MCQ
The reagent commonly used to determine hardness of water volumeterically (titrimetrically) is:
- AOxalic acid.
- BDisodium salt of EDTA.
- CSodium citrate.
- ✓Sodium thiosulphate.
✓
Answer
Correct option: D.
Sodium thiosulphate.
- Sodium thiosulphate.
EDTA is used for estimating $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ present in hard water.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
First and second excitation potentials of hydrogen atom (in $eV$) would be respectively
→The $IUPAC$ name of $C{H_3}C \equiv N$ is
→How much water should be added to $200 \,c.c$ of semi normal solution of $NaOH$ to make it exactly deci normal ............ $\mathrm{cc}$
→A $s{p^3}$ hybridized orbital contains
→At $298\,K$, the equilibrium constant is $2 \times 10^{15}$ for the reaction.
→$Cu ( s )+2 Ag ^{+}( aq ) \rightleftharpoons Cu ^{2+}( aq )+2 Ag ( s )$
The equilibrium constant for the reaction.$\frac{1}{2} Cu ^{2+}( aq )+ Ag ( s ) \rightleftharpoons \frac{1}{2} Cu ( s )+ Ag ^{+}( aq )$ is $x \times 10^{-8}$. The value of $x$ is (Nearest Integer)
Which is not one of the laws of chemical combinations?
on mercuration and demercuration produces
The difference between heats of reaction at constant pressure and at constant volume for the reaction $2{C_6}{H_6}(l) + 15{O_2}(g) \to 12C{O_2}(g) + 6{H_2}O(l)$ at ${25\,^o}C$ in $kJ $ is
→Identify the pair of binary corresponds in which nitrogen exhibits the lowest and the highest oxidation state.
Cathode rays are made up of