Discussion
Hardness is conventionally expressed as an equivalent quantity of
Answer: D
Correct answer: calcium carbonate
A water contains several different hardness-producing salts, and expressing each as the mass of calcium carbonate that would cause the same hardness makes them additive, so a single figure describes the water. Calcium carbonate was chosen because its molar mass is a convenient 100 and it is the substance actually deposited as scale.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development