chem pp1

[Adahshan]

http://www.xtremepapers.me/CIE/Cambridg ... 8_qp_1.pdf

2, Shouldnt it be b?

 

[She7taman]

I checked the marking scheme, it *is* B, is there anything you need clarification on?

 

[Adahshan]

oh nvm. sorry lol

but i need help in this;

http://www.xtremepapers.me/CIE/Cambridg ... _qp_01.pdf

39.

 

[rainbowtiara24]

It is b ..because alkenes are unsaturated ..They will undergo addition

 

[gary221]

oh nvm. sorry lol

but i need help in this;

http://www.xtremepapers.me/CIE/Cambridg ... _qp_01.pdf

39.

its A
as the no of species will be less as thr r very few species who can survive in polluted water


hpe u gt it!!!

 

[She7taman]

We're suddenly in Biology, but okay.

The answer would be A. You might be confused between A and B. B is incorrect because it implies that there are a lot of species in the area. We know that pollution decreases bio-diversity, so a lot of species would die.

There might be a large number of the remaining species, because these would be bacteria and such creatures that thrive in polluted areas. Hope that answered your question. Feel free to ask for more clarification.

 

[themathshater]

wow dis is complicated...!!
wich nimber shud be more fr da river to be more polluted..da no of organisms or species......?????????