Hardness of the water is commonly measured in terms of -

Related MCQs

• Permanent - hardness of water may be removed by addition of –
• Which method will be employed to test the hardness of water?
• Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
• The two metal ions that cause hardness to water are:
• Maximum permissible concentration of total hardness in drinking water is –
• Nitrogen in water is commonly found in the form of -
•              gives hardness to stainless steel.
•            gives hardness to stainless steel.
• Water can be separated from alcohol water mixture by –
• Hard water and soft water can be distinguished by using –