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IMPORTANT QUESTIONS OF ALDEHYDE KETONE AND CARBOXYLIC ACID

Here are some previous year questions from the CBSE Class 12th board exams for the topic of Aldehydes, Ketones and Carboxylic Acids: Explain the following reactions giving the structures of the products and write the mechanism of each reaction: (i) Grignard reagent with aldehyde (ii) Acid-catalysed hydration of alkenes to form aldehydes and ketones Name the following compounds: (i) CH3CHO (ii) CH3CH2CHO (iii) CH3COCH3 (iv) C6H5CHO Describe the following reactions with an example of each: (i) Cannizzaro reaction (ii) Aldol condensation Write chemical equations for the following reactions: (i) Oxidation of propanal (ii) Reduction of a ketone with sodium borohydride Explain the following reactions giving the structures of the products and write the mechanism of each reaction: (i) Esterification reaction (ii) Saponification reaction Explain the following with an example of each: (i) Nucleophilic addition reaction (ii) Nucleophilic substitution reaction Explain the following with an example...
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10 MOST IMPORTANT QUESTION FOR PHYSICS BOARD CLASS 12

  What is the electric field intensity at a point P located at a distance of 20 cm from a point charge of 10 μC? State the principle of a transformer. Explain with the help of a labeled diagram how a step-up transformer works. Explain the construction and working of a cyclotron. State Gauss's law for electric fields. How is it different from Coulomb's law? What is an electromagnetic wave? Explain the properties of an electromagnetic wave. What are the factors affecting the resistance of a conductor? Explain. What is the meaning of the term 'semiconductor'? Explain with examples. What is a wavefront? Explain the Huygens principle. Derive an expression for the electric potential energy of a system of two point charges. What is the Doppler effect? Explain its two types with the help of an example for each.
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