide solution to form a yellow precipitate of iodoform. However, primary alcohols do not undergo oxidation with iodine and sodium hydroxide solution, and hence they do not give a positive iodoform test.
Answer Explanation
Among the given options, only benzyl alcohol is a primary alcohol, and hence it will not give a positive iodoform test. The other alcohols, ethanol, isopropyl alcohol, and ethanal, are secondary alcohols or methyl ketones, which will give a positive iodoform test.
The iodoform test is a chemical test used to detect the presence of methyl ketones or secondary alcohols. The test is based on the reaction of iodine, sodium hydroxide, and a methyl ketone or secondary alcohol to produce a yellow precipitate of iodoform.
Iodoform Test and Alcohols
Secondary alcohols are oxidized to ketones by iodine and sodium hydroxide solution. The ketone formed then reacts with iodine and sodium hydroxide solution to form a yellow precipitate of iodoform. However, primary alcohols do not undergo oxidation with iodine and sodium hydroxide solution, and hence they do not give a positive iodoform test.
Answer Explanation
Among the given options, only benzyl alcohol is a primary alcohol, and hence it will not give a positive iodoform test. The other alcohols, ethanol, isopropyl alcohol, and ethanal, are secondary alcohols or methyl ketones, which will give a positive iodoform test.
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Which of the following will not give iodoform test?a)Ethanolb)Ethanalc...
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Which of the following will not give iodoform test?a)Ethanolb)Ethanalc)Isopropyl alcohold)Benzyl alcoholCorrect answer is option 'D'. Can you explain this answer?
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Which of the following will not give iodoform test?a)Ethanolb)Ethanalc)Isopropyl alcohold)Benzyl alcoholCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following will not give iodoform test?a)Ethanolb)Ethanalc)Isopropyl alcohold)Benzyl alcoholCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following will not give iodoform test?a)Ethanolb)Ethanalc)Isopropyl alcohold)Benzyl alcoholCorrect answer is option 'D'. Can you explain this answer?.
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