CBSE PORTAL : CBSE Class-12 Exam 2018 : Marking Scheme, Chemistry |  |
| CBSE Class-12 Exam 2018 : Marking Scheme, Chemistry Posted: 29 Jun 2018 03:37 AM PDT CBSE Class-12 Exam 2018 : Marking SchemeQuestion Paper, ChemistrySenior School Certificate Examination 2018 Marking Scheme ------- Chemistry 56/1 56/2 56/3 56/B General Instructions1. The Marking Scheme provides general guidelines to reduce subjectivity in the marking. The answers given in the Marking Scheme are Suggested answers. The content is thus indicative. If a student has given any other answer which is different from the one given in the Marking Scheme, but conveys the same meaning, such answers should be given full weight-age. 2. The Marking Scheme carries only suggested value point for the answers. These are only guidelines and do not constitute the complete answers. The students can have their own expression and if the expression is correct the marks will be awarded accordingly. 3. The Head-Examiners have to go through the first five answer-scripts evaluated by each evaluator to ensure that the evaluation has been carried out as per the instruction given in the marking scheme. The remaining answer scripts meant for evaluation shall be given only after ensuring that there is no significant variation in the marking of individual evaluators. 4. 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. 5. If a question has parts, please award marks in the right hand side for each part. Marks awarded for different parts of the question should then be totaled up and written in the left hand margin and circled. 6. If a question does not have any parts, marks be awarded in the left-hand margin. 7. If a candidate has attempted an extra question, marks obtained in the question attempted first should be retained and the other answer should be scored out. 8. No Marks to be deducted for the cumulative effect of an error. It should be penalized only once. 9. A full scale of marks 0-70 has to be used. Please do not hesitate to award full marks if the answer deserves it. 10. Separate marking schemes for all the three sets have been provided. 11. As per orders of the Hon'ble Supreme Court. The candidate would now be permitted to obtain photocopy of the Answer Book on request on payment of the prescribed fee. All examiner/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. 12. The Examiners should acquaint themselves with the guidelines given in the Guidelines for sport Evaluation before starting the actual evaluation. 13. Every Examiner should stay upto sufficiently reasonable time normally 5-6 hours every day and evaluate 20-25 answer books and should minimum 15-20 minutes to evaluate each answer book. 14. Every Examiner should acquaint himself/herself with the marking schemes of all the sets. CBSE Class-12 Exam 2018 : Chemistry (Set-1)Click Here to DownloadCBSE Class-12 Exam 2018 : Chemistry (Set-2)Click Here to DownloadCBSE Class-12 Exam 2018 : Chemistry (Set-3)Click Here to DownloadCBSE Class-12 Exam 2018 : Chemistry (Blind)Click Here to DownloadCourtesy: CBSE |
| CBSE Class-12 Exam 2018 : Marking Scheme, Physics Posted: 29 Jun 2018 03:14 AM PDT CBSE Class-12 Exam 2018 : Marking SchemeQuestion Paper, PhysicsStrictly Confidential (For Internal and Restricted Use only) Senior School Certificate Examination Marking Scheme - Physics (Code 55/1, Code 55/2, Code 55/3) March, 2018 General Instructions : 1. The marking scheme provides general guidelines to reduce subjectivity in the marking. The answers given in the marking scheme are suggested answers. The content is thus indicated. If a student has given any other answer, which is different from the one given in the marking scheme, but conveys the meaning correctly, such answers should be given full weightage. 2. In value based questions, any other individual response with suitable justification should also be accepted even if there is no reference to the text. 3. 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 adhered to and religiously followed. 4. If a question has parts, please award in the right hand side for each part. Marks awarded for different part of the question should then be totaled up and written in the left hand margin and circled. 5. If a question does not have any parts, marks are to be awarded in the left hand margin only. 6. If a candidate has attempted an extra question, marks obtained in the question attempted first should be retained and the other answer should be scored out. 7. No marks are to be deducted for the cumulative effect of an error. The student should be penalized only once. 8. Deduct ½ mark for writing wrong units, missing units, in the final answer to numerical problems. 9. Formula can be taken as implied from the calculations even if not explicitly written. 10. In short answer type question, asking for two features / characteristics / properties if a candidate writes three features, characteristics / properties or more, only the correct two should be evaluated. 11. Full marks should be awarded to a candidate if his / her answer in a numerical problem is close to the value given in the scheme. 12. In compliance to the judgement of the Hon'ble Supreme Court of India, Board has decided to provide photocopy of the answer book(s) to the candidates who will apply for it along with the requisite fee. Therefore, it is all the more important that the evaluation is done strictly as per the value points given in the marking scheme so that the Board could be in a position to defend the evaluation at any forum. 13. The Examiner shall also have to certify in the answer book that they have evaluated the answer book strictly in accordance with the value points given in the marking scheme and correct set of question paper. 14. Every Examiner shall also ensure that all the answers are evaluated, marks carried over to the title paper, correctly totaled and written in figures and words. 15. In the past it has been observed that the following are the common types of errors committed by the Examiners
16. 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. 17. The Marking Scheme carries only suggested value points for the answers. These are only Guidelines and do not constitute the complete answer. The students can have their own expression and if the expression is correct, the marks will be awarded accordingly. 18. As per orders of the Hon'ble Supreme Court, the candidates would be now permitted to obtain photocopy of the Answer Book on request on payment of the prescribed fee. All examiners/ Head Examiners are once gain reminded that they must ensure that evaluation is carried out strictly as per value points for each answer as given in the Marking Scheme. 19. All the Head Examiners/Examiners are instructed that while Evaluating the answer scripts, if the answer is found to be totally incorrect, the (x) should be marked on the incorrect answer and awarded '0' marks. CBSE Class-12 Exam 2018 : Physics (Set-1)Click Here to DownloadCBSE Class-12 Exam 2018 : Physics (Set-2)Click Here to DownloadCBSE Class-12 Exam 2018 : Physics (Set-3)Click Here to DownloadStrictly Confidential (For Internal and Restricted Use only) Senior School Certificate Examination Marking Scheme - Physics (Code 55(B)) March, 2018 General Instructions : 1. The marking scheme provides general guidelines to reduce subjectivity in the marking. The answers given in the marking scheme are suggested answers. The content is thus indicated. If a student has given any other answer, which is different from the one given in the marking scheme, but conveys the meaning correctly, such answers should be given full weightage. 2. In value based questions, any other individual response with suitable justification should also be accepted even if there is no reference to the text. 3. 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 adhered to and religiously followed. 4. If a question has parts, please award in the right hand side for each part. Marks awarded for different part of the question should then be totaled up and written in the left hand margin and circled. 5. If a question does not have any parts, marks are to be awarded in the left hand margin only. 6. If a candidate has attempted an extra question, marks obtained in the question attempted first should be retained and the other answer should be scored out. 7. No marks are to be deducted for the cumulative effect of an error. The student should be penalized only once. 8. Deduct ½ mark for writing wrong units, missing units, in the final answer to numerical problems. 9. Formula can be taken as implied from the calculations even if not explicitly written. 10. In short answer type question, asking for two features / characteristics / properties if a candidate writes three features, characteristics / properties or more, only the correct two should be evaluated. 11. Full marks should be awarded to a candidate if his / her answer in a numerical problem is close to the value given in the scheme. 12. In compliance to the judgement of the Hon'ble Supreme Court of India, Board has decided to provide photocopy of the answer book(s) to the candidates who will apply for it along with the requisite fee. Therefore, it is all the more important that the evaluation is done strictly as per the value points given in the marking scheme so that the Board could be in a position to defend the evaluation at any forum. 13. The Examiner shall also have to certify in the answer book that they have evaluated the answer book strictly in accordance with the value points given in the marking scheme and correct set of question paper. 14. Every Examiner shall also ensure that all the answers are evaluated, marks carried over to the title paper, correctly totaled and written in figures and words. 15. In the past it has been observed that the following are the common types of errors committed by the Examiners
16. 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. 17. The Marking Scheme carries only suggested value points for the answers. These are only Guidelines and do not constitute the complete answer. The students can have their own expression and if the expression is correct, the marks will be awarded accordingly. 18. As per orders of the Hon'ble Supreme Court, the candidates would be now permitted to obtain photocopy of the Answer Book on request on payment of the prescribed fee. All examiners/ Head Examiners are once gain reminded that they must ensure that evaluation is carried out strictly as per value points for each answer as given in the Marking Scheme. 19. All the Head Examiners/Examiners are instructed that while Evaluating the answer scripts, if the answer is found to be totally incorrect, the (x) should be marked on the incorrect answer and awarded '0' marks. CBSE Class-12 Exam 2018 : Physics (Blind)Click Here to DownloadCourtesy: CBSE |
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