CBSE Board Paper 2024 (Marking Scheme and Solutions) | Chemistry Class 12 - NEET PDF Download

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Marking Scheme 
Strictly Confidential 
(For Internal and Restricted use only) 
Senior School Certificate Examination,2024 
SUBJECT NAME  CHEMISTRY (Theory)  
(Q.P.CODE 56_1_1,2,3) 
General Instructions: - 
 
You are aware that evaluation is the most important process in the actual and correct assessment 
of the candidates. A small mistake in evaluation may lead to serious problems which may affect 
the future of the candidates, education system and teaching profession. To avoid mistakes, it is 
requested that before starting evaluation, you must read and understand the spot evaluation 
guidelines carefully. 
“Evaluation policy is a confidential policy as it is related to the confidentiality of the 
examinations conducted, Evaluation done and several other aspects. Its’ leakage to public 
in any manner could lead to derailment of the examination system and affect the life and 
future of millions of candidates. Sharing this policy/document to anyone, publishing in any 
magazine and printing in News Paper/Website etc may invite action under various rules of 
the Board and IPC.” 
Evaluation is to be done as per instructions provided in the Marking Scheme. It should not be 
done according to one’s own interpretation or any other consideration. Marking Scheme should 
be strictly adhered to and religiously followed. However, while evaluating, answers which are 
based on latest information or knowledge and/or are innovative, they may be assessed for 
their correctness otherwise and due marks be awarded to them. In class-X, while 
evaluating two competency-based questions, please try to understand given answer and 
even if reply is not from marking scheme but correct competency is enumerated by the 
candidate, due marks should be awarded.  
The Marking scheme carries only suggested value points for the answers 
These are in the nature of Guidelines only and do not constitute the complete answer. The 
students can have their own expression and if the expression is correct, the due marks should be 
awarded accordingly. 
The Head-Examiner must go through the first five answer books evaluated by each evaluator on 
the first day, to ensure that evaluation has been carried out as per the instructions given in the 
Marking Scheme. If there is any variation, the same should be zero after delibration and 
discussion. The remaining answer books meant for evaluation shall be given only after ensuring 
that there is no significant variation in the marking of individual evaluators. 
Evaluators will mark( v ) wherever answer is correct. For wrong answer CROSS ‘X” be marked. 
Evaluators will not put right ( ? )while evaluating which gives an impression that answer is correct 
and no marks are awarded. This is most common mistake which evaluators are committing. 
If a question has parts, please award marks on the right-hand side for each part. Marks awarded 
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Marking Scheme 
Strictly Confidential 
(For Internal and Restricted use only) 
Senior School Certificate Examination,2024 
SUBJECT NAME  CHEMISTRY (Theory)  
(Q.P.CODE 56_1_1,2,3) 
General Instructions: - 
 
You are aware that evaluation is the most important process in the actual and correct assessment 
of the candidates. A small mistake in evaluation may lead to serious problems which may affect 
the future of the candidates, education system and teaching profession. To avoid mistakes, it is 
requested that before starting evaluation, you must read and understand the spot evaluation 
guidelines carefully. 
“Evaluation policy is a confidential policy as it is related to the confidentiality of the 
examinations conducted, Evaluation done and several other aspects. Its’ leakage to public 
in any manner could lead to derailment of the examination system and affect the life and 
future of millions of candidates. Sharing this policy/document to anyone, publishing in any 
magazine and printing in News Paper/Website etc may invite action under various rules of 
the Board and IPC.” 
Evaluation is to be done as per instructions provided in the Marking Scheme. It should not be 
done according to one’s own interpretation or any other consideration. Marking Scheme should 
be strictly adhered to and religiously followed. However, while evaluating, answers which are 
based on latest information or knowledge and/or are innovative, they may be assessed for 
their correctness otherwise and due marks be awarded to them. In class-X, while 
evaluating two competency-based questions, please try to understand given answer and 
even if reply is not from marking scheme but correct competency is enumerated by the 
candidate, due marks should be awarded.  
The Marking scheme carries only suggested value points for the answers 
These are in the nature of Guidelines only and do not constitute the complete answer. The 
students can have their own expression and if the expression is correct, the due marks should be 
awarded accordingly. 
The Head-Examiner must go through the first five answer books evaluated by each evaluator on 
the first day, to ensure that evaluation has been carried out as per the instructions given in the 
Marking Scheme. If there is any variation, the same should be zero after delibration and 
discussion. The remaining answer books meant for evaluation shall be given only after ensuring 
that there is no significant variation in the marking of individual evaluators. 
Evaluators will mark( v ) wherever answer is correct. For wrong answer CROSS ‘X” be marked. 
Evaluators will not put right ( ? )while evaluating which gives an impression that answer is correct 
and no marks are awarded. This is most common mistake which evaluators are committing. 
If a question has parts, please award marks on the right-hand side for each part. Marks awarded 
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for different parts of the question should then be totaled up and written in the left-hand margin and 
encircled. This may be followed strictly. 
If a question does not have any parts, marks must be awarded in the left-hand margin and 
encircled. This may also be followed strictly. 
If a student has attempted an extra question, answer of the question deserving more marks 
should be retained and the other answer scored out with a note “Extra Question”. 
No marks to be deducted for the cumulative effect of an error. It should be penalized only once. 
A full scale of marks __________(example 0 to 80/70/60/50/40/30 marks as given in Question 
Paper) has to be used. Please do not hesitate to award full marks if the answer deserves it. 
Every examiner has to necessarily do evaluation work for full working hours i.e., 8 hours every 
day and evaluate 20 answer books per day in main subjects and 25 answer books per day in 
other subjects (Details are given in Spot Guidelines).This is in view of the reduced syllabus and 
number of questions in question paper. 
Ensure that you do not make the following common types of errors committed by the Examiner in 
the past:- 
? Leaving answer or part thereof unassessed in an answer book. 
? Giving more marks for an answer than assigned to it. 
? Wrong totaling of marks awarded on an answer. 
? Wrong transfer of marks from the inside pages of the answer book to the title page. 
? Wrong question wise totaling on the title page. 
? Wrong totaling of marks of the two columns on the title page. 
? Wrong grand total. 
? Marks in words and figures not tallying/not same. 
? Wrong transfer of marks from the answer book to online award list. 
? Answers marked as correct, but marks not awarded. (Ensure that the right tick mark is 
correctly and clearly indicated. It should merely be a line. Same is with the X for incorrect 
answer.) 
? Half or a part of answer marked correct and the rest as wrong, but no marks awarded.  
While evaluating the answer books if the answer is found to be totally incorrect, it should be 
marked as cross (X) and awarded zero (0)Marks. 
Any unassessed portion, non-carrying over of marks to the title page, or totaling error detected by 
the candidate shall damage the prestige of all the personnel engaged in the evaluation work as 
also of the Board. Hence, in order to uphold the prestige of all concerned, it is again reiterated 
that the instructions be followed meticulously and judiciously. 
The Examiners should acquaint themselves with the guidelines given in the “Guidelines for Spot 
Evaluation” before starting the actual evaluation. 
Every Examiner shall also ensure that all the answers are evaluated, marks carried over to the 
title page, correctly totaled and written in figures and words. 
The candidates are entitled to obtain photocopy of the Answer Book on request on payment of 
the prescribed processing fee. All Examiners/Additional Head Examiners/Head Examiners are 
once again reminded that they must ensure that evaluation is carried out strictly as per value 
points for each answer as given in the Marking Scheme.