CBSE Exam Results 2013

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CBSE Marking Scheme - Class XII Chemistry

by saumil shrivastava

CBSE Question Paper for Chemistry will be of 70 marks and students will have 3 hours to complete the paper. CBSE Board has prescribed certain guidelines according to CBSE marking scheme. The question paper will have no overall choice. However, there will be internal choices in the question paper. The students shall get due credit for precise answers as per CBSE Marking Scheme. The table below gives weightage of topics in CBSE Chemistry Question paper.

CBSE Marking Scheme in Detail for Chemistry

Unit Marks (No. of questions)
Solid State 4 (2)
Solutions 5 (1)
Electrochemistry 5 (2)
Chemical Kinetics 5 (3)
Surface Chemistry 4 (2)
General Principles and processes of isolation of elements 3 (1)
p-block elements 8 (4)
d& f block elements 5 (1)
Coordination Compounds 3 (2)
Haloalkanes and Haloarenes 4 (2)
Alcohols, Phenols and Ethers 4 (2)
Aldehydes,Ketones & Carboxylic acids 6 (2)
Organic Compounds containing Nitrogen 4 (2)
Biomolecules 4 (2)
Polymers 3 (1)
Chemistry in Everyday Life 3 (1)

Weightage to Questions

CBSE question paper for Chemistry shall consist of 8 very short answer questions. The very short answer questions will carry 1 mark each. The paper will have two types of short answer questions with 2 and 3 marks respectively. There will also be 3 long answer questions which will require students to write answers in detail. The 5 long answer questions will carry 5 marks each. CBSE Chemistry question paper will be of 70 marks in total. The students will be given internal choice on any one question of 3 marks, any one question of 2 marks and all three long answer questions. In all, there will be internal choices on five questions.

Sample Question with CBSE marking scheme for Chemistry

The marking scheme for answer to sample question in Chemistry paper is given below:
Question (3 marks)

1. Give Chemical Tests to distinguish between:
i) Isopropyl alcohol and n-propylalcohol
ii) Phenol and alcohol
iii) Methyl ethanoate and Ethyl ethanoate

Answer 1 :

i) On adding NaOH/I2 or NaOI and heating, Isopropyl alcohol forms yellow ppt of iodoform(CHI3) whereas n-propyl alcohol does not. (or any other suitable test)
ii) Phenol and alcohol On adding neutral FeCl3 solution, Phenol forms red-violet complex whereas alcohol does not. (or any other suitable test)
iii) methyl ethanoate and ethyl ethanoatelodoform test - On hydrolysis, ethylethanoate gives ethanol which on heating with NaOI gives yellow ppt of CHI3 whereas Methyl Ethanoate on hydrolysis gives Methanol which does not form Iodoform with NaOI 1*3=3

19 Comments
    ibti
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    ibtiSun, 09 Mar 2014 04:29:51 -0000

    chem is not somch hrd bas
    te thing u all need to do in these day
    is jst to STUDY samgha na
    there s no short cut fr studies

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    sakshichaudhary
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    sakshichaudharyWed, 11 Sep 2013 10:36:18 -0000

    Thanks for providing the giving sample papers. They helped me to prepare in a better way. If you are willing to get CBSE Sample papers than Visit CBSE Sample Papers for Class 12 Chemistry

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    kevin77
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    kevin77Fri, 08 Mar 2013 21:10:16 -0000

    the NCERT syllabus.. (CBSE)
    chemistry
    (not according to textbook order)

    chemistry in everyday life - 3marks
    polymers - 3m
    surface chemistry - 4m
    coordination compound - 4m
    biomolecules - 4m
    solid state - 4m
    solutions - 5m
    electrochemistry - 5m
    chemical kinematics - 4m
    p block - 8m
    d & f block - 5m
    haloalkanes and haloarenes - 4m
    alcohols, phenols anf ethers - 4m
    aldehyde, ketones and carboxylic acids - 6m
    amines - 4m
    mettalorgy(unit 6) - 3m

    i hope this help most of you..

    from the first four units.. mostly numericals..
    from organic chemistry.. conversions and tests, also complete the conversions and named reactions..

    the order of units written here is according to which i study..
    this order is great to study.. as the chaps are in order of getting marks to not getting marks..
    like in chemistry in everyday life u can score a 3 easily.. but in aldehydes.. its a bit difficult…

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    ANKU223473
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    ANKU223473Wed, 06 Mar 2013 14:45:22 -0000

    IMPORTANT TO ALL:-
    THOSE WHO REALLY WANT A CBSE CONDUCTED BLUE PRINT SOLVED WITH MARKING SCHEME AND SYLLABUS OF CHEMISTRY EXAM CAN MESSAGE ME ON MY FACEBOOK ID {ankusharya28@gmail.com}…….
    REALLY I'M NOT JOKING I'M ALSO A +2 STUDENT

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    kiratleen
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    kiratleenWed, 06 Mar 2013 09:02:40 -0000

    i want the blue print of chemistry +2
    please send the correct one
    physics exam was not according to that blue print which i was having

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    vikas-rana
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    vikas-ranaTue, 05 Mar 2013 17:34:53 -0000

    how can I obtained passing marks in chemistry?

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    saksham_95
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    saksham_95Wed, 06 Mar 2013 10:27:57 -0000

    Forget about it! You don't have time now.
    Haha :D Just kidding. E-mail me and I will tell you.

    tarunsolanki007
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    tarunsolanki007Thu, 07 Mar 2013 07:43:21 -0000

    please tell me :(((( tarunsolanki007@hotmail.com i want to pass with 40/70 i know some chapters but want some good guide help me please!!!
    email me i m waiting.

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    samuel0097
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    samuel0097Mon, 11 Feb 2013 12:04:30 -0000

    I want sample paper of chemistry class 12 immidiatly

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    ash_leen
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    ash_leenTue, 11 Sep 2012 11:17:36 -0000

    it didnt really help!!
    i really need some sample papers of chemistry…..which can really HELP! me………..

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    every green
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    every greenSun, 09 Sep 2012 06:19:05 -0000

    i want to get a simple paper for 10th class

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    Mahtabarbaaz
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    MahtabarbaazThu, 19 Jul 2012 12:20:58 -0000

    Chemistry class for 12

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    simmyyyy
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    simmyyyyWed, 15 Feb 2012 16:33:35 -0000

    more samples of question should be given……..

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    Vipin Chandra
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    Vipin ChandraTue, 14 Feb 2012 07:03:34 -0000

    please give me the marking scheme of chemistry & computer science. in giving the marking scheme,please give the idea to write the answers of different questions along with their alloted mark.
    PLEASE GIVE IMMEDIATELY

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    Adi-vyas
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    Adi-vyasSun, 29 Jan 2012 11:44:07 -0000

    just wanna know the topics of chemistry which can help in jst passing the exams could any one help me…..plz……….?

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    pride_of_king
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    pride_of_kingSat, 07 Jan 2012 13:00:53 -0000

    I want the sample papers of chemistry.

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    aashish0809
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    aashish0809Mon, 05 Dec 2011 16:03:42 -0000

    i want to know the imp topics of chemistry of class 12 acc 2 cbse

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    chem_cbse
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    chem_cbseMon, 05 Dec 2011 03:35:48 -0000

    i want to get sample papers in chemistry sub. class 12th. immediatly

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    itssuyog96
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    itssuyog96Sun, 09 Mar 2014 19:39:17 -0000

    go to mycbseguide.com ….why wasting time searching in such rubbish forums!

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    Emma Don
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    Emma DonMon, 29 Aug 2011 08:35:37 -0000

    So luvly, I lik dis.

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    MADHU_SWEETY
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    MADHU_SWEETYSat, 05 Mar 2011 14:11:27 -0000

    I WANT SAMPLE PAPER OF CHEMISTRY

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    riths
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    rithsWed, 29 Dec 2010 09:42:36 -0000

    very entertaining

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Last Updated At May 04, 2013


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