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  • Assertion (A) : Graphite is slippery and used as a lubricant.
Question 1:
Assertion (A) : Graphite is slippery and used as a lubricant.
Reason (R) : Graphite has free electrons. ?
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is NOT the correct explanation of A.
Feedback Graphite possesses a layer structure with two successive layers held by weak forces and able to slide over one another. So, graphite is slippery and this property finds its use as a lubricant..
C. A is true but R is false.
D. A is false but R is true.

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