a question of chem

L.K.

which of the following statement(s) is are incorrect?
A: Zinc can be extracted by carbon reduction
B. Sodium can be extracted by displacement reaction with Titanium
C. Copper can be made by electrolysis of Copper sulphate solution
D. Solder is an alloy of Lead and Tin

piyopiyo

should be B[[tk_30]]

L.K.

D點解岩????...

piyopiyo

原帖由 L.K. 於 16-7-2008 15:01 發表
D點解岩????...

check in wiki pls[[tk_30]]And this is the fact...no any reason behind[[tk_30]]

L.K.

我明la..
以為係梳打...

Zend

原帖由 L.K. 於 16-7-2008 03:05 PM 發表
我明la..
以為係梳打...

=.=...

D, 都係cut 左d use of metals lor.
不過正常人都知B一定唔arm

L.K.

原來我係唔正常[[onion_50]]

hallosiuming

原帖由 L.K. 於 16-7-2008 15:17 發表
原來我係唔正常[[onion_50]]

我都唔係幾正常

piyopiyo

Zend A in AL Chem[[tk_30]]你地覺得唔識係正常ge野.佢會覺得好唔正常[[tk_23]]

[S]【YU】

我無A都覺得好正常-.-[[tk_32]]