Types of Crystalline Solids

Q. The crystal system having edge length a = b = c and axial angles, α = β = γ ≠ 90°, is

कोर लम्बाई a = b = c तथा अक्षीय कोण, α = β = γ ≠ 90° वाला क्रिस्टल निकाय है

1. Orthorhombic
   
   विषमलम्बाक्ष
2. Rhombohedral
   
   त्रिसमनताक्ष
3. Hexagonal
   
   षट्कोणीय
4. Monoclinic
   
   एकनताक्ष

Q. The unit cell cube length for $LiCl$ $\left(NaCl\text{like structure}\right)$ is $5.14\stackrel{o}{A}.$ Assuming anion-anion is in contact, the ionic radius for chloride ion will be-

Q.

Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ \left(1\right).Non-polarMolecularsolids& \left(i\right)Coulombicorelectrostaticforces\\ \left(2\right).H-BondedMolecularsolids& \left(ii\right).H-bonding\\ \left(3\right).Ionicsolids& \left(iii\right).Metallicbonding\\ \left(4\right).Weakdispersionforces& \left(iv\right).Weakdispersionforces\\ \left(5\right).Metallicsolids& \left(v\right).dipole–dipoleinteraction.\\ & \left(vi\right).covalentBonding.\end{array}$

1. (1)-(iv), (2)-(ii), (3)-(iv), (4)-(vi), (5)-(iii)

2. (1)-(iv), (2)-(ii), (3)-(i), (4)-(vi), (5)-(iii)

3. (1)-(iv), (2)-(ii), (3)-(iv), (4)-(vi), (5)-(iii)

4. (1)-(v), (2)-(i), (3)-(iv), (4)-(vi), (5)-(ii)

Q. Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ \left(1\right)HCl& \left(i\right)PolarMolecularsolid\\ \left(2\right)Ice& \left(ii\right)Non-polarMolecularsolid\\ \left(3\right)CC{l}_4& \left(iii\right)H-bondedMolecularsolid\end{array}$

1. (1)-(i), (2)-(iii), (3)-(ii)

2. (1)-(ii), (2)-(iii), (3)-(i)

3. (1)-(iii), (2)-(ii), (3)-(i)

4. (1)-(i), (2)-(ii), (3)-(iii)

Q. Which of the following characteristics is/are true regarding metallic solids?

Q.

Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ \left(1\right).Non-polarMolecularsolids& \left(i\right)Coulombicorelectrostaticforces\\ \left(2\right).H-BondedMolecularsolids& \left(ii\right).H-bonding\\ \left(3\right).Ionicsolids& \left(iii\right).Metallicbonding\\ \left(4\right).Weakdispersionforces& \left(iv\right).Weakdispersionforces\\ \left(5\right).Metallicsolids& \left(v\right).dipole–dipoleinteraction.\\ & \left(vi\right).covalentBonding.\end{array}$

1. (1)-(iv), (2)-(ii), (3)-(iv), (4)-(vi), (5)-(iii)

2. (1)-(iv), (2)-(ii), (3)-(i), (4)-(vi), (5)-(iii)

3. (1)-(iv), (2)-(ii), (3)-(iv), (4)-(vi), (5)-(iii)

4. (1)-(v), (2)-(i), (3)-(iv), (4)-(vi), (5)-(ii)

Q. In Schottky defect, number of missing anions and cations in ionic solids are same.

1. True
2. False

Q. Ammonium chloride crystallises in a body centered cubic lattice with a unit distance of $386pm$. Calculate the radius (in pm) of $N{H}_4^{+}$ ion. If the radius of $C{l}^{-}$ ion is $181pm$
$(Take\sqrt{3}=1.73)$

Q. $AB$ crystallizes in a body centred cubic lattice with edge length $\left(a\right)$ equal to $387pm.$ The distance between two oppositely charged ions in the lattice is:
(AIPMT - 2010)

1. $335pm$
2. $200pm$
3. $300pm$
4. $250pm$

Q. Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ \left(1\right)HCl& \left(i\right)PolarMolecularsolid\\ \left(2\right)Ice& \left(ii\right)Non-polarMolecularsolid\\ \left(3\right)CC{l}_4& \left(iii\right)H-bondedMolecularsolid\end{array}$

1. (1)-(i), (2)-(iii), (3)-(ii)

2. (1)-(ii), (2)-(iii), (3)-(i)

3. (1)-(iii), (2)-(ii), (3)-(i)

4. (1)-(i), (2)-(ii), (3)-(iii)