The freezing point depression of a $0.001 \ m$ aqueous solution of $[Pt(NH_3)_4 Cl_4]$ is $0.0054^{\circ} C$. If $K_f$ for water is $1.80 \ K \ kg \ mol^{-1}$,determine the correct formula of the complex.
- A$[Pt(NH_3)_4 Cl_3] Cl$
- B$[Pt(NH_3)_4 Cl_2] Cl_2$
- C$[Pt(NH_3)_4 Cl] Cl_3$
- D$[Pt(NH_3)_4 Cl_4]$
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What is $Z$ in the following reaction sequence?
$C_6H_5NH_2$ $\xrightarrow[(i) NaNO_2 + HCl / 273 \ K]{(ii) H_3PO_2 + H_2O}$ $\xrightarrow[(iii) CO, HCl, \text{anhydrous } AlCl_3/CuCl]{} Z$
$C_6H_5NH_2$ $\xrightarrow[(i) NaNO_2 + HCl / 273 \ K]{(ii) H_3PO_2 + H_2O}$ $\xrightarrow[(iii) CO, HCl, \text{anhydrous } AlCl_3/CuCl]{} Z$
Which option is correct to match section $A$ with section $B$?
Section $A$ Section $B$ $(i)$ Nitrosomonas $(a)$ $\text{Nitrite} \rightarrow \text{Nitrate}$ $(ii)$ Agrobacterium $(b)$ $\text{Nitrogen fixing bacteria}$ $(iii)$ Rhizobium $(c)$ $\text{NO}_3^- \rightarrow \text{N}_2$ $(iv)$ Nitrobacter $(d)$ $\text{Ammonia} \rightarrow \text{Nitrite}$ $(e)$ $\text{Denitrifying bacteria}$
| Section $A$ | Section $B$ |
| $(i)$ Nitrosomonas | $(a)$ $\text{Nitrite} \rightarrow \text{Nitrate}$ |
| $(ii)$ Agrobacterium | $(b)$ $\text{Nitrogen fixing bacteria}$ |
| $(iii)$ Rhizobium | $(c)$ $\text{NO}_3^- \rightarrow \text{N}_2$ |
| $(iv)$ Nitrobacter | $(d)$ $\text{Ammonia} \rightarrow \text{Nitrite}$ |
| $(e)$ $\text{Denitrifying bacteria}$ |
During which time interval is the particle described by these position graphs at rest?
Let $f(x)=e^x$,$g(x)=\sin ^{-1} x$ and $h(x)=f(g(x))$,then $\frac{h^{\prime}(x)}{h(x)}$ is equal to
In a pseudo first order hydrolysis of ester in water,the following results were obtained.
$t/s$ $0$ $30$ $60$ $90$ $Ester/mol\, L^{-1}$ $0.55$ $0.31$ $0.17$ $0.085$
What will be the average rate of reaction between the time interval $30$ to $60$ seconds?
| $t/s$ | $0$ | $30$ | $60$ | $90$ |
|---|---|---|---|---|
| $Ester/mol\, L^{-1}$ | $0.55$ | $0.31$ | $0.17$ | $0.085$ |
What will be the average rate of reaction between the time interval $30$ to $60$ seconds?
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