List of top Chemistry Questions on General Chemistry asked in TS EAMCET

A metal crystallizes in bcc lattice with an edge length of 4 \AA. How many metal atoms can be placed in a two-dimensional open box of length 35 \AA and width 35 \AA?

Observe the following:
$O_2, C_6H_6, Cu^{2+}, Cu^+, MnO, Fe_3O_4, MgFe_2O_4, NaCl, O_2^+$.
The number of diamagnetic and paramagnetic species is respectively

NaCl is crystallized in the presence of small quantity of SrCl$_2$. The formula of crystallized solid is Na$_{0.9998}$Sr$_{0.0001}$Cl. The number of cationic vacancies per mole of this solid is (N=6$\times10^{23}$ mol$^{-1}$)

Identify the crystal system in which body-centered lattice is not present.