9 comments:

  1. No.45 should be B eh,major component of pewter is zinc.

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  2. answer 27 is wrong...should be A
    answer 47 should be C

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  3. boleh percaya ke ni?number 37 tu,bukan alkane hydrogenation ke?

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  4. no la sir's right. pewter is mostly tin

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  5. teacher,how u get the answer bfore 1 day chemistry exam ?
    i just check the 1st 10 question
    all the answer same with u
    coz i scare wrong a lot so i just check 1st 10 so i won't regret

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  6. Sir, you might want to set your "local time", to GMT + 8, as it's misleading.

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  7. i think the only thing yg kinda salah is num 47 because..soda lime class with boron? i dont know. hehe. anonymous..37 tu ngam la its substitution. alkane is an unreactive saturated hydrocarbon :)

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  8. Q. 42 shouldn't the answer is B. the temperature is not increase because it has - in heat change. sorry if i mistaken. :)

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