Crystal System and Bravais Lattice

Q. Choose the correct option:

$\begin{array}{cccc}& \text{Crystal system}& \text{Axial distance}& \text{Axial angles}\\ \text{(a)}& \text{Tetragonal}& a=b\ne c& \alpha =\beta =\gamma ={90}^{\circ }\\ \text{(b)}& \text{Monoclinic}& a\ne b\ne c& \alpha =\gamma ={90}^{\circ }\beta \ne {90}^{\circ }\\ \text{(c)}& \text{Rhombohedral}& a\ne b=c& \alpha =\beta =\gamma \ne {90}^{\circ }\\ \text{(d)}& \text{Triclinic}& a\ne b\ne c& \alpha \ne \beta \ne \gamma \ne {90}^{\circ }\end{array}$

1. a
2. b
3. c
4. d

Q.

Total number of Bravais Lattices are

1. 7

2. 10

3. 14

4. 16

Q. Match the following crystal system with their Bravais lattice

1. $\mathrm{Primitive},\mathrm{bcc},\mathrm{fcc}$
2. $\mathrm{Primitive},\mathrm{bcc},\mathrm{fcc},\mathrm{end}-\mathrm{centered}$
3. $\mathrm{Primitive}$
4. $\mathrm{End}\mathrm{centered},\mathrm{Primitive},$

Q. Which one of the following has maximum number of atoms?

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Q. Which of the following statement(s) is/are correct regarding 2-D crystal lattice?

Q.

Tetragonal crystal system has the following unit cell dimensions

[MP PMT 1993]

1. 
   

2. 
   

3. 
   

4. 
   

Q. In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells:-
AIPMT-2005

Q.

Match the following:

$\begin{array}{cc}ColumnI& ColumnII\\ 1.Hexagonal& \left(i\right)a=b=c\\ 2.Cubic& \left(ii\right)a\ne b\ne c\\ 3.Triclinic& \left(iii\right)a=b\ne c\\ 4.Monoclinic& \left(iv\right)\alpha =\beta =\gamma =90{}^{\circ }\\ 5.Tetragonal& \left(v\right)\alpha =\gamma =90{}^{\circ },\beta \ne 90{}^{\circ }\\ 6.Rhombohedral& \left(vi\right)\alpha \ne \beta \ne \gamma \ne 90{}^{\circ }\\ 7.Orthorhombic& \left(vii\right).\alpha =\beta =\gamma \ne 90{}^{\circ }\\ & \left(viii\right)\alpha =\beta =90{}^{\circ },\gamma =120{}^{\circ }\end{array}$

1. (1)–(iii), (viii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii), (v); (5)–(iii), (iv); (6)–(i) (vii); (7)–(ii), (iv)

2. (1)–(ii), (vii); (2)–(i), (vii); (3)–(iii), (iv); (4)-(i), (v); (5)–(ii), (vi); (6)–(i) (vi); (7)–(i), (iv)

3. (1)–(ii), (vii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii), (v); (5)–(ii), (iv); (6)–(i) (viii); (7)–(iii), (iv)

4. (1)–(ii), (vii); (2)–(i), (iv); (3)–(ii), (vi); (4)-(ii), (iv); (5)–(i), (viii); (6)–(iii) (iv); (7)–(iii), (vii)

Q. Tetragonal crystal system has the following unit cell dimensions:

1. $a=b=c$ and $\alpha =\beta =\gamma ={90}^{\circ }$
2. $a=b\ne c$ and $\alpha =\beta ={90}^{\circ }$, $\gamma ={120}^{\circ }$
3. $a\ne b\ne c$ and $\alpha =\beta =\gamma ={90}^{\circ }$
4. $a=b\ne c$ and $\alpha =\beta =\gamma ={90}^{\circ }$

Q.

Which of the following is correct

[DPMT 1997]

1. 
2. 
3. 
4. 

Q.

How many space lattices are obtainable from the different crystal systems

[MP PMT 1996; MP PET/PMT 1998]

1. 7

2. 14

3. 32

4. 230