Question

Herapathite (iodo sulphate of quinine ) is used in production of
A) Achromatic prism
B) Polaroid
C)Biprism
D) Solar cell

Answer 1

Answer:

B polaroid........................

Answer 2

(B) polaroid

Explanation:

1. 4QH2·3SO4·2I3·6H2O is the chemical formula for Herapathite (iodo sulphate of quinine).
2. In the chemical formula given above, 'Q' represents the quinine.
3. (R)-[(2S,4S,5R)-5-ethenyl-1-azabicyclo[2.2.2]octan-2-yl]-(6-methoxyquinolin-4-yl)methanol;sulfuric acid;tetra-tri-iodide is the IUPAC name of herapathite
4. It is dichroic in nature
5. Dichroic - the dichroic substance can show varieties of colors when see in various directions
6. Also in different direction they can polarize the light, as they have different absorption coefficient.
7. Aligned crystals of herapathite are applied to electric field, then they starts to absorb the polarized light which perpendicular to its direction.
8. After that, they can transmit the light in the parallel direction.
9. This results in the usage of Herapathite in the manufacturing or in the production of Polaroid.

To Learn More ...

1) What is polarizing angle? Give two uses of a Polaroid

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