Home › Maharashtra SSC (Class 10) › Chemistry › Metallurgy › When sodium oxide reacts with water, what type o…
When 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_
Related questions
Germanium and silicon used as semiconductors are purified by zone refining becauseNickel is refined by heating the impure metal in a stream of CO to form a volatile carbonyFrom an Ellingham diagram at 1500 K, $\Delta G^\circ$ for $2Fe+O_2\rightarrow 2FeO$ is $-3From an Ellingham diagram, aluminium can reduce which of the following oxides?In an Ellingham diagram the line for the formation of carbon monoxide ($2C + O_2
ightarroAn Ellingham diagram is a plot ofIn the cyanide process, gold is recovered from the leached solution $[Au(CN)_2]^-$ by addiIn the electrolytic refining of copper, the anode and cathode are respectively