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Author Topic: chemistry practical exams on 29th october  (Read 3780 times)

Offline heemvi

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Re: chemistry practical exams on 29th october
« Reply #15 on: October 29, 2009, 03:33:22 pm »
wel practical ws olryt
we got nly 2 questions
no titrations
Thanks u....
bt i made a little mistk
i 4got to put -ve sign in 1st question
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Offline Sorceres

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Re: chemistry practical exams on 29th october
« Reply #16 on: October 29, 2009, 03:57:43 pm »
Quote from: heema on October 29, 2009, 03:33:22 pm
wel practical ws olryt
we got nly 2 questions
no titrations
Thanks u....
bt i made a little mistk
i 4got to put -ve sign in 1st question

no titration?? but mine had 3 question and i had titration  ???
u mean we're not doing the same paper? 9701/33?
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Offline osmosis

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Re: chemistry practical exams on 29th october
« Reply #17 on: October 29, 2009, 04:19:05 pm »
mine was paper 33....yes, there's 3 questions...
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Offline polaroidsoflove

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Re: chemistry practical exams on 29th october
« Reply #18 on: October 29, 2009, 05:30:46 pm »
I had 3 questions aswell.
The first was titration and heating.
Second was identification of ions.
The last was a bit tricky. Did you guys get lead as the cation present in FA9?
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Offline Lana Wolf

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Re: chemistry practical exams on 29th october
« Reply #19 on: October 29, 2009, 06:23:34 pm »
Quote from: polaroidsoflove on October 29, 2009, 05:30:46 pm
I had 3 questions aswell.
The first was titration and heating.
Second was identification of ions.
The last was a bit tricky. Did you guys get lead as the cation present in FA9?


ya....i got lead....good to know...*sigh*..i was worried about tht........
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Offline Sorceres

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Re: chemistry practical exams on 29th october
« Reply #20 on: October 30, 2009, 01:51:14 am »
Quote from: polaroidsoflove on October 29, 2009, 05:30:46 pm
I had 3 questions aswell.
The first was titration and heating.
Second was identification of ions.
The last was a bit tricky. Did you guys get lead as the cation present in FA9?

yeah i got Pb2+ as well. By the way what's the chemical process? i put oxidation but some of my friends say esterification?
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Offline heemvi

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Re: chemistry practical exams on 29th october
« Reply #21 on: October 30, 2009, 05:26:04 am »
infct i do paper 31!!
ova here its divided in2 2 parts....
those who r competin 4 scholarships do paper 31 n those who rnt do paper 32
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Offline osmosis

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Re: chemistry practical exams on 29th october
« Reply #22 on: October 30, 2009, 06:54:12 pm »
yes! I got Pb2+ too...... :)
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Offline wunderkind

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Re: chemistry practical exams on 29th october
« Reply #23 on: October 31, 2009, 04:16:35 am »
hey,
what were the reagents you used for Q2 ?

did anyone else feel a time constraint during this exam ?

thanks,
Wunderkind
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Offline Sorceres

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Re: chemistry practical exams on 29th october
« Reply #24 on: October 31, 2009, 04:21:34 am »
Quote from: wunderkind on October 31, 2009, 04:16:35 am
hey,
what were the reagents you used for Q2 ?

did anyone else feel a time constraint during this exam ?

thanks,
Wunderkind

i used AgNO3 and dilute HCl..  hbu?
i think this time the experiment is quite okay..
i had bout 25mins left.. but during my trials i really didn't have time to finish..
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Offline wunderkind

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Re: chemistry practical exams on 29th october
« Reply #25 on: October 31, 2009, 04:35:28 am »
i used PbNO3 and dil H2SO4 ... didnt really get the expected results for that one.
lol maybe time was a problem for me b'cuz i re-tried this one hoping to get wat i expected

everyone seems to have done well, so the percentile should be high this time around.
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Offline Lana Wolf

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Re: chemistry practical exams on 29th october
« Reply #26 on: November 02, 2009, 09:13:46 am »
Quote from: Sorceres on October 30, 2009, 01:51:14 am
yeah i got Pb2+ as well. By the way what's the chemical process? i put oxidation but some of my friends say esterification?


its oxidation...i got that confirmed.....  :)
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