CBSE Class 12 Exam Analysis 2023:  Chemistry Analysis, Review & Question Paper with Answer Key

CBSE Class 12 Chemistry board exam 2023 was conducted on, February 28, 2023. Candidates wrote their English papers from 10.30 AM to 1.30 PM.  

In this article, you will find the CBSE Class 12 Chemistry, detailed paper analysis along with the complete question paper and official answer key. Students came out from the examination centers with the satisfaction of having completed the paper on time.

Check out student feedback and exam paper analysis by experts below. Also, the students of class 12th new session can find the paper in PDF version in the link shared below in the article.

CBSE Class 12th Chemistry Question Paper With Answer Key - Code - 56 - 2 - 2

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CBSE Exam Analysis Chemistry Paper

The CBSE chemistry exam analysis as per students who appeared for the exam was moderate and easy.

CBSE 12th Chemistry Exam 2023: 'Moderately difficult'

According to the preliminary reports, the CBSE Class 12th paper was slightly difficult. It was a lengthy paper

CBSE Exam: Paper was easy to moderate

Accrording to the students, who took the exam today, the paper was easy to moderate. The section B of the paper was very easy while the MCQ part of the paper was slightly tricky.

CBSE Class 12 Chemistry analysis: 'Direct MCQs'

The chemistry paper was a balanced one with moderate difficulty level. The MCQs were quite direct. The level of questions were similar to the previous years and the pattern was in accordance with the CBSE sample paper. Most questions were based on NCERT and students who have revised the NCERT pattern thoroughly would solve the paper well.

CBSE Class 12 Chemistry paper 'Quite Average"

As per the observation of the candidates, the question paper was quite average for almost all the students. Question are  straightforward. MCQ's in the sets were different but the theoretical questions were mostly same. The passage based questions were easy to guess. Students managed their time better as the paper was not lengthy. Overall it was a good paper with balanced elements from all the sections.

Type Of Questions Asked In Today’s CBSE Chemistry Exam

The CBSE class 12 chemistry exam was divided into 5 sections with a maximum of 70 marks. The candidates were required to complete the exam within 3 hours. Candidates were also given 15 minutes to read the question paper.

• Section A - 18 multiple choice questions of 1 mark each.
• Section B -  7 very short answer questions carrying 2 marks each.
• Section C -  5 short answer questions carrying 3 marks each.
• Section D - 2 case-based questions carrying 4 marks each.
• Section E -  3 long answer questions carrying 5 marks each.

CBSE Class 12th Chemistry Exam: Teacher's Reaction

The Chemistry paper was moderately difficult and was balanced and NCERT-based. Almost all the sections were easy and as per the syllabus. The students were also satisfied and a few of them found it an average paper and they are very sure of getting good marks, says Anupama Sharma, PGT Chemistry at Dolphins High School, Jaipur.

CBSE Class 12 Chemistry Paper Answer Key 2023

CBSE hasn’t released the 2023 class 12 Chemistry question paper or answer key yet. However, you can check out the genuine question paper and CBSE Class 12 Chemistry answer key 2023 here. The official consensus of the paper was moderately difficult.

CBSE Class 12 Chemistry 2023 Answer Key

Section- A

1. Which one of the following has lowest pKa value?

(a) CH3-COOH

(b) O2N-CH2-COOH

(c) Cl-CH2-COOH

(d) HCOOH

Answer: (b) O2N-CH2-COOH

2. Which of the following cell was used in Apollo space programme?

(a) Mercury Cell

(b) Daniel Cell

(c) H2-O2 Fuel cell

(d) Dry Cell

Answer: (c) H2-O2 Fuel cell

3. Consider the following standard electrode potential values:

Fe3+ (aq) + e- —> Fe2+ (aq) Eo = + 0.77 V

MnO4- (aq) + 8H+ + 5e- —-> Mn2+ (aq) + 4H2O (l) Eo = + 1.51V

What is the cell potential for the redox reaction?

(a) -2.28 V

(b) - 0.74 V

(c) + 0.74 V

(d) + 2.28 V

Answer: (c)  +0.74 V

4. The following experimental rate data were obtained for a reaction carried out at 25o C:

A(g) + B(g) —-> C(g) + D(g)

Initial [ A(g) ] / mol / dm-3	Initial [B(g)]  / mol / dm-3	Initial rate  / mol / dm-3
3.0 x 10-2	2.0 x 10-2	1.89 x 10-4
3.0 x 10-2	4.0 x 10-2	1.89 x 10-4
3.0 x 10-2	4.0 x 10-2	7.56 x 10-4

What are the orders with respect to A(g) and B(g)?

	Order with respect to A(g)	Order with respect to B(g)
(a)	Zero	Second
(b)	First	Zero
(c)	Second	Zero
(d)	Second	First

Answer: To be updated

5. The magnetic moment of [NiCl4]2-

(a) 1.82 BM

(b) 2.82 BM

(c) 4.42 BM

(d) 5.46 BM

(Atomic no : Ni= 28)

Answer: (a) 1.82 BM

6. Which of the following ions has the electronic configuration 3d6 ?

(a) Ni³⁺

(b) Co³⁺

(c) Mn²⁺

(d) Mn³⁺

Answer: (b) CO³⁺

7. Which of the following aqueous solution will have highest boiling point?

(a) 1.0 M KCl

(b) 1.0 M K₂SO4

(c) 2.0 M KCl

(d) 2.0 M K2SO4

Answer: to be updated

8. A voltaic cell is made by connecting two half cells represented by half equations below:

Sn2+(aq) + 2e- -->Sn(s)Eo=-0.14 V

Fe3+(aq)+e- --> Fe2+ (aq)Eo=+0.77 V

Which statement is correct about this voltaic cell?

(a) Fe2+ is oxidised and the voltage of the cell is -0.91 V.

(b) Sn is oxidised and the voltage of the cell is 0.91 V.

(c) Fe2+ is oxidised and the voltage of the cell is 0.91 V.

(d) Sn is oxidised and the voltage of the cell is 0.63 V.

Answer: to be updated

9. Amides can be converted into amines by the reaction named

(a) Hoffmann degradation

(b) Ammonolysis

(c) Carbylamine

(d) Diazotisation

Answer: (a) Ammonolysis

10. Which of the following statements is not true about glucose?

(a) It is an aldohexose.

(b) On heating with HI it forms n-hexane.

(c) It is present in pyranose form.

(d) It gives 2,4 DNP test.

Answer: (d) It gives 2,4 DNP test.

11. Which of the following alcohols will not undergo oxidation?

(a) Butanol

(b) Butan-2-ol

(c) 2-Methylbutan-2-ol

(d) 3-Methylbutan-2-ol

Answer: (d) 3-Methylbutan-2-ol

12. Four half reactions I to IV are shown below:

1.  2Cl- —> Cl2 + 2e-
2. 4OH- —-> O2 + 2H2O + 2e-
3. Na+ + e- —-> Na
4. 2H+ + 2e- —-> H2

 Which two of these reactions are most likely to occur when concentrated brine is electrolysed?

(a) I and III

(b) I and IV

(c) II and III

(d) II and IV

13. Which property of transition metals enables them to behave as catalysts?

(a) High melting point

(b) High ionisation enthalpy

(c) Alloy Formation

(d) Variable oxidation states

Answer: (d) Variable oxidation states

14. Which of the following would not be a good choice for reducing nitrobenzene to aniline?

(a) LiAlH4

(b) H2/Ni

(c) Fe and HCl

(d) Sn and HCl

Answer: (a) LiAlH₄

For the questions 15 to 18 , two statements are given - one labeled as Assertion (A) and the other labelled as Reason (R ). Select the correct answer to these questions from the codes (a), (b), (c ), and (d) as given below:

(a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).

(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).

(c) Assertion (A) is true but Reason (R) is false.

(d) Assertion (A) is false, but Reason (R) is true.

Answer: (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).

15. Assertion (A) : Vitamin C cannot be stored in our body.

Reason (R) : Vitamin C is fat soluble and is excreted from the body in urine.

Answer: (c) Assertion (A) is true but Reason (R) is false

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