Permanent hardness in water is due to the presence of which of the following ions?
- A$SO_4^{2-}$
- B$HCO_3^{-}$
- C$NO_3^{-}$
- D$Cl^{-}$
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Similar Questions
Which of the following is heavy water?
Medium
View SolutionMelting point,enthalpy of vaporisation and viscosity data of $H_2O$ and $D_2O$ is given below.
$Property$ $H_2O$ vs $D_2O$ $Melting$ $point/K$ $273.0$ vs $276.8$ $Enthalpy$ $of$ $vaporisation$ $at$ $(373 \ K) / kJ \ mol^{-1}$ $40.66$ vs $41.61$ $Viscosity/centipoise$ $0.8903$ vs $1.107$
On the basis of this data,explain in which of these liquids intermolecular forces are stronger?
| $Property$ | $H_2O$ vs $D_2O$ |
| $Melting$ $point/K$ | $273.0$ vs $276.8$ |
| $Enthalpy$ $of$ $vaporisation$ $at$ $(373 \ K) / kJ \ mol^{-1}$ | $40.66$ vs $41.61$ |
| $Viscosity/centipoise$ | $0.8903$ vs $1.107$ |
On the basis of this data,explain in which of these liquids intermolecular forces are stronger?
Medium
View SolutionMatch the following:
List-$I$ (Reactions) List-$II$ (Methods) $A$. $Mg(HCO_3)_2 \rightarrow Mg(OH)_2 \downarrow + 2 CO_2 \uparrow$ $I$. Clark's method $B$. $M^{2+} + Na_4P_6O_{18}^{2-} \rightarrow [Na_2MP_6O_{18}]^{2-} + 2 Na^{+}$ $II$. Ion exchange method $C$. $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2 CaCO_3 + 2 H_2O$ $III$. Boiling $D$. $2 NaZ + Ca^{2+}_{(aq)} \rightarrow 2 Na^{+} + CaZ_2$ ($Z$ = Zeolite) $IV$. Calgon's method
| List-$I$ (Reactions) | List-$II$ (Methods) |
|---|---|
| $A$. $Mg(HCO_3)_2 \rightarrow Mg(OH)_2 \downarrow + 2 CO_2 \uparrow$ | $I$. Clark's method |
| $B$. $M^{2+} + Na_4P_6O_{18}^{2-} \rightarrow [Na_2MP_6O_{18}]^{2-} + 2 Na^{+}$ | $II$. Ion exchange method |
| $C$. $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2 CaCO_3 + 2 H_2O$ | $III$. Boiling |
| $D$. $2 NaZ + Ca^{2+}_{(aq)} \rightarrow 2 Na^{+} + CaZ_2$ ($Z$ = Zeolite) | $IV$. Calgon's method |
Which of the following hydrides has the lowest boiling point?
Medium
View SolutionWhen zeolite (hydrated sodium aluminium silicate) is treated with hard water,the sodium ions are exchanged with:
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