Which from following is obtained as major product when methoxybenzene is treated with nitrating mixture?

Which of the following compounds is carcinogenic and toxic?

Pt has FCC structure with an edge length of unit cell $392$ pm. What is the radius of Pt?

In a cubic unit cell of an ionic compound, the eight corners are occupied by anions and cations at the center of the cube. Calculate the volume of the unit cell if density of the unit cell is $4 \text{ g cm}^{-3}$.
[Molar mass of compound $= 168.6$ g mol$^{-1}$ and $N_A = 6.022 \times 10^{23}$]