River water is harder than rain water because it

Keep practicing — related questions

• Water, on passing over the rocks, becomes hard because it dissolves
• Many drops make a ( ).
• The density of the sea water is _____ than density of the river water.
• Temporary hardness of water is due to the presence of
• Aakriti
• The hardness of water is due to
• Fresh water is a precious resource. People build ____ across rivers to create ____ of water.
• Rain water is a kind of