The maximum permissible hardness for public supplies is

Related MCQs

• The maximum permissible nitrites in public water supplies, is
• The maximum permissible colour for domestic supplies based on cobalt scale, is
• Maximum threshold number permitted for indicating the odour of public water supplies, is
• The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed
• Maximum permissible velocity 1.5 m/sec, is adopted in drains
• One degree of hardness of water means a content of salts of
• Hardness of water can be removed by boiling if it is due to
• Hardness of water is caused by
• Permanent hardness of water can be removed by
• The prescribed hardness limit of potable water ranges between