Chemistry: Post your doubts here!

[nightrider1993]

can anyone upload may/june 2012 paper 2 pls?

 

[Varuna0911]

hello where can I get recent chm examiners reports?

 

[nightrider1993]

hello where can I get recent chm examiners reports?

Inforogot the link bt i may b able to upload it

 

[Varuna0911]

okay if that's possible

 

[Beca1206]

thanks so much!!

 

[Beca1206]

DO u have the answer sheet for may june paper 2??

 

[ziemah11]

hey..can you post me the sample answer for paper 5 chemistry any year from 2007 onward? i don't want the mark scheme i want the exact answer. i haven't learn it but the exam around the corner. thank you

 

[yumichikabyakuya renji]

Hey guys, why don't we post all yearly P1 MCQ's preparation thread for chemistry with solved explanations just as there is for physics?

is there any for physics?? cud u plz paste the link here??

 

[bamteck]

http://www.xtremepapers.com/community/threads/as-physics-p1-mcqs-yearly-only.17330/

is there any for physics?? cud u plz paste the link here??

 

[NouranAyman]

yes it does effect it.

Thaank youuuu

 

[yumichikabyakuya renji]

http://www.xtremepapers.com/community/threads/as-physics-p1-mcqs-yearly-only.17330/

hey thXx

 

[yumichikabyakuya renji]

Hi, did anyone do the chemistry practical of may/jun 2012 paper 35? I'v a doubt on the last part in Q3, it says add FA5 to FA4 i got a white precipitate , then it said add HCl and i got a yellow/orange ppt..
the identity from the MS is sulphate ion, can s0me0ne explain?

 

[yumichikabyakuya renji]

Take it upon yourself like taking chocolates.
"Endo" is a latin word which means to absorb/ to take in/ to accept... you accept chocolates so, its a positive thing. So an endothermic reaction is +ve kJmol-1
"Exo" is yet another latin word which means to release/to give out... so you don't like when chocolates go away from you, so you have a negative feeling. Exothermic reactions are -ve kJmol-1
Hope it helped.

i too liked the chocolate, n now it became more easy to understand

 

[yumichikabyakuya renji]

Hello there can any1 clear my doubt over:
View attachment 14979

heyy
the answer is certainly not D since the ketone won't react with sodium metal
R u sure the answer is A?? since propan-1-ol also, just like propanone won't react with tollen's reagent
anybody help!!

 

[Amy Bloom]

heyy
the answer is certainly not D since the ketone won't react with sodium metal
R u sure the answer is A?? since propan-1-ol also, just like propanone won't react with tollen's reagent
anybody help!!

Yeah the book says A.

 

[bamteck]

Hello ! Please help me for June 2012 P13
No. 19, 21, 22, 23, 24, 25, 26, 27,28, 40
Thank you in anticipation

 

[Varuna0911]

Inforogot the link bt i may b able to upload it

could you find if that's possible

 

[NouranAyman]

Take it upon yourself like taking chocolates.
"Endo" is a latin word which means to absorb/ to take in/ to accept... you accept chocolates so, its a positive thing. So an endothermic reaction is +ve kJmol-1
"Exo" is yet another latin word which means to release/to give out... so you don't like when chocolates go away from you, so you have a negative feeling. Exothermic reactions are -ve kJmol-1
Hope it helped.

That was cute xx

 

[Lyfroker]

Cn sm1 explain me the charge to mass ratio of a particle (e/m)

 

[yumichikabyakuya renji]

Cn sm1 explain me the charge to mass ratio of a particle (e/m)

i was wondering about that in may/jun 2007 Q40( physics). we need to divide proton no. by nucleon no., n i don't get it why...