MCQ
Dehydrated phosphorus trichloride in water gives
- A$HP{O_3}$
- B${H_3}P{O_4}$
- C${H_3}P{O_2}$
- ✓${H_3}P{O_3}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$2 A ( g ) \rightleftharpoons A _{2}( g )$
at $400\, K$ has $\Delta G ^{\circ}=+25.2\, kJ mol ^{-1}$.
The equilibrium constant $K _{ C }$ for this reaction is $...... \times 10^{-2}$. (Round off to the Nearest integ $\left[\right.$ Use $: R=8.3\, J mol ^{-1} K ^{-1}, \ln 10=2.3$
$\left.\log _{10} 2=0.30,1\, atm =1\, bar \right]$
$[$ antilog $(-0.3)=0.501]$
$trans-3$ -hexene $\xrightarrow{(b)}$ meso $3,4-$ hexanediol
Choose pair of reagent $(a, b)$ for above conversions