Discussion
A powder has a specific surface area of 10 square metres per gram. How much surface is present in 500 grams?
Answer: C
Correct answer: 5,000 square metres
\[ 10 \times 500 = 5{,}000\ \mathrm{m^2}. \] Half a kilogram of powder carrying the area of a football pitch is worth pausing over: it is why fine powders sinter readily, why they adsorb moisture from the air, and why some of them are pyrophoric.
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