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FAQs on Question Bank (Solutions) : Aldehydes & Ketones - Chemistry Class 12 - NEET

1. What are aldehydes and ketones?
Ans. Aldehydes and ketones are organic compounds that contain a carbonyl group (-C=O). Aldehydes have the carbonyl group at the end of a carbon chain, while ketones have it in the middle of the chain. They are important functional groups found in various organic molecules.
2. How are aldehydes and ketones named?
Ans. Aldehydes are named by replacing the -e ending of the parent alkane with -al. The carbon chain is numbered starting from the aldehyde carbon. Ketones are named by replacing the -e ending of the parent alkane with -one. The carbon chain is numbered starting from the carbonyl carbon.
3. What are some common reactions of aldehydes and ketones?
Ans. Aldehydes and ketones undergo several important reactions. Some common reactions include oxidation, reduction, nucleophilic addition, and condensation reactions. They can also undergo reactions to form hemiacetals, acetals, and enols.
4. How are aldehydes and ketones distinguished from each other?
Ans. Aldehydes and ketones can be distinguished using various tests. One of the commonly used tests is the Tollens' test, where aldehydes give a silver mirror when treated with Tollens' reagent, while ketones do not react. Another test is the Fehling's test, where aldehydes give a red precipitate while ketones do not.
5. What are some important applications of aldehydes and ketones?
Ans. Aldehydes and ketones have various applications in different fields. Some important applications include their use as solvents, preservatives, flavoring agents, and in the production of pharmaceuticals, plastics, and dyes. They are also used in organic synthesis for the preparation of various compounds.
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