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Why is the aqueous solution of non-metal oxides often acidic?

Answer and explanation

Correct answer: They can form acidic substances with water

The governing concept is the acidic nature of many non-metal oxides. When a suitable non-metal oxide reacts with water, it can form an oxyacid; for example, CO2 + H2O ⇌ H2CO3. The resulting solution contains acidic species and may turn blue litmus red. Therefore option A is correct. Options B and C reverse the usual behaviour, and D is too absolute because some non-metal oxides dissolve or react with water.

Related tags

Non-Metal OxidesAcidic OxideLitmusMetals And Non MetalsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScienceClass 10 Mcq

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