Some Basic Principles Of Organic Chemistry Question 291
Question: Rotation of plane polarised light is measured by [CPMT 1985; DCE 2001]
Options:
A) Manometer
B) Polari meter
C) Viscometer
D) Refractometer
Show Answer
Answer:
Correct Answer: B
Solution:
Polari meter is an instrument used for measuring the optical rotation.
It consists of two Nicol prisms, one called the polarizer (near the light source) and the other called the analyser (near the eye).
In between the polarizer and analyser, a glass tube containing the solution of an optically active compound is placed.
