- AContain estrogen only.
- BContain progesterone only.
- ✓Contain a mixture of estrogen and progesterone derivatives.
- DProgesterone enhances ovulation.
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| $a.$ | $\ce{As_2O_3 < SiO_2 < P_2O_3 < SO_2}$ | 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. |

$\mathop {\begin{array}{*{20}{c}}
{{\mkern 1mu} {\mkern 1mu} Ph}\\
|\\
{C{H_3} - C - OH}\\
|\\
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_2} - C{H_3}{\mkern 1mu} {\mkern 1mu} }
\end{array}}\limits_{{\rm{'D'}}} $ $\xrightarrow{{HI}}$ products
If the configuration of substrate is $D$, then configuration of products will be

(Molecular wight of $HA= 60, \,d_{solution} = 1\,gm/ml$)