Which pair of oxides is acidic in nature?
Show Hint
- \(\mathrm{CaO,\ SiO_2}\)
- \(\mathrm{B_2O_3,\ CaO}\)
- \(\mathrm{B_2O_3,\ SiO_2}\)
- \(\mathrm{N_2O,\ BaO}\)
The Correct Option is C
Solution and Explanation
\(\mathrm{CaO}\) and \(\mathrm{BaO}\): oxides of alkaline earth metals, basic.
\(\mathrm{N_2O}\): neutral oxide (does not react with acids or bases).
\(\mathrm{B_2O_3}\): oxide of a non-metal, acidic (gives boric acid with water).
\(\mathrm{SiO_2}\): oxide of a metalloid, acidic (reacts with bases to give silicates).
The only pair in which both oxides are acidic is \(\mathrm{B_2O_3,\ SiO_2}\).
Answer: (3) \(\mathrm{B_2O_3,\ SiO_2}\)
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