(A): The hardness of silica is less than that of diamond . (R): In silica, each silicon atom is surrounded by two oxygen atoms whereas in diamond each carbon atom is surrounded by 4 carbon atoms

(A): The hardness of silica is less than that of diamond . (R): In si

1.	(A): The hardness of silica is less than that of diamond . (R): In silica, each silicon atom is surrounded by two oxygen atoms whereas in diamond each carbon atom is surrounded by 4 carbon atoms
Answer» a. Both A and R are true, and R is correct EXPLANATION of A b. Both A and R are true, and R is not the correct explanation of A C. A is true but R is FALSE d. A is false but R is true Answer :C