Name the substance which makes water permanently hard. - Vidyadip

Question

Name the substance which makes water permanently hard.

✓

Answer

Sulphates and chlorides of magnesium and calcium

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[1 Mark Question Answer]" from Water→Water — all question types→CHEMISTRY STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

How does the percentage of oxygen in the atmosphere remain constant, inspite of the fact that a large amount of it is used tor combustion and respiration?

Give the impact of acid rain: On water bodies

The elements calcium, strontium and barium were put in one group or family on the basis of their similar properties.
What were those similar properties?

State the information conveyed by the following equation:
$Zn_{(s)}+ 2HCl_{(aq)}→ZnCl2_{(aq)}+ H2↑$

What are inert elements?

Balance the following equation:
$H_2O + Cl_2→HCl+ O_2$

Balance the equations:
$\mathrm{Hg}\left(\mathrm{NO}_3\right)_2(\mathrm{~s})->\mathrm{Hg}(\mathrm{l})+\mathrm{NO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g})$

Define the term:
Ion

What is thevalencyof :
sulphurin $SF_6$

Does the mass and charge on positive rays remain same with the change in nature of gas in a discharge tube?