Biology; Chemistry; Physics: Post your doubts here!

[funky brat]

Alright guys,best of luck for the paper,i'm heading to the center..

Best of luck to you too. :')

 

[funky brat]

Isee ka hee to masla hai, koee ajeeb colour waghaira day dia to kia karna hai

Bhai ek number ka ho ga bus apki distinction nahi a saky gey.

 

[funky brat]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s13_qp_42.pdf
Q3

Propanol= C3H7OH
Propnanoic acid= C2H5COOH
Ester= acid+ alcohol
so C2H5COOC3H7

 

[ciesgetoveralready]

I dont remember who posted those 10 points of colours of compounds and everything. But THANKYOU SO SO SO MUCH! I passed it on to all my class mates and MA just because of your help sab ka faida hua. May Allah always give you success!

 

[Fate0]

Paper went very well Alhamdulillah.

 

[Abdul Hanan]

paper went gr8 Alhamdulillah. Just got the color of AgBr wrong :/

 

[funky brat]

I got the colour of silver bromide wrong.

 

[Bhaijan]

I got the colour of Iodine wrong.

 

[kirann]

I just got my second last 6 mark question wrong And. im not feeling good at all

 

[ciesgetoveralready]

I GOT ALL THE COLOURS CORRECT THANKS TO THAT POST :") :")

 

[ciesgetoveralready]

I messed up with the moles

 

[Abdul Hanan]

guys in last question last part the temperature was to be halved and volumes same as of previous part right?

 

[funky brat]

guys in last question last part the temperature was to be halved and volumes same as of previous part right?

When temperature was halved corresponding volumes had to be seen.

 

[Fate0]

http://studyguide.pk/Past Papers/CIE/Cambridge O Levels/5070 - Chemistry/5070_w07_qp_4.pdf

Titration is almost same.
Last question is ditto identical.
And the reducing agent/oxidising agent

 

[Fate0]

When temperature was halved corresponding volumes had to be seen.

Nopes. Maximum temperature was halved but the volumes remain same.

 

[funky brat]

http://studyguide.pk/Past Papers/CIE/Cambridge O Levels/5070 - Chemistry/5070_w07_qp_4.pdf

Titration is almost same.
Last question is ditto identical.
And the reducing agent/oxidising agent

For those who did the past papers.

 

[funky brat]

Nopes. Maximum temperature was halved but the volumes remain same.

Yeah, sorry that was written actually.

 

[kirann]

last and second last question was from nov 2007 repeated questions i knew it.

 

[Bhaijan]

It was confusing to get the rioght measurement for the liquids. I drew two straight lines, from the origin, they intersected, but I only extended one of the lines. Can anyone remember the answers?
I remember a few answers, 3.5 C Temperature.
Compared to the rest of the past papers this paper's difficulty was like them. There was nothing out of the ordinary, except for the color of the oxidizing and reducing agents, and the omission of identification of cations and anions. I guess they will make up for this omission in Paper 2 and Paper 1.
If you do remeber the answers, pm me.

 

[Abdul Hanan]

It was confusing to get the rioght measurement for the liquids. I drew two straight lines, from the origin, they intersected, but I only extended one of the lines. Can anyone remember the answers?
I remember a few answers, 3.5 C Temperature.
Compared to the rest of the past papers this paper's difficulty was like them. There was nothing out of the ordinary, except for the color of the oxidizing and reducing agents, and the omission of identification of cations and anions. I guess they will make up for this omission in Paper 2 and Paper 1.
If you do remeber the answers, pm me.

i remember they were 9 ,4.5 ,7 ,3.5