4) I=lo.eHt a) This is statement of Beer's Law
b) This is statement of Lambert's law
c) This is combined Beer Lambert's Law.
d)None of the above
5) Which statement is incorrect for optical density?
a) Optical density is ratio I/ lo b)E=log I/ lo
c) It is also known as extinction ratio
d)E = -ɛct
6) The absptiometry is:
a) Visual method of comparision
b) Microscopic method of comparision
c) Method of duplication of solution
d) Photoelectric method of comparision
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