2018
AIIMS
MCQ
AIIMS 2018
Assertion (A) Graphite is an example of tetragonal crystal system.
Reason (R) For a tetragonal system, $a=b \neq c$ and $\alpha=\beta=90^{\circ}, \gamma=120^{\circ}$.
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).
C.
(A) is true and (R) is false.
D.
Both (A) and (R) are false.