- A$Mg$
- ✓$Zn$
- C$C$
- D$Al$
German silver $(Cu + Zn + Ni)$
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$Cl_2(aq)+H_2SO_4(aq) \rightarrow S(s)+2H^+(aq)+2Cl^-$
The rate equation for this reaction is
rate $=k[Cl_2][H_2S]$
Which of these mechanisms is/are consistent with this rate equation ?
$A.\,\, Cl_2 + H_2S \rightarrow H^+ + Cl^- + Cl^+ + HS^-\,\, (slow)$
$Cl^+ +HS^- \rightarrow H^+ +Cl^- +S \,(fast)$
$B.\,\, H_2S \rightleftharpoons H^+ + HS^-\,$ (fast equilibrium)
$Cl_2^+ + HS^- \rightarrow 2CI^- + H^+ + S\,\, (Slow)$

| List$-I$ Name of oxo acid | List$-II$ Oxidation state of $P$ |
| $(a)$ Hypo phosphorous acid | $(i) +5$ |
| $(b)$ Orthophosphoric acid | $(ii)+4$ |
| $(c)$ Hypo phosphoric acid | $(iii) +3$ |
| $(d)$ Orth phosphorous acid | $(iv)+2$ |
| $(v)+1$ |
Choose the correct answer from the options given below

$\mathop {\lim }\limits_{{X_A} \to 0} \left ( \frac{P_B^0}{X_B} \right )$ and $\mathop {\lim }\limits_{{X_B} \to 0}\left ( \frac{P_A^0}{X_A} \right )$ are
$A _{( g )} \rightarrow 2 B _{( g )}+ C _{( g )}$
$P _{0}$ be initial pressure of $A$ and $P _{ t }$ the total pressure at time $'t'$. Integrated rate equation is :
The molar mass of the biopolymer is $.....\,\times 10^{4} \,\mathrm{~g}\,\mathrm{~mol}^{-1}$. (Round off to the Nearest Integer)
[Use : $\mathrm{R}=0.083\, \mathrm{~L}\, bar \,\mathrm{mol}^{-1} \,\mathrm{~K}^{-1}$ ]