Biology; Chemistry; Physics: Post your doubts here!

[a.abid]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Chemistry (5070)/5070_s08_qp_1.pdf
mcq 1

i cudnt myself comprehend the question....

 

[MustafaMotani]

i cudnt myself comprehend the question....

jee nitrogen hai first few will be contaminated by air so ans is nitrogen

thanx anyways for tries
the ans in ms is D nitrogen

 

[syed1995]

weLL yeah but I couldnt have guessed dat during the paper

Chalo shukar hai abhi hi solve hogaya .. warna paper mein tu kaam hojana tha

 

[rabiafarooq101]

i cudnt myself comprehend the question....

hope aisay nah he ahay

 

[a.abid]

Answer tu C hi hai .. aur pta tha .. just wanted to know the meaning of abrasive .. thanks guys

welcome

 

[multixamza01]

weLL yeah but I couldnt have guessed dat during the paper

i cudnt myself comprehend the question....

it's easy . A little thinking was required . Do not hastly answer questions , take your time . Paper bhaga nai ja raha hota!

 

[asd]

thanx anyways for tries
the ans in ms is D nitrogen

I thought you guys would be knowing this -_-

 

[a.abid]

hope aisay nah he ahay

me toooo......

 

[MustafaMotani]

it's easy . A little thinking was required . Do not hastly answer questions , take your time . Paper bhaga nai ja raha hota!

mjay laga paper bhaag jae ga

 

[rabiafarooq101]

if it cums na I will rem all of u and smile thanks guys

 

[MustafaMotani]

I thought you guys would be knowing this -_-

am not examiner..

 

[MustafaMotani]

if it cums na I will rem all of u and smile thanks guys

 

[a.abid]

I thought you guys would be knowing this -_-

yaar ab hum saaray einstein tou nai hain kay humain saaray answers aatay hon gay

 

[daredevil]

Answer Nitrogen hai ? Pagal ho kia :\ Marking Scheme is wrong dude .. aayi kahan say saali nitrogen =\

its nitrogen buz bhai nitrogen is always present in air. and ap ne jab test tube uss container pe invert ker k rakhi to uss ki gas pump out ker k vaccuum kia tha us mein?? nhi na?? to air to present hogi uss mein. aur aik mein 78% nitrogen present hoti hai so nitrogen is contaminating the first few samples. us k baad jab usey dispose ker detey hain (i don't know how so don't ask me) then bs O2 is left [baki gases bohhhhttt minute maount mein hoti hain iss liye we don't ocnsider them to b contaminating] hope that helped.

 

[syed1995]

if it cums na I will rem all of u and smile thanks guys

hahaha same here.. !!

 

[a.abid]

Today in the physics paper,on that magnetic field wala question I was like...LOL hum kal yahi tou discuss kar rahay thay

 

[rabiafarooq101]

I repeat it just read question carefully in chem it requires alot of recall and learning so just make sure u know ur theory

 

[asd]

Today in the physics paper,on that magnetic field wala question I was like...LOL hum kal yahi tou discuss kar rahay thay

I was like DOUBLE LOL
*Doesn't even know which discussion is being talked about here*

 

[MustafaMotani]

Today in the physics paper,on that magnetic field wala question I was like...LOL hum kal yahi tou discuss kar rahay thay

really ?? i must have come late
bdw I got it ryt

 

[a.abid]

really ?? i must have come late
bdw I got it ryt

yeah really.... i mean kay hum almost yahi baat discuss kar raye thay kay woh compass ka kya affect hota hay and all...

 

[MustafaMotani]

I repeat what it just read question carefully in chem it requires alot of recall and learning so just make sure u know ur theory

I would say understanding and concentration is more important..