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Read the passage given below and answer the following questions:
Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.
Q. Name a method by which both aldehydes and ketones can be prepared.
- a)Reduction of carboxylic acids
- b)Ozonolysis of alkenes
- c)Oxidation of alcohols
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
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Read the passage given below and answer the following questions:Aldeh...
Method of preparing aldehydes and ketones:
Introduction:
Aldehydes and ketones are two major classes of organic compounds containing carbonyl groups. Both aldehydes and ketones can be prepared by various methods.
Method 1: Reduction of carboxylic acids:
- Aldehydes and ketones can be prepared by the reduction of carboxylic acids.
- Carboxylic acids can be reduced to aldehydes by using a strong reducing agent such as lithium aluminum hydride (LiAlH4) or sodium borohydride (NaBH4).
- Further reduction of aldehydes using the same reducing agents can convert them into primary alcohols.
- Ketones can also be prepared by the reduction of carboxylic acids, followed by further reduction of the resulting aldehyde.
Method 2: Ozonolysis of alkenes:
- Ozonolysis of alkenes can lead to the formation of aldehydes and ketones.
- During ozonolysis, ozone (O3) is reacted with an alkene to form an ozonide intermediate.
- The ozonide intermediate can be further reacted with reducing agents such as zinc (Zn) or dimethyl sulfide (Me2S) to yield aldehydes or ketones, depending on the structure of the alkene.
Method 3: Oxidation of alcohols:
- Aldehydes can be prepared by the oxidation of primary alcohols.
- Primary alcohols can be oxidized using mild oxidizing agents such as pyridinium chlorochromate (PCC) or potassium permanganate (KMnO4) to form aldehydes.
- Ketones can be prepared by the oxidation of secondary alcohols using stronger oxidizing agents such as potassium dichromate (K2Cr2O7) or potassium permanganate (KMnO4).
Method 4: All of the above:
- The correct answer to the question is option 'D' - All of the above.
- This means that both aldehydes and ketones can be prepared by the reduction of carboxylic acids, ozonolysis of alkenes, and oxidation of alcohols.
- These methods provide different routes for synthesizing aldehydes and ketones depending on the starting materials available and the desired products.
Conclusion:
- Aldehydes and ketones can be prepared by various methods including the reduction of carboxylic acids, ozonolysis of alkenes, and oxidation of alcohols.
- Each method offers a different approach to the synthesis of aldehydes and ketones, providing flexibility in organic synthesis.
Introduction:
Aldehydes and ketones are two major classes of organic compounds containing carbonyl groups. Both aldehydes and ketones can be prepared by various methods.
Method 1: Reduction of carboxylic acids:
- Aldehydes and ketones can be prepared by the reduction of carboxylic acids.
- Carboxylic acids can be reduced to aldehydes by using a strong reducing agent such as lithium aluminum hydride (LiAlH4) or sodium borohydride (NaBH4).
- Further reduction of aldehydes using the same reducing agents can convert them into primary alcohols.
- Ketones can also be prepared by the reduction of carboxylic acids, followed by further reduction of the resulting aldehyde.
Method 2: Ozonolysis of alkenes:
- Ozonolysis of alkenes can lead to the formation of aldehydes and ketones.
- During ozonolysis, ozone (O3) is reacted with an alkene to form an ozonide intermediate.
- The ozonide intermediate can be further reacted with reducing agents such as zinc (Zn) or dimethyl sulfide (Me2S) to yield aldehydes or ketones, depending on the structure of the alkene.
Method 3: Oxidation of alcohols:
- Aldehydes can be prepared by the oxidation of primary alcohols.
- Primary alcohols can be oxidized using mild oxidizing agents such as pyridinium chlorochromate (PCC) or potassium permanganate (KMnO4) to form aldehydes.
- Ketones can be prepared by the oxidation of secondary alcohols using stronger oxidizing agents such as potassium dichromate (K2Cr2O7) or potassium permanganate (KMnO4).
Method 4: All of the above:
- The correct answer to the question is option 'D' - All of the above.
- This means that both aldehydes and ketones can be prepared by the reduction of carboxylic acids, ozonolysis of alkenes, and oxidation of alcohols.
- These methods provide different routes for synthesizing aldehydes and ketones depending on the starting materials available and the desired products.
Conclusion:
- Aldehydes and ketones can be prepared by various methods including the reduction of carboxylic acids, ozonolysis of alkenes, and oxidation of alcohols.
- Each method offers a different approach to the synthesis of aldehydes and ketones, providing flexibility in organic synthesis.
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Read the passage given below and answer the following questions:Aldeh...
Both aldehydes and ketones can be prepared by all these methods.
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Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer?.
Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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ample number of questions to practice Read the passage given below and answer the following questions:Aldehydes, ketones and carboxylic acids are few of the major classes of organic compounds containing carbonyl groups. Aldehydes are prepared by dehydrogenation or controlled oxidation of primary alcohols and controlled or selective reduction of acyl halides. Ketones are prepared by oxidation of secondary alcohols and hydration of alkynes. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes by hydrolysis of nitriles and by treatment of Grignard reagents with carbon dioxide.Q. Name a method by which both aldehydes and ketones can be prepared.a)Reduction of carboxylic acidsb)Ozonolysis of alkenesc)Oxidation of alcoholsd)All of the aboveCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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