Hardness of Water

Which of the following groups of ions makes the water hard?

What are the methods of removing hardness of water?

Washing soda $\left({\mathrm{Na}}_2{\mathrm{CO}}_3·10{\mathrm{H}}_2\mathrm{O}\right)$ is widely used in softening of hard water. If $1 \mathrm{L}$ of hard water requires $0.0143 \mathrm{g}$ of washing soda. What is hardness of water in terms of $\mathrm{ppm}$ of ${\mathrm{CaCO}}_3$ ?

Hardness of water is $200 \mathrm{ppm}.$ The normality of ${\mathrm{CaCO}}_3$ in the water is in the form of $\mathrm{y}\times {10}^{-3}.$ Identify $\mathrm{y}.$

Permanent hardness of water can be removed by adding-

Can temporary hardness be removed by boiling?

Washing soda $\left({\mathrm{Na}}_2{\mathrm{CO}}_3·10{\mathrm{H}}_2\mathrm{O}\right)$ is widely used in softening of hard water. If $1 \mathrm{L}$ of hard water requires $0.0143 \mathrm{g}$ of washing soda. What is hardness of water in terms of $\mathrm{ppm}$ of ${\mathrm{CaCO}}_3$ ?

Hardness of water is $200 \mathrm{ppm}.$ The molarity of ${\mathrm{CaCO}}_3$ in the water is  $\mathrm{y}\times {10}^{-3}\mathrm{M}.$ Identify the value of $\mathrm{y}$

Explain the process of removal of temporary hardness of water by Clarks method.

In Clark's process for removing hardness of water, the reagent used is

Permanent hardness of water is due to the presence of

Hardness of water cannot be removed by

_____ can be removed by boiling.

Temporary hardness can be removed from water by:

Select the method(s) that is/are used for removing the temporary hardness of the water.

Explain the removal of temporary hardness water using Clark's Method.

Assertion (A) : Permanent hardness of water is removed by treatment with washing soda.

Reason (R) : Washing soda reacts with soluble magnesium and calcium sulphate to form insoluble carbonates.

Permanent hardness in water cannot be cured by:

Which of the following is used for removing permanent hardness of water ?

Washing soda $\left({\mathrm{Na}}_2{\mathrm{CO}}_3·10{\mathrm{H}}_2\mathrm{O}\right)$ is widely used in softening of hard water. If $1 \mathrm{L}$ of hard water requires $0.0143 \mathrm{g}$ of washing soda. What is hardness of water in terms of $\mathrm{ppm}$ of ${\mathrm{CaCO}}_3$ ?