Preparing For Chemistry 5070 P1 / P2

[Rimsa]

diff bw hydrated and anhydrous copper sulphate?

http://www.xtremepapers.com/revision/gcse/chemistry/air_and_water.php

 

[Rimsa]

What is flue gas desulphurIzation????

http://www.xtremepapers.com/papers/...al O Level/Chemistry (5070)/5070_w09_ms_2.pdf
read the ms of b9 E PART

 

[Tharindu]

discuss the social, economic and environmental advantages and disadvantages of recycling metals
e.g. aluminium and copper

 

[Tharindu]

http://www.xtremepapers.com/papers/...al O Level/Chemistry (5070)/5070_w09_ms_2.pdf
read the ms of b9 E PART

Thanks DDDDDD

 

[Rimsa]

Thanks DDDDDD

no need. just pray. thats all every1 needs

 

[Tharindu]

no need. just pray. thats all every1 needs

discuss the social, economic and environmental advantages and disadvantages of recycling metals
e.g. aluminium and copper

 

[khanrocks20]

mcqs preparartion? any suggestion?

 

[khanrocks20]

http://www.xtremepapers.com/revision/gcse/chemistry/air_and_water.php

what is the formula of anhydrous and hydrated?

 

[khanrocks20]

Explain why this reaction is exothermic in terms of the energy changes that take place
during bond breaking and bond making.

 

[Dexterwarrior12]

what is the formula of anhydrous and hydrated?

CuSO4.nH2O/CuSO4

 

[Dexterwarrior12]

Explain why this reaction is exothermic in terms of the energy changes that take place
during bond breaking and bond making.

in exo..more energy is gained from formation than that required for breaking,

 

[farahdar]

mcqs preparartion? any suggestion?

Past papers..thats all i guess..

 

[Dexterwarrior12]

how

Past papers..thats all i guess..

many do u people get marks in an avrge paper 1

 

[multixamza01]

how

many do u people get marks in an avrge paper 1

30 . Agar paper boht asan ho to 31

 

[Dexterwarrior12]

30 . Agar paper boht asan ho to 31

well thats nice..

 

[syed1995]

how

many do u people get marks in an avrge paper 1

idher Masha Allah say 33-34 aa jatay hain .. Lekin Insha Allah kal ka paper aisa aayega kay sab kay 40/40 aayeingay Saray repeat questions hongay ^^

 

[Dexterwarrior12]

idher Masha Allah say 33-34 aa jatay hain .. Lekin Insha Allah kal ka paper aisa aayega kay sab kay 40/40 aayeingay Saray repeat questions hongay ^^

re peat kio ho ge,!!

 

[M Haseeb Javed]

idher Masha Allah say 33-34 aa jatay hain .. Lekin Insha Allah kal ka paper aisa aayega kay sab kay 40/40 aayeingay Saray repeat questions hongay ^^

Repeat kum hi the balke is bar unhon ne kafi tricky paper bnane ki koshish ki thi!

 

[farahdar]

how

many do u people get marks in an avrge paper 1

Ummmm..usually 30-35

 

[Pallavi Lewis]

Back to Topic .

Acid Rain :
Sulfur dioxide and Oxides of Nitrogen in the air mix with rainwater to form sulfuric acid and nitric acid respectively . This acid mixture is dilute in nature and so doesn't show any great harm but has many affects :

Limestone (Calcium Carbonate ) is an important component of cement and dissolves in acid rain (acid-carbonate reaction). So buildings and statues corrode .
Galvanished metals corrode more easily .
Fish cannot survive in acidic rainwater .
K+ and Ca+ that are important nutrients for plants get dissolved in acid rain water and get washed away .

Now next would be Ozone Depletion !

Really helpfull!