L.K. 發表於 16-7-2008 14:46:12

a question of chem

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 發表於 16-7-2008 14:54:33

should be B[]

L.K. 發表於 16-7-2008 15:01:03

D點解岩????...

piyopiyo 發表於 16-7-2008 15:02:39

原帖由 L.K. 於 16-7-2008 15:01 發表 http://www.nakuz.com/bbs/images/common/back.gif
D點解岩????...
check in wiki pls[]And this is the fact...no any reason behind[]

L.K. 發表於 16-7-2008 15:05:15

我明la..
以為係梳打...

Zend 發表於 16-7-2008 15:14:33

原帖由 L.K. 於 16-7-2008 03:05 PM 發表 http://www.nakuz.com/bbs/images/common/back.gif
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. 發表於 16-7-2008 15:17:15

原來我係唔正常[]

hallosiuming 發表於 16-7-2008 17:21:11

原帖由 L.K. 於 16-7-2008 15:17 發表 http://www.nakuz.com/bbs/images/common/back.gif
原來我係唔正常[] 我都唔係幾正常

piyopiyo 發表於 16-7-2008 17:41:06

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

[S]【YU】 發表於 16-7-2008 18:17:04

我無A都覺得好正常-.-[]
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