Which of the following statements about Ultraviolet Spectroscopy are correct?
(i) It operates in the 200-400 nm spectral region.
(ii) It is used in the quantitative determination of concentrations of the absorber in solutions.
(iii) It works on the principle of Beer-Lambert law.
(iv) It is used for the separation of macromolecules based on their size.
1
(i) and (ii) only
2
(i), (ii), and (iii) only
3
(ii) and (iv) only
4
(i), (ii), (iii), and (iv)