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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