| Read the assertion and reason carefully to mark the correct option out of the options given below : |
| Assertion : When a finely divided active carbon or clay is stirred into a dilute solution of a dye, the intensity of colour in the solution is decreased. |
| Reason : The dye is adsorbed on the solid surface. |
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 but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
Both assertion and reason are true and reason is the correct explanation of assertion. The surface of a solid (or liquid) tends to attract and retain other molecules when it is brought in contact with a gas or a solution.
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