Discussion
Readings drift downward through a long run. What is the most likely cause?
Answer: A
Dissolved solids build up on the burner slot, narrowing it and disturbing the flame, which reduces the number of atoms in the beam. A warming lamp would drift upward if anything, and detector and flame changes are not systematic in this way. Aspirating water between samples and cleaning the slot are the routine remedies, and the drift's direction is what identifies it as a fouling problem rather than an electronic one. Checking the units of each quantity catches a wrong formula before the arithmetic begins.
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