1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

A solid has a structure in which W atoms are located at the corners of a cubic lattice. O atoms at the centre of edges and Na atom at centre of the cube. The formula for the compound is

A
$$\mathrm{NaWO}_2$$
B
$$\mathrm{NaWO}_3$$
C
$$\mathrm{Na}_2 \mathrm{WO}_3$$
D
$$\mathrm{NaWO}_4$$
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

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.
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