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Question

Metals react with water to form oxides or hydroxides and

A
Hydrogen
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B
Oxygen
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C
Carbon dioxide
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D
Carbon monoxide
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Solution

The correct option is C Hydrogen
Metals react with water to form metal oxides or metal hydroxide (froming an alkaline solution) and hydrogen gas.
2Na+2H2O2NaOH+H2
2K+H2O2KOH+H2
Ca+H2OCa(OH)2+H2
2Al+3H2OAl2O3+H2
3Fe+4H2OFe2O3+4H2
Magnesium requires the water to be in the form of steam for a clearly observable reaction to take place.

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