1. Give three examples where poolarimeters are used in daily ruitine processes.

Question

1. Give three examples where poolarimeters are used in daily ruitine processes. Explain the working principle in those specific applications.

2. Refractive index of ethanol-water mixture is not linear at extreme ends as seen from the figure below. Try to explain this deviation from linearity.

3. Polarimeters are especially useful in the sugar industry. They are used to identify different sugars. Describe the sugar identification process.

4.Why critical angel is used in refractive index measurements. What will be the advantage?

5. Normally, plane polarized light is used for polarimetric measurements, can we use circularly polarized light for the same purpose?

Explanation / Answer

1.Because many optically active chemicals such as sucrose, are stereoisomers, a polarimeter can be used to identify which isomer is present in a sample

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