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Assertion: A quious gold colloidal solut...

Assertion: A quious gold colloidal solution is red in colour.
Reason: The colour arises due to scattering of light by colloidal gold particles.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
The colour is due to scattering. It depends upon the size of particles. Finest gold sol has red colour. As the size of the particle increase, it becomes purple , then blue and finally golden yellow.
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