Solid State PYQ - Physical Chemistry (AP EAPCET)

The fcc crystal contains how many atoms in each unit cell?

A metal crystallises with a fcc lattice, the edge of whose unit cell is \(x \mathrm{~pm}\). The diameter of this metal atom would be .............. pm.

In the face centered unit cell, the lattice points are present at

Match List I with List II.

Which of the following solids is not a molecular solid?

The number of network solids and ionic solids in the list given below is respectively. \(\mathrm{H}_2 \mathrm{O}\) (ice), \(\mathrm{AlN}, \mathrm{Cu}, \mathrm{CaF}_2\), diamond, MgO , \(\mathrm{CCl}_4, \mathrm{ZnS}, \mathrm{Ag}, \mathrm{NaCl}, \mathrm{SiO}_2\)

Photographic plates are prepared by coating emulsion of which of the following in gelatin?

If molten NaCl contains \(\mathrm{SrCl}_2\) as impurity, crystallisation can generate

Which of the following statement is correct for fcc lattice?

An element crystallising in fcc lattice has a density of \(8.92 \mathrm{~g} \mathrm{~cm}^{-3}\) and edge length of \(3.61 \times 10^{-8} \mathrm{~cm}\). What is the atomic weight of element? \(\left(N=6.022 \times 10^{23} \mathrm{~mol}^{-1}\right)\)

The diffraction pattern of crystalline solid gave a peak at $20=60^{\circ}$. What is the distance ( in cm ) between the layers which gave this peak?

( $\lambda$ of $X$-rays is $1.54 \mathring{A}$ ) $\left(\sin 30^{\circ}=0.5, \sin 60^{\circ}=0.866 ; n=1\right)$

Some substances are given below

$$\begin{aligned} & \mathrm{Ag}, \mathrm{CO}_2(s), \mathrm{SiO}_2, \mathrm{ZnS} \\ & \mathrm{SO}_2(s), \mathrm{AlN}, \mathrm{HCl}(\mathrm{~s}), \mathrm{H}_2 \mathrm{O}(\mathrm{~s}) \end{aligned}$$

The number of molecular solids and network solids in the above list is respectively.

A solid compound is formed by atoms of $A$ (cations), $B$ (cations) and O (anions). Atoms of O form hcp lattice. Atoms of $A$ occupy $25 \%$ of tetrahedral holes and atoms of $B$ occupy $50 \%$ octahedral holes. What is the molecular formula of solid?