CBSE Class 12 Chemistry Exam 2025: Answer Key And Marks Breakdown Inside– Check How You Scored

The Central Board of Secondary Education (CBSE) held the Class 12 Chemistry exam on February 27. Students are now keen to assess their performance. To assist them, we provide answer keys for all question paper sets.

Class 12 Chemistry Exam 2025: Answer Key

Using the answer key offers several advantages. It allows students to self-assess their understanding of Chemistry concepts and evaluate their performance. Additionally, it provides clear solutions to challenging numerical and theoretical questions, helping clarify doubts. This tool also identifies areas needing more practice, aiding preparation for future board and competitive exams like NEET and JEE.

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Class 12 Chemistry Exam 2025: Pattern Overview

The CBSE Class 12 Chemistry exam consists of various sections with different question types. Section A includes 16 multiple-choice questions, each worth one mark. Section B has five short-answer questions, each carrying two marks. Section C contains seven short-answer questions worth three marks each. Section D features two case-based questions, each worth four marks, while Section E comprises three long-answer questions valued at five marks each.

Class 12 Chemistry Exam 2025: Details

The CBSE Class 12 Chemistry exam was conducted offline from 10:30 AM to 1:30 PM, lasting three hours. The total score for the exam is 70 marks. Multiple sets of question papers were used to maintain fairness and integrity during the examination process.

Class 12 Chemistry Exam 2025: Answer Key Highlights

The CBSE Class 12 Chemistry exam typically includes around 30-35 questions based on the latest pattern. The answer key provided here is shared by Jagran New Media report, curated by subject matter experts to ensure accuracy and reliability for students seeking to verify their answers.

Below are some sample questions from Section A:

The charge required for reducing one mole of MnO4- to MnO2 is (B) 3 F.
A false statement among the options is that the molecularity of a reaction may be zero (C).
Molecularity measures the number of molecules reacting in an elementary reaction (C).
The element with [Ar]3d104s2 configuration is Zn (B).
[Co(NH3)5(NO2)]2+ and [Co(NH3)5(ONO)]2+ are linkage isomers (B).
The diamagnetic species is [Ni(CN)4]2- (A).
The correct IUPAC name for a given compound is 1-Chloro-4-Methylbenzene (C).
Oxidation of secondary alcohol with CrO3 forms a ketone (B).
Phenol converts to salicylic acid via the Kolbe reaction (C).
Denaturation examples include coagulation of egg white and curdling of milk (D).
Nucleotides join through phosphodiester linkage (D).
Scurvy results from ascorbic acid deficiency (C).

This comprehensive answer key aids students in verifying their responses accurately. By using this resource, they can better understand their strengths and weaknesses in Chemistry, ultimately enhancing their preparation strategies for future examinations.