x

Choose Country Code

x

Direction

x

Ask a Question

  • Ask a Question
  • Scan a Question
  • Post MCQ
  • Note: File extension must be of jpg, jpeg, png, bmp format and file size must not exceed 5 MB
x

Ask a Question

x

x
x
x
Hire a Tutor

Answers and Solutions

What's Your Question?
Answer

Hardness is the property of water which prevents the formation of lather or foam and needs large quantities of soap'. It forms scales in not water pipes, heaters, boilers where the temperature of water is increased.

Answer

Hardness is caused in water due to the presence of dissolved bicarbonates,chlorides and sulphates of calcium and magnesium ions .

Hard water doesn't give lather with soap as these dissolved salts which cause hardsness precipitate with soap.

Answer
Hardness is defined as the concentrations of calcium and magnesium ions expressed in terms of calcium carbonate. These minerals in water can cause some everyday problems.
Answer

Hardness is the physical property of a material that enables it to resist plastic deformation, penetration, indentation or scratching. The SI unit of hardness is N/mm².

Answer
Define hardness.explain why hard water does not give lather with soap?

Post Answer and Earn Credit Points

Get 5 credit points for each correct answer. The best one gets 25 in all.

Post Answer