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  1. Q

    Predict the 6/7 Marker!!

    Predicting 7 marker AAS - Assess impact to environment/society with its uses
  2. Q

    Question Chain Thread !!!

    damnit they are so hard to remember =S QUESTION: Discuss the need for alternative sources presently obtained from petrolchemical industry.
  3. Q

    Question Chain Thread !!!

    Biopolymers are polymers created naturally occuring biomass such as cellulose. They have superior properties than normal synthetic polymers are they are biodegradable, renewable and biocompatible. An example of a biopolymer is cellulose or starch. However, there have been developments to...
  4. Q

    Question Chain Thread !!!

    Cellulose is a natural condensation polymer composed of thousands of glucose monomers. During condensation polymerisation, the beta glucose monomers link together by 1-3 glycosidic bond to form cellulose. This glycosidic bond forms when two -OH react and condense out a water molecule. Celloluse...
  5. Q

    Question Chain Thread !!!

    Can someone post up the correct oxidation/reduction reactions for DRY CELL and SILVER BUTTON cell
  6. Q

    Question Chain Thread !!!

    Sulphur dioxide is used to produce sulphorous acid to preserve food such as pickles. It's low pH prevents the growth of microbes, allowing the food to stay fresher longer.
  7. Q

    UAI Guess Competition

    Re: Official UAI Guess Competition User: qqmore UAI Guess: 99.2 Actual UAI: - Date Signed: 4/11/08
  8. Q

    It is 2am

    yay 2 hrs till exam
  9. Q

    ITT: We go through the 3U paper and post up answers.

    what did u guys get for amplitude and period for 5b)?? amplitude = 2/3 ???
  10. Q

    State Ranking

    depends on your luck, one silly mistake and your out of the race
  11. Q

    How to simplify circle geometry statements?

    square of tangents = product of intercepts
  12. Q

    question

    For xy = 1/2 a^2 The focus is (a,a) ; (-a,-a) Directices: x + y = a and x + y = -a Eccentricity is always rt 2 so for xy=c^2 focus is ( rt 2 c ,rt c ) and ( -rt 2 c, - rt 2 c) ... just memorise it
  13. Q

    is the 2007 paper easy for you ?

    plz make it as hard as 2000
  14. Q

    2unit/3unit/4unit maths exam will be hard this year ??

    *prays they make it very challenging*
  15. Q

    oxygen-sensitive meter

    Winkler Method (Titration) for testing the quantitative amount of DO in a sample. Note: the method involves fixing the amount of DO in a sample and determining the DO by titration later on. 1. Manganese (II) ions and hydroxide ions are added to the water sample. The amount of insoluble brown...
  16. Q

    Is our year smarter then the past?

    check out the school cert results for 2006, we have comparatively lower band 6s/5s for eng/maths than other years.
  17. Q

    Circle question

    (ii) < ACB = < ADB = 90 degrees (tangents perpendicular to radius) <ACB + <ADB = 180 degrees BCAD is cyclic (opposite angles added up to 180 in a cyclic quadrilaterial) (iii) Since< ACB = 90 and < ADB = 90 Thus, AB must be diameter (< in semi circle = 90) But, AE = EB (=equal radius of equal...
  18. Q

    What mark do u need to get an E4 in 4u?

    From what I've heard, comparing last years results, you need around 70% for an E4 that is something like 8x/120. I reckon 80~86% i.e. 95~102/120 will get u mid 90s and 102+/120 will get you 95+. But since the marks distribution is a bell curve, you would need high 11x/120 to get the top marks.
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