Permanent hardness of water can be removed by

Related MCQs

• Hardness of water can be removed by boiling if it is due to
• By boiling water, hardness can be removed if it is due to
• One degree of hardness of water means a content of salts of
• Hardness of water is caused by
• The prescribed hardness limit of potable water ranges between
• In slow sand filters, the turbidity of raw water can be removed only up to
• If V is total consumption of water in litres for a population of N individuals, per capita consumption or water allowance for the water supply Q, is given by
• The maximum permissible hardness for public supplies is
• In plain sedimentation tanks under normal conditions, impurities are removed upto
• When the reduced level of the water source is higher than the reduced level of the consumer's place, water is generally supplied