MCQ
Which mixture forms a buffer when dissolved in $1\,lit.$ of water
- A$0.2\,mol\,\,NaOH$ and $0.2\,mol$ $\,HBr$
- B$0.2\,mol\,\,NaCl$ and $0.3\,mol$ $\,HCl$
- ✓$0.4\,mol\,\,HNO_2$ and $0.2\,mol\,\,NaOH$
- D$0.5\,mol\,\,NH_3$ and $0.5\,mol\,\,HCl$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$\mathop {CH_3^ + }\limits_{\rm{I}} $ $\mathop {{H_3}{O^ + }}\limits_{{\rm{II}}} $ $\mathop {N{H_3}}\limits_{{\rm{III}}} $ $\mathop {CH_3^ - }\limits_{{\rm{IV}}} $
$(I) 0.5\ mole$ of $O_3$ $(II) 0.5\ gm$ atom of oxygen $(III) 3.011 \times 10^{23}$ molecules of $O_2$ $(IV) 5.6\ litre$ of $CO_2$ at $STP$