Solid State PYQs - Last 10 Years

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

The number of atoms in 4.5 g of a face-centred cubic crystal with edge length 300 pm is
(Given : Density $=10 \mathrm{~g} \mathrm{~cm}^{-3}$ and $N_A=6.022 \times 10^{23}$)

In solid state, \(\mathrm{PCl}_5\) is a/an

A metal crystallises in a body centred cubic lattice with the metallic radius \(\sqrt3\mathop A\limits^o\). The volume of the unit cell in \(\mathrm{m}^3\) is

Match the column A (type of crystalline solid) with the column B (example for each type)

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If '\(a\)' stands for the edge length of the cubic systems. The ratio of radii in simple cubic, body centred cubic and face centred cubic unit cells is

Alkali halides do not show dislocation defect because

Which of the following is not true about the amorphous solids?

How many number of atoms are there in a cube based unit cell, having one atom on each corner and 2 atoms on each body diagonal of cube?

Vacant space in body centered cubic lattice unit cell is about

In chrysoberyl, a compound containing beryllium, aluminium and oxygen, oxide ions form cubic close packed structure. Aluminium ions occupy \(\frac{1}{4}\)th of octahedral voids. The formula of the compound is

A metal crystallises in bcc lattice with unit cell edge length of \(300 \mathrm{~pm}\) and density \(615 \mathrm{~g~cm}^{-3}\). The molar mass of the metal is

The correct statement regarding defects in solid is

A metal crystallises in face centred cubic structure with metallic radius \(\sqrt{2} \mathop A\limits^o\). The volume of the unit cell (in \(\mathrm{m}^3\) ) is

Silicon doped with gallium forms

1 mole of \(\mathrm{NaCl}\) is doped with \(10^{-5}\) mole of \(\mathrm{SrCl}_2\). The number of cationic vacancies in the crystal lattice will be

The number of atoms in \(2.4 \mathrm{~g}\) of body centred cubic crystal with edge length \(200 \mathrm{pm}\) is (density \(=10 \mathrm{~g} \mathrm{~cm}^{-3}, \mathrm{~N}_A=6 \times 10^{23}\) atoms\(/ \mathrm{mol}\))

Which of the following is a network crystalline solid?

Edge length of a cube is 300 pm . Its body diagonal would be

In FCC, the unit cell is shared equally by how many unit cells?

The correct statement regarding defect in solids is

In a face centred cubic arrangement of $A$ and $B$ atoms in which ' $A$ ' atoms are at the corners of the unit cell and ' $B$ ' atoms are at the face centres. One of the ' $A$ ' atoms is missing from one corner in unit cell.The simplest for...

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