Discussion
Number of minerals in Mohs scale of hardness is :
Answer: B
The Mohs scale has 10 minerals.
Friedrich Mohs defined it in 1812 as a ranking by scratch resistance, each mineral scratching those below it: 1 talc, 2 gypsum, 3 calcite, 4 fluorite, 5 apatite, 6 orthoclase, 7 quartz, 8 topaz, 9 corundum and 10 diamond.
The scale is ordinal, not proportional: diamond is far more than ten times as hard as talc, and the gap between corundum and diamond is the largest of all. It has neither 8, 12 nor 15 reference minerals.
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