Q60 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Inorganic Chemistry · Chapter: Analytical Chemistry · Topic: Analytical Chemistry – General · Marks: 2 · Difficulty: Easy
Inspectrofluorimetric determination in solution A. absorbance of analyte solution is kept near to 0.05 B. oxygen is eradicated from solution C. pH of solution is controlled D. wavelength of incident light is always above 400 nm
(a)A, B and D
(b)B, C and D
(c)A, B and C
(d)A, C and D
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
For spectrofluorimetry, absorbance is kept low (~0.05) to avoid inner-filter effects, quenching O₂ is removed, and pH is controlled. The excitation λ is chosen at the absorption band, not necessarily above 400 nm. A, B and C (c).
Study loop for Analytical Chemistry