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
Which of the following methods is used for the removal of only temporary hardness of water?
Medium
View SolutionThe reagent$(s)$ used for softening the temporary hardness of water is(are):
$(A)$ $Ca_3(PO_4)_2$
$(B)$ $Ca(OH)_2$
$(C)$ $Na_2CO_3$
$(D)$ $NaOCl$
$(A)$ $Ca_3(PO_4)_2$
$(B)$ $Ca(OH)_2$
$(C)$ $Na_2CO_3$
$(D)$ $NaOCl$
What is the importance of heavy water?
Easy
View SolutionExplain the difference between hard water and soft water.
Medium
View SolutionAn inorganic salt $(A)$ is decomposed on heating to give two products $(B)$ and $(C)$. Compound $(C)$ is a liquid at room temperature and is neutral to litmus,while the compound $(B)$ is a colourless neutral gas. Compounds $(A)$,$(B)$ and $(C)$ are:
DifficultAIIMS 2014
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