Water is said to be permanently hard when it contains
- ASulphates of $Mg$ and $Ca$
- BBicarbonates of $Mg$ and $Ca$
- CSulphates of $Cu$ and $Hg$
- DCarbonates and bicarbonates of $Mg$ and $Ca$
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Similar Questions
Discuss the principle and method of softening of hard water by synthetic ion-exchange.
Difficult
View SolutionSystematic name of $H_2O$ (oxide of hydrogen) is
Easy
View SolutionMatch List $I$ with List $II$ and select the correct answer using the codes given below the lists:
$1.$ Heavy water $a.$ Bicarbonates of $Mg$ and $Ca$ in water $2.$ Temporary hard water $b.$ No foreign ions in water $3.$ Soft water $c.$ $D_2O$ $4.$ Permanent hard water $d.$ Sulphates and chlorides of $Mg$ and $Ca$ in water
| $1.$ Heavy water | $a.$ Bicarbonates of $Mg$ and $Ca$ in water |
| $2.$ Temporary hard water | $b.$ No foreign ions in water |
| $3.$ Soft water | $c.$ $D_2O$ |
| $4.$ Permanent hard water | $d.$ Sulphates and chlorides of $Mg$ and $Ca$ in water |
Medium
View SolutionWhich of the following statements does not define the characteristic property of water,"Water is a universal solvent"?
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View SolutionProvide general information about water $(H_2O)$.
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