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Chemistry P31

Osmix1995

Osmix1995

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raysonzaffar said:
Recycling ..............adv. It saves energy and {{{money}}}
..............................disadv...difficult to distinguish b/w different polymers cuz each n everyone of them has to be separated.....adds costs.
Burning.............adv.....avoids sight pollution
.................................disadv.....releases toxic gases
Click to expand...

yes u r correct to :)
 
Jigar

Jigar

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Its electrode A............almost same question repeated in 1994 paper..........................I know guys u would ask for the paper but.....................the thing is having problem to being uploaded...................I tried editing it but it brings error........................First one was Zinc and second one Vanadium...............read on oxidation on net if u want the evidence.................................
 
Osmix1995

Osmix1995

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many people got out of the exam thinking they answered right but believe me
some are saying crap and telling lies about there exam and that they did good
some people do bad but they don't know it :)

so i say the curve will be low
 
blossoms

blossoms

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guyzz....
in the electrode question which one is oxidation and reduction i rote cathode instead of riting B.....s u peeple comented earlier it is B so wil i get markss!!
plzzzzzzzzz say yessss!!! plzz... (n)
 
R

raysonzaffar

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Jigar said:
Its electrode A............almost same question repeated in 1994 paper..........................I know guys u would ask for the paper but.....................the thing is having problem to being uploaded...................I tried editing it but it brings error........................First one was Zinc and second one Vanadium...............read on oxidation on net if u want the evidence.................................
Click to expand...
but here both were iron !!!!!!!!!!!!!!!!!:confused::mad:o_O:(
 
R

raysonzaffar

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Jigar said:
Its electrode A............almost same question repeated in 1994 paper..........................I know guys u would ask for the paper but.....................the thing is having problem to being uploaded...................I tried editing it but it brings error........................First one was Zinc and second one Vanadium...............read on oxidation on net if u want the evidence.................................
Click to expand...
tell me which question in 1994 which season ..........i hav the answer booklet frm 1993 onwards but not the questions !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
R

raysonzaffar

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wajeehaz said:
i rote sodium and calcium
cux i thought tht onli a higher metal in the series would displace zinc and react wid it..guess it ws silly of me :(
Click to expand...
u r the first person who has wrte tht ans.........me too.......i dont noe wht everyone is sayin !!!!!!!!!!!!!!!!!!!!!!o_O
 
Osmix1995

Osmix1995

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L-Girl said:
http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w11_gt.pdf

can someone please explain this :confused:
Click to expand...

the guys principal apparently sucks.... i got my info from my uncle working in the british council ...

you turn the marks on the paper to 100% and then you multiply by 2 to get your mark from 200
for example you got 40 out of 60 which is 20% from the whole syllabus in paper 6
and paper 3 you got 60 out of 80 which is 50% from the whole syllabus
and paper 1 you got 30 out of 40 which is 30% from the whole syllabus

you do (40/60 x 20)+(60/80 x 50)+(30/40 x 30) you will get 73.3333 out of 100 them multiply by 2 to make it out of 200 you will get 146.6666 which is a an A* (if you are variant one)

the gt for an A* for variant 1 in o/n 2011 session was 142 so you barely made it

here i explained everything http://www.xtremepapers.com/community/threads/how-cie-calculate-the-curve.15175/page-2


(it took me time to re-type this so plz like atleast :) and thank you )
 
R

raysonzaffar

Messages
267
Reaction score
167
Points
53
Osmix1995 said:
the guys principal apparently sucks.... i got my info from my uncle working in the british council ...

you turn the marks on the paper to 100% and then you multiply by 2 to get your mark from 200
for example you got 40 out of 60 which is 20% from the whole syllabus in paper 6
and paper 3 you got 60 out of 80 which is 50% from the whole syllabus
and paper 1 you got 30 out of 40 which is 30% from the whole syllabus

you do (40/60 x 20)+(60/80 x 50)+(30/40 x 30) you will get 73.3333 out of 100 them multiply by 2 to make it out of 200 you will get 146.6666 which is a an A* (if you are variant one)

the gt for an A* for variant 1 in o/n 2011 session was 142 so you barely made it

here i explained everything http://www.xtremepapers.com/community/threads/how-cie-calculate-the-curve.15175/page-2


(it took me time to re-type this so plz like atleast :) and thank you )
Click to expand...
thnzx man......but y multiply.......is this a maths equation !!!!!!!!!!!!!!!!!!!!!!!!!!!
 
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