Question

Water which gives good lather readily with soap is known as hard water.
If this is true enter 1, if false enter 0.

Answer 1

Hard water is often indicated by a lack of lather formation when soap is agitated in water. Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone and chalk which are largely made up of calcium and magnesium carbonates.