While all of you (at least those of you who are not taking Bio on Monday) are out celebrating the end of your O Levels, I’m forced by my sister stuck at The Temple to finish up the solutions (along with the relevant explanations, where applicable) to the two combined science papers today 🙁
2010 ‘O’ Level Oct/Nov Combined Science MCQ Paper 1 Suggested Solutions
Physics/Chemistry 5116 (left – Latest version: 1.1) & Chemistry/Biology 5118 (right – Latest version: 1.2) – click to download
Physics/Chemistry 5116 (left – Latest version: 1.1) & Chemistry/Biology 5118 (right – Latest version: 1.2) – click to download
It’s pretty late now so please leave a comment should you spot any mistake, and I’ll try my best to reply the growing list of comments over this weekend. What a cramped timetable we have this year *rubs panda eyes*
26 Comments
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First to comment=) haha if yours answers are correct i will be glad with my results thanks very much!!!
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why is question 38 for bio answer C ?
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Why not D for qn 21? By boiling it at 100 degrees, you know this subtance is pure. Then, by doing the copper sulfate test, you know that this pure substance has water in it. And since the substance is PURE, it has to contain only water so its pure water!
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Why the answer is C.? For combined chem/bio q38
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can we have pure chemistry mcq answer? A thousand thanks
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@Melvin: *waves a thousand times*
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For qn 21 can the answer be C...because pure water is neutral neither acidic nor alkaline. Although water freezes at 0 degrees...pure water being a neutral substance is'nt wrong either..could u check. Thanks..
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@Sam: Hi Sam, there are also other compounds/mixtures like soluble salts that have pH 7 (neutral pH, that are neither acidic nor alkaline) .
Hence, it is not the best answer 🙂
And since it is given that it boils at 100 degrees, just simply reply the question that it freezes at 0 degrees. =D
Am I right, Ms Loi ?
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The only question I am not sure is qn. 12 ... 🙁
I don't really understand the question. And why couldn't it be B ?
Please reply !
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can u poost pure chem mcq pls tq
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@Passer: *waves*
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Hi, plz post the pure chem mcq answers! Thanks! 🙂
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@passerby: *waves waves* again
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Thanks for uploading the ans, Ms. Loi! Appreciate it v much. I've checked thru my ans, i guess i made quite a no. of careless mistakes. ): Anyway can you explain to me why the ans is D for Qsn 13(chem, phy)? Thanks!
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I've updated the 5118 Chemistry/Biology solutions (version 1.1) to correct an error in Q38 which should be D, as highlighted by wei406015 and wei5000.
My bad for misreading the the question - we don't live in a planet with plants devouring herbivores! *looks at my garden with suspicion*
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however, i still wrong ... 35 only..
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From the diagram for the answer to qn12, shouldn't incident rays from a distant object be (almost) parallel to the principal axis and that is why the refracted rays converge at the focal point at the other side of the lens?
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Hi there, i have problems with opening the adobe, may u just give me the answer through microsoft word (attachment) or simply emailed me the answers for Combined Science Phy/Chem 5116/01 ? Thank you very much...
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Huh so is the answer for q1 B or D? The answer written there is D. But B implies that it only freezes at 0 deg which means that it is a pure substance cause it has only one melting point? Am I right?
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Hi, can you help post Pure Biology MCQ answers too? Thanks a million :]
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hi do you know where can i get the answers for combined science 5116 paper 2 and 3? thanks a million
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Hi there! May i ask why for q21 the answer is D? I agree with the previous post that it should be B. Thanks!
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Hmmm, thanks for the answers! :/ But how do I get the question paper? :S Been googling all night, to no avail.
Thank youuu!
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@Dan: Popular Bookstore ran out of 10-year series already???
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@Miss Loi: Is there a way to get the 2010 5118 combined science paper online? 🙁 I'm using my senior's tys which is only up till 2008. 🙁 few more months till the exam... 🙁 buying a new tys would be wasteful.
Do you know any site that provides the paper? I don't mind paying for it. But to buy the entire tys again is.... 🙁 wasteful I think.
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@Dan: Umm ... doubt you'll be able to find any paper online due to copyright issues 🙁 But if you do ... :X