alleryWhen sodium oxide reacts with water, what type of product is formed?
AA neutral salt (sodium chloride)
BAn acid (sulphuric acid)
CAn alkali (sodium hydroxide)
DA gaseous oxide (sulphur dioxide)
Answer & Solution
Correct answer: C. An alkali (sodium hydroxide)
1. Some metal oxides are soluble in water and react with it.
2. Sodium oxide reacts with water as Na2O + H2O gives 2NaOH.
3. Sodium hydroxide is an alkali, so the product is an alkali.
4. Acids form from nonmetal oxides, not from sodium oxide, ruling that option out.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.103_
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