EXERCISE

The difference between titrant and titrate is

Which of the following is not correct? Hydrochloric acid cannot be used in place of dil. ${\mathrm{H}}_2{\mathrm{SO}}_4$ in ${\mathrm{KMnO}}_4$ titrations because

In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (a), (b), (c) and (d) out of which one is correct?

The number of cations out of the following which are detected by ammonium carbonate in the presence of ${\mathrm{NH}}_4\mathrm{OH}$ is:
${\mathrm{Ca}}^{2+}, {\mathrm{Al}}^{3+}, {\mathrm{Pb}}^{2+}, {\mathrm{Ba}}^{2+}, {\mathrm{Mg}}^{2+}$

The number of radicals present in group $\mathrm{IV}$ is

The number of acidic radicals out of the following is 

${\mathrm{Cl}}^{-}, {\mathrm{Pb}}^{2+}, {\mathrm{CH}}_3{\mathrm{COO}}^{-}, {\mathrm{Zn}}^{2+}, {\mathrm{Cd}}^{2+}, {\mathrm{Br}}^{-}, {\mathrm{NO}}_3^{-}, {\mathrm{SO}}_4^{2-}, {\mathrm{Ca}}^{2+}$

$500 \mathrm{mL}$ of $\raisebox{1ex}{$\mathrm{N}$}\!\left/ \!\raisebox{-1ex}{$20$}\right. {\mathrm{KMnO}}_4$ solution is equivalent to $20 \mathrm{mL}$ of the given oxalate solution. Then normality of given oxalate solution is

$20 \mathrm{mL}$ of $x \mathrm{M} {\mathrm{KMnO}}_4$ solution required for the oxidation of $100 \mathrm{mL}$ of $3\mathrm{M} {\mathrm{FeSO}}_4$ solution. Here $x$ is