MCQ
Which of the following molecules represent $D$ form :
- A

- B

- C

- ✓






Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| $a.$ | $\ce{As_2O_3 < SiO_2 < P_2O_3 < SO_2}$ | Acid strength. |
| $b.$ | $\ce{AsH_3 < PH_3 < NH_3}$ | Enthalpy of vapourisation. |
| $c.$ | $\ce{S < O < Cl < F}$ | More negative electron gain enthalpy. |
| $d.$ | $\ce{H_2O > H_2S > H_2Se > H_2Te}$ | Thermal stability. |

$Ca\left( s \right)|C{a^{ + 2}}_{\left( {aq.} \right)}||F{e^{ + 2}}_{\left( {aq} \right)}|Fe\left( s \right)$
$E_{C{a^{ + 2}}/Ca}^o = - 2.87\,V$ ; $E_{Fe/F{e^{ + 2}}}^o = 0.41\,V$