Chemistry 2012 MCQ (Updated)

These answers may have mistakes and could be contradict with scheme answers. We don’t take any responsible for the mistakes and we don’t have any direct contact with answer provider rather we can’t assure the provider.

It is wired..! I heard that Chemistry MCQ paper was very difficult comparing to other subjects. So we decided to create a poll. Just correct your answers and please put your votes and let others as well as you, get to know the statistics of the paper. I.e weather the paper is difficult for all or difficult only for you..!

2012 chemistry(New Syllabus) probable answers.

Special thanks to our guest: chamath

  1. 2
  2. 2
  3. 4
  4. 3
  5. 3
  6. 5
  7. 1
  8. 5
  9. 5
  10. 1
  11. 2
  12. 4
  13. 4
  14. 3
  15. 3
  16. 2
  17. 2
  18. 4
  19. 3
  20. 4
  21. 5
  22. 2
  23. 3
  24. 4
  25. 3
  26. 4
  27. all
  28. 4
  29. 3
  30. 4
  31. 5
  32. 2
  33. 5
  34. 1
  35. 5
  36. 4
  37. 3
  38. 1
  39. 4
  40. 4
  41. 3
  42. 3
  43. 3
  44. 1
  45. 5
  46. 4
  47. 2
  48. 4
  49. 5
  50. 1

Answers for guests questions:

Melting points

Cs- 301.55K or 28.55’C
Fr- 300K or 27’C
Ga- 302K or 29’C
So above are solid in 25’C.

(Br- 265.90K or -8’C
Hg- 234K or -39’C)

Reviews by our guests:

“ashen dissanayakaAug 15, 5:44 pm

sir,
50-hydrogenchloroflourocarbon also engage in ozone layer depletion.Chlorine engae in a free radical reaction to deplete the layer.WHY ANSWER 5 is wrong then?

48-sulphur is produced through this reaction in industrial levels; 2H2S + SO2———> 3S +2 H2O.so the answer should be 2????

40-number of N2 mol = (approximately)1.4mols…therefore,the mass of L3N obtained is 1.4 X 2 X 35 =98??…so only the (a) is correct ???

39-in haber process 250atm pressure and 450-550 degrees celcius is bein used…WHY did u took the answer (b) as WRONG..??….ALL (a),(b),(d) should be correct????

35-answer(d) ..why is it wrong??…when we plot the graphs n take into a one graph,total pressure changes linearly ??cant we take asnwer as 4??

13-the bond -d ,its a sigma(SP-SP2) bond…so the length sholud be less than a sigma(SP2-SP2) bond ??

sir,those are few doubts i have.I dont mean that im correct.I just have few doubts regardin those questions.if i wasted your valuble time,i appologize..

thank you.
dissanayaka”

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About afdhaal

I'm afdhaal. Student of D.S Senanayake college, Colombo. And as well as Nooraniya M.M.V, Zahira College, MW. I belive that "People with passion, can change the world for better",Steve Jobs. Im passionate with what I'm doing. Im an optimist. I always think positively. I don't have a single place in my heart to NEGATIVE THOUGHTS. This is just the beggining. Just it's FIRST STEP OF MY JOURNEY.

69 responses to “Chemistry 2012 MCQ (Updated)”

  1. pro.jayathilaka says :

    Chemistry (new) 2012 MCQ Answers
    (1)-2 (2)-2 (3)-3 (4)-1
    (5)-3
    (6)-5 (7)-2 (8)-4 (9)-4
    (10)-3
    (11)-1 (12)-4 (13)-5 (14)-1
    (15)-4 (16)-3 (17)-2 (18)-3 (19)-3
    (20)-4
    (21)-1 (22)-1 (23)-4 (24)-5
    (25)-4 (26)-3 (27)-2 (28)-1 (29)-3
    (30)-3
    (31)-1 (32)-5 (33)-3 (34)-3
    (35)-4 (36)-2 (37)-4 (38)-5 (39)-5
    (40)-1
    (41)-2 (42)-5 (43)-4 (44)-1
    (45)-3/5 (46)-1 (47)-4 (48)-1 (49)-2
    (50)-2
    (*- These answers could be changed.) — with මික්

  2. djchemistry says :

    ikkkmanatowwwww hadissi

  3. SANJULA says :

    PLEASE UPLOAD 2012 AL CHEMISTRY (NEW) MCQ ANSWERS…

  4. viny says :

    Can you please upload the answers as soon as possible!!!

  5. chamath says :

    2012 che. (New) answers.
    22433515512443322434523434all43452515431443331542451
    Wenas wenna puluwan

    • ashen dissanayaka says :

      sir,
      50-hydrogenchloroflourocarbon also engage in ozone layer depletion.Chlorine engae in a free radical reaction to deplete the layer.WHY ANSWER 5 is wrong then?

      48-sulphur is produced through this reaction in industrial levels; 2H2S + SO2———> 3S +2 H2O.so the answer should be 2????

      40-number of N2 mol = (approximately)1.4mols…therefore,the mass of L3N obtained is 1.4 X 2 X 35 =98??…so only the (a) is correct ???

      39-in haber process 250atm pressure and 450-550 degrees celcius is bein used…WHY did u took the answer (b) as WRONG..??….ALL (a),(b),(d) should be correct????

      35-answer(d) ..why is it wrong??…when we plot the graphs n take into a one graph,total pressure changes linearly ??cant we take asnwer as 4??

      13-the bond -d ,its a sigma(SP-SP2) bond…so the length sholud be less than a sigma(SP2-SP2) bond ??

      sir,those are few doubts i have.I dont mean that im correct.I just have few doubts regardin those questions.if i wasted your valuble time,i appologize..

      thank you.
      dissanayaka

      • sur says :

        ya ur ryt …i have da same doubts ……can some one please clear dis !!!!!!!

      • afdhaal says :

        I also think it should be so. And also I think that these answers should have several mistakes. Right?
        So just keep away those mistakes for now take an assumption that “there will be more than 5 mistakes in that particular answer. So I better study to part 2 rather than do research in the mistakes”

      • Asanka says :

        13-the bond -d ,its a sigma(SP-SP2) bond…so the length sholud be less than a sigma(SP2-SP2) bond ??

        correct machan

  6. teady says :

    Hey please upload old syllabus answers…..

  7. jaliya says :

    i have doubt on 31 32 34 39 40

  8. gihan says :

    old syllabus answer nadda?????????

  9. tennekoon dkb says :

    in 42 all the N-O bonds should be in equal distance bcz of the resonance structure. Isn’t it so?

    • afdhaal says :

      I also thought so. But I can’t make decisions because the chemistry subject always get jumbled. It will say here something and it will say elsewhere another..

  10. Koli says :

    3;why answer 1 is wrong. I thnk 1 is the answer for it.. 6;I have a doubt abt this answer.. Why answer 3 is wrong ? 50;I agree with ashen in this Q. Why answer 5 is wrong ?

  11. Koli says :

    I have doubts on 3,6,42,47,50 ? Plz check ths ques…

  12. Shaf says :

    Dear sir,
    Br,Cs,Hg be in liqued format at the room temperature.
    So the 1st answer???

    • afdhaal says :

      Melting points
      Cs- 301.55K or 28.55’C
      Fr- 300K or 27’C
      Ga- 302K or 29’C
      So above are solid in 25’C.

      (Br- 265.90K or -8’C
      Hg- 234K or -39’C)

  13. KALPANI says :

    40(c)should be correct because of the lack of necessary temparature3??????

  14. pro.gayan says :

    why 37!
    An.. Is 4 it can be 5

  15. Lahiru says :

    Old ans. nathdoo?

  16. sasitha says :

    Chem. old syllabus eke answer’s tka danne nadda.

  17. hashini says :

    plz upld d chem old sylbs ans

  18. teady says :

    Old syllabus answer??????

  19. Madu says :

    3 weni prasne namakaranayedi pramukathawaya -OH wlata neda denna oni ? Uththare 1 nemeida sir ?

    • afdhaal says :

      Yap… I also thought so.
      Because I remember that when we name such a organic as it in the question, the additional number should be minimum.
      (i.e in Answer1- 1+2+4+3=10
      Answer4- 5+4+1+3=13 )

      Hmmm…. I’m afraid to make decisions.
      😦

  20. Kay says :

    Old syllabus answers nane

  21. Madu says :

    I have a doubt about Q.50. Sir can u explain why they choose 1 as the answer ?

  22. Nuski says :

    Alright dude, this is what I got…. Khair! :O

    and good work Masha Allah! 😀 😀

    Answers may change in the
    original scheme.

    52133
    51554
    22433
    20434
    52343
    43434
    52214
    43254
    34315
    42011

    PS: 0 representates unsured answers.

  23. Geeth says :

    Q3 : when numbering the longest carbon chain you have to give the lowest number to suffix functional group , so Answer 1 in incorrect because in this carbon chain suffix functional group is carbonyl so giving number 1 to hydroxyl group is wrong.

  24. harini says :

    sir i want old slbs answers.plz upld soon.thank u sir

  25. jaliya says :

    14 28 25 34 39 40 48 answers walata discussion ekak dannako

  26. jaliya says :

    are this new syllabus answers 100% correct

  27. kasun says :

    CHEMISTRY OLD SYLLABUS MCQ ANSWERS,,,,,,,
    FOR MY OLD FRIENDS…!!!

    23134 51212
    43132 12415 123(4/1)4 34345 1115all 31221
    52445 15555
    42435 35231
    waradi 2,3k thiyei ganan ganna epa..

  28. rushika says :

    sir what will be the minimum mcq ammount that will required for an A grade from new syllabus chemistry 2012 paper pls be knd and snd a reply

    • afdhaal says :

      Hi there,
      I’m extremly sorry for the delay in my reply. I was working with a website called http://www.istudyroom.com

      Well, I know that this year chemistry exam is pretty tough… So SOMETIMES the total marks for A grade might be a bit low than other years.

      Well, to get a A grade, you should have ATLEAST scored 36 or 37 out of 50… That’s the minimum.. But If you have done essay part well, then the MCQ marks varies…

    • afdhaal says :

      if you wana contact me immediately and get replies within hours, come to http://www.istudyroom.com/forum/

  29. sandaru eshan ranaweera says :

    please i need the correct answers soon becoz ihv a/l in 2012

  30. sandaru eshan ranaweera says :

    sorry in 2013

  31. lina says :

    i want the support seminar paper 2012. pls update it! pleeeeeeez

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