CBSE Class 12 Chemistry Chapter 7 Competency-Based Questions With Answers 2024-25: Assessment is important in education as it provides the knowledge that the students gain throughout the course. These questions are designed to evaluate how well the students can understand a particular subject or topic.
For the academic year 2024-25, CBSE has released competency-based questions with the answer key that can help the students to prepare well for the exam. Students who want to excel in their exams can take a look at these questions for better preparation.
In this article, we will be providing you with the competency-based questions for Class 12 Chemistry Chapter 7 Aldehydes, Ketones And Carboxylic Acids.
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CBSE Class 12 Chemistry Chapter 7 Competency-Based Questions With Answer Key 2024-25
| Q.No | Question | Marks | |||||||||||||||
| Multiple Choice Question | |||||||||||||||||
| Q.131 | Given below are four examples in which the reactants and the reactions they are subjected to are stated.  Identify the example(s) in which the major product obtained will be an aldehyde and in which example(s) it is a ketone.
A. A B. B C. C D. D | 1 | |||||||||||||||
| Q.132 | A carbonyl compound X does NOT give a reddish-brown precipitate on heating with Fehling's solution. Which of the following could compound X be? (i) Propanal (ii) Diethyl ketone (iii) 4-Nitrobenzaldehyde A. only (iii) and (iv) B. only (ii) C. either (i) or (iii) D. either (ii) or (iii) | 1 |
| Q.133 | A carbonyl compound produces iodoform on reaction with sodium hypoiodite. Which of the following could the carbonyl compound be? (i) CH3 - CH2- CHO (ii) CH3 - CH2 - CO - CH2 - CH3 (iii) CH3 - CHO (iv) CH3 - CH2 - CO - CH3 A. only (i) B. only (i) and (iii) C. only (ii) and (iv) D. only (iii) and (iv) | 1 |
| Q.134 | Which of the following compounds are produced in an aldol condensation reaction of acetaldehyde and propanone? | 1 |
|
A. only P B. only P and Q C. only P, Q and R D. all - P, Q, R and S | ||||||||||
| Q.135 | Electrophilic substitution in benzoic acid takes place at the meta position. Which of the following is the reason for the reaction above? A. The carboxyl group activates only the meta position. B. The carboxyl group deactivates only the ortho and para positions. C. The carboxyl group activates the meta position more than the ortho and para positions. D. The carboxyl group deactivates the meta position less than the ortho and para positions. | 1 | ||||||||
| Q.136 | A carbonyl compound X undergoes the reactions given in the table below.
Which of the following could compound X be? A. CH3 - CH2 - CHO B. CH3 - CO - CH3 C. CH3 - CHO | 1 |
CBSE Class 12 Chemistry Chapter 7 Competency-Based Questions Answer Key 2024-25
| Q.No | Answers | Marks |
| Q.131 | D. D | 1 |
| Q.132 | D. either (ii) or (iii) | 1 |
| Q.133 | D. only (iii) and (iv) | 1 |
| Q.134 | D. all - P, Q, R and S | 1 |
| Q.135 | D. The carboxyl group deactivates the meta position less than the ortho and para positions. | 1 |
| Q.136 | C. CH3 - CHO | 1 |
| Q.137 | D. all - P, Q and R | 1 |
| Q.138 | C. phthalic acid | 1 |
| Q.139 | 1 mark for each of the following steps: - Stir the mixture with an aqueous sodium bisulphite (sodium hydrogen sulphite) solution. - Filter off the insoluble alkane. - Add dilute mineral acid/alkali to the filtrate to obtain the aldehyde. | 2 |
To get the rest of the questions and answers, we provide a FREE PDF for the students to download from the link below.
CHECK: CBSE Class 12 Chapter-7 Competency-Based Questions With Answer Key 2024-25
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