Direction: Choose the correct alternative from the following options as given below for the Assertion (A) and Reason (R) given in each of the questions.
-
Assertion (A)
Graphite is slippery and used as a lubricant.
Reason (R)
Graphite has free electrons.
-
- if both A and R are true and R is the correct explanation of A
- if both A and R are true and R is not the correct explanation of A
- if A is true but R is false
- if A is true but R is true
Correct Option: B
In graphite, each carbon atoms is linked to three other carbon atoms, while one electron in the carbon atom is delocalised. So, graphite has free electrons and it is also used as a lubricant but reason does not explains assertion.
