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   5** 操 Past Paper 正確方法       【人生】考完 DSE 有咩做?       【大學】三大BBA 優勢比較       【大學】面試必問問題

DSE00 Mock Exam 2016


PAPER 1A    vision 1.4 updated        (6/3/2017)
PAPER 1B   vision 1.4 updated         (25/3/2016)
PAPER 2   vision 2.1 updated            (27/2/2017)
Marking Scheme      vision 2.1 updated    (6/3/2017)  



可在下面發問


49 則留言:

  1. 6di) anode is marked as metal x.so if x is a inert electrode, O2 will form instead

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    1. Thx for your response=]
      metal X is not an inert electrode, so it will undergoes oxidation to give metal ion=]

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    1. sorry, the problem is fixed now =]]

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  3. there are some mistakes in the marking scheme plx take a look (Q11)

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    1. soory it is not Q11 is Q3

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    2. thx for your correction. I have updated a new vision and change the question

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  4. Question 23 should be identical
    Thats the value of this question

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  5. For paper 2 figure 1 the temperature should be different to give different yield%

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    1. yes, you are right. already corrected

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  6. Paper 2 Q3b 一定有acid 嘅OH bond 但無alcohol OH bond 但點解答案話一定唔係acid

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    1. As the absorption peak is within the range of OH bond (acid)

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    2. you are right. The question is amended =]

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  7. mc q1 )
    co2 should be soluble in water , should the answer be b?

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    1. The official answer found in JingKung is D because CO2 only slightly dissolve in water so the set-up is still work. But I cant find related question from CE and DSE so I decide to change the question. Thanks for your suggestion=]

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  8. paper 1b question 6d i,
    why we can deduce metal X is Cr metal

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    1. 因為個solution係Cr(NO3)3, 而且個實驗係coat層 Cr上去

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    2. 所以條metal一定要喺Cr in order to make the concentration of solution unchange?

      定個set up一定要喺咁?

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  9. hello i wanna ask Q34 , sulphur molecule is S8 while Oxygen molecule is O2
    why one mole of sulphur and one mole of oxygen contain the same number of atoms ?

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    1. 2g of S8= 2/(32x8)0.007815 mol
      0.007815 mol of S8 contain = 0.007815 x 8 =0.0625 mol of S atom

      1 g of O2 = 1/(16x2) =0.03125 mol
      0.03125 mol of O2 contain = 0.03125 x 2 = 0.0625 mol of O atom


      So, they both contain 0.0625 mol of atom and (2) is correct.

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  10. 想問下有冇Cut-Off ?

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  11. Hello, I want to ask for Q19, is -diol can be considered as a type of alkanol or not?

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  12. for paper1b q5a can process 2 and 3 反轉?
    5b iii) can the answer be cheap?
    6d1 ) can i write X instead of Cr?

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    1. 5) cant, cracking produce ethene and other hydrocarbon, distallation to get pure ethene.

      5b iii) Yes

      6di) Yes, but the charge must be 3+

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  13. paper2 3b ii 1 why acid is not acceptable?

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    1. paper2 1b iiican u include the step ?? i dont know how to calculate

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    2. acid have odour??

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    3. yes, acid smell like vinegar

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    4. ln(k/0.0000312)=-110000/8.31 *(1/453 - 1/483)

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    5. 唔洗除2.3??

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    6. 用log計得晤得?

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  14. 幾時用in 幾時用log???

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  15. 作者已經移除這則留言。

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  16. 1B 第7條 c(i)同(ii)點計?

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  17. how to do paper1A q12?? :(

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  18. Where can I find the marking scheme of paper 2 ?

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  19. 1A Q9 why there is white ppt?

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  20. 1A Q21 why the ans is A?

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  21. paper 1b Q7c can u show the calculations?

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