Assertion (A): Mica is a mineral made up of plates or leaves.

Reason (R): Mica deposits are found on the northern edge of the Chota Nagpur Plateau.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true, but (R) is false.

(A) is false, but (R) is true

answer is B.

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Detailed Solution

The above statement A is true; mica is a mineral made of plates or leaves. Because of its high dielectric strength, low power loss factor, insulating properties, and high-voltage resistance is used in the electrical and electronics industries. They occur in the form of plates and leaves, which can be split into thin sheets. Mica occurs in different colours, such as green, yellow, black, and red.
The above statement R is true; In India, their deposits are mostly found on the northern edge of the Chota Nagpur plateau. Hence, statement R is not the correct explanation because mica's formation and properties do not depend on the places they are found.

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