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Date Posted: 08:28:53 07/28/01 Sat
Author: Mr. Yeo Woei Ter
Subject: Practice 1 - Question 19

How come people can make mistake with this question???

Remember that those reactive metals are extracted from their ores using electrolysis? (see page 195 of textbook!)

This is mainly because reactive metals form compounds with very strong bonds. Thus, it is not possible for carbon monoxide to break these bonds and reduce the oxides of these metals(Page 196, third paragraph!).

Aluminium, magnesium, sodium, calcium are extracted from their ores using electricity!

So, the answer can only be C!!!

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