How many lattice points are present in a face-centred cubic unit cell?

Among the following,the crystal system which includes end-centered is

Tetragonal crystal system has the following unit cell dimensions:

Which of the following crystals has the unit cell such that $a=b \neq c$ and $\alpha=\beta=90^{\circ}$,$\gamma=120^{\circ}$?

Which of the following pairs of compounds is isomorphous?

Body-centred cubic and face-centred cubic unit cells have $n_1$ and $n_2$ effective number of atoms. Which one of the following $[n_1, n_2]$ combinations is correct?