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Aluminium, iron and zinc do not react with cold or hot water but react with which substance?
ASteam
BKerosene
CLiquid nitrogen
DMolten salt
Answer & Solution
Correct answer: A. Steam
1. Aluminium, iron and zinc are unreactive towards cold or hot water.
2. The text states they react with steam to form their oxides.
3. Hydrogen gas is released in this reaction with steam.
4. So the correct substance is steam.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.104_
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