CBSE 12 Chemistry Answer Key 2026: The Central Board of Secondary Education (CBSE) has concluded the class 12th Chemistry Exam 2026 today, February 28, 2026. As per the schedule, the CBSE Class 12th Chemistry examination is scheduled from 10:30 AM to 1:30 PM at various centres across the nation.
Students who appeared for the chemistry exam today can use the CBSE 12 Chemistry Answer Key 2026, prepared by our experts, to calculate estimated scores. Also, the detailed CBSE 12th Chemistry Question Paper Analysis can help students evaluate their overall performance.
The CBSE Class 12th Board Chemistry paper is among the major exams. Today, over a duration of 3 hours, the theory exam will be conducted for 70 marks. To pass, students must secure at least 33% marks in both theory and practical exams separately.
CBSE 12 Chemistry Answer Key 2026 Unofficial(OUT)
The CBSE Class 12th Chemistry question paper is divided into five distinct sections from A to E, containing a total of 33 questions. According to the revised pattern, this year's paper places a heavy emphasis on competency-basedQuestions, which now make up 50% of the paper. These include case-based and assertion-reason questions. Students can proceed to check the CBSE 12 Chemistry Unofficial Answer Key 2026 to calculate their scores.
| Questions | Answers |
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SECTION - 1 MULTIPLE CHOICE QUESTIONS |
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| 1. Which of the following curves represents the first-order reaction? | (C) 0.01 MaCacl2 |
| 2. Identify the correct statements: | B) For complex recations molecularity has no meaning |
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3. The order for the given reaction is: A+2B-Products Rate=k(A)1/2 (B)1 |
A) 1.5 |
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4. Electronic configuration of chromium is: |
A) [Ar] 3d5 4s1 |
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5. The correct IUPAC name of the complex [Pt(NH3)2Cl2)is: |
B) Diammine dichloroplatinum(II) |
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6. Which of the following is a heteroleptic complex |
D) [Co(NH₃)₄Cl₂]⁺ |
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7. Which of the following molecules is chiral in nature? |
D) 2-bromobutane |
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8. Identify the compound produced by the reduction of Ethanenitrile with Lithium aluminum hydride: |
A) Ethylamine |
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9. Which of the reactions is used in the conversion of a ketone into a hydrocarbon? |
B) Wolff–Kishner Reduction |
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10. The major product of the carbylamine reaction is: |
D) Isocyanide |
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11. Actinoids show a larger number of oxidation states: |
D) due to comparable energies of 5f, 6d and 7s orbitals |
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12. The correct formula of Hinsberg's reagent is: |
B) C₆H₅SO₂Cl |
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13. Which of the following ligands forms a chelate complex? |
D) Oxalate ion |
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14. Primary, secondary, and tertiary alcohols can be distinguished by: |
A) Lucas test |
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15. Identify the polysaccharide among the following |
D) Cellulose |
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16. The polypeptide chain in a protein has amino acids linked with each other in a specific sequence. This specific sequence of amino acids is called: |
A) Primary structure of protein |
CBSE 12 Chemistry Exam Analysis 2026
To evaluate their overall performance, it is crucial to understand the difficulty level of the set CBSE 12 Chemistry Question Paper. Students can go through the overall and section-wise analysis of the chemistry paper based on students’ feedback and the subject expert’s analysis.
| Particulars | CBSE 12 Chemistry Question Paper Analysis 2026 |
| Overall Difficulty Level of the paper | Moderate |
| Section A: Difficulty level | Easy |
| Section B: Difficulty level | Easy to Moderate |
| Section C Difficulty level | Moderate |
| Section D: Difficulty level | Moderate |
Students must note that the CBSE 12 Chemistry Answer Key 2026 is unofficial and can be used for reference purposes only. This will only give students an idea of their performance. For exact scores, students are advised to wait for the final result.
Students who are yet to analyse their performance of Physics exam can go through the CBSE 12th Physics Answer Key 2026 to evaluate their probable scores.
Live Updates
Early reports from teachers suggest the paper was technically sound and strictly followed the NCERT. No major errors have been reported in the sets distributed today. However, in case of any error students will be awarded marks for it.
- According to Priya from Mumbai, "Organic Chemistry was the star today. But the case-study was a bit unexpected. Though the paper felt a little on the lengthier side, I managed to complete and revise the paper.”
- Sneha from Bangalore said, "The paper wasn't 'tough' in a way that I didn't know the answers, but it was definitely long. I was panicking in the last two minutes"
Most students are pointing toward Section D - Case-Study Based and Section A - Assertion-Reasoning. Many reported that the options in the MCQs were very close, requiring deep conceptual clarity
According to student’s feedback, the overall difficulty level is being rated as "Moderate but Lengthy." While the questions stayed within the NCERT syllabus, the 50% competency-based weightage meant students had to spend more time than they expected.
According to student’s feedback, the overall difficulty level is being rated as "Moderate but Lengthy." While the questions stayed within the NCERT syllabus, the 50% competency-based weightage meant students had to spend more time than they expected.
Students can be seen exiting the examination centres. Detailed exam analysis and paper review will be updated soon. Stay tuned for the students' initial reactions.
The CBSE 12 Chemistry Exam 2026 ends at the scheduled time of 1:30 pm across all centres. Students will exit the examination centres after handling over their answer booklets to the invigilators.
Students have only 15 minutes to complete their paper. A 15 minute warning bell has been rung across the centres. Invigilators are asking students to cross-check the details mentioned on their answer sheet one more time before proceeding to complete the remaining answers. The exam will conclude at 1:30 PM
No, students are not allowed to leave the examination hall early in any case. As per CBSE 2026 guidelines, students are permitted to leave the examination hall at 1:30 PM only, even if they finish their paper early.
The chemistry paper consists of 33 questions divided into five sections - A,B,C,D, and E. The major highlight of the 2026 paper is that 50% of the questions are competency-based, including case-study and assertion-reason types. The theory paper carries 70 marks in total.
The CBSE 12th Board Chemistry exam 2026 commenced promptly at 10:30 AM across 7,574 centres. Students were given a mandatory 15-minute reading time from 10:15 AM to 10:30 AM to analyze the question paper before writing answers. Students are currently in the middle of their 3-hour session. Which will conclude at 1:30 PM.
The paper is not usually very lengthy; however, sufficient time is always required by the students to critically answer the equations. Due to the revised pattern, students find the 2026 pattern lengthy due to competency-based questions in the form of MCQs, case-studies, and assertion-reason.
According to subject experts, students should aim for:
- 30 mins for Section A
- 30 mins for Section B
- 45 mins for Section C
- 30 mins for Section D
- 45 mins for Section E,
- leaving 15 mins for review.
The CBSE Class 12th Chemistry Exam 2026 started after the authorities rang the bell at 10:30 AM. As per the rules, students were given 15 minutes (10:15 to 10:30) to read the question papers. After the long bell at 10:30 AM students have started writing their answers.
Students must always ensure that the chemical equation is balanced. It is of utmost importance to include required state symbols (s,l,g,aq) and mention catalysts or temperature conditions above the arrow. Also, missing a unit can result in a half-mark deduction.
- Aldol Condensation
- Cannizzaro Reaction
- Reimer-Tiemann
- Hoffmann Bromamide degradation
The following branch of the 12th-class chemistry subject carries the highest weightage, and students must pay more attention to these to score well:
- Organic Chemistry - 33 marks
- Physical Chemistry - 23 marks
- Inorganic Chemistry - 14 marks