MCQ
Correct order of acidic strength
- A$HF > HCl > HBr > HI$
- ✓$H_3PO_2 > H_3PO_3 > H_3PO_4$
- C$B(OH)_3 > H_2CO_3 > HNO_3$
- D$H_2O > H_2S > H_2Se > H_2Te$
$O _3$ can acts as only oxidizing agent due to its unstable nature and decomposes to give nascent oxygen.
$HNO _3$ : Nitrogen is present in its highest oxidation state i.e., $+5$ so it can act as only oxidizing agent.
$SO _2$ :Sulphur is present in $+4$ oxidation state so it can act as both oxidizing as well as reducing agent.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
(Given: $\Delta H _{\text {vap }}$ for water at $373\, K =41\, kJ / mol$, $\left. R =8.314\, JK ^{-1} mol ^{-1}\right)$