McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 51. |
in body centred crystal structure, there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» C. 8 | |
| 52. |
in body centred crystal structure, there is number of face atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 53. |
in body centred crystal structure, there is number of center atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» A. 1 | |
| 54. |
in body centred crystal structure, the average number of atoms per unit cell is |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» B. 2 | |
| 55. |
in a crystal structure, the average number of atoms per unit cell is 2 |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal closed pack |
| Answer» B. body centred | |
| 56. |
in body centred crystal structure, the relationship between lattice constant and radius of atom is given by |
| A. | a=r/2 |
| B. | r=a/2 |
| C. | r=√3a/4 |
| D. | a=√3r/4 |
| Answer» C. r=√3a/4 | |
| 57. |
the average packing factor for body centred crystal structure is given as |
| A. | 0.52 |
| B. | 0.68 |
| C. | 0.74 |
| D. | 0.85 |
| Answer» B. 0.68 | |
| 58. |
the coordination number for simple body structure is given as |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 14 |
| Answer» B. 8 | |
| 59. |
in a face centred crystal structure there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» C. 8 | |
| 60. |
in a face centred crystal structure there is number of face atoms |
| A. | 0 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» D. 6 | |
| 61. |
in a face centred crystal structure there is number of centred atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 62. |
in a face centred crystal structure, the average number of atoms per unit cell is |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 63. |
in a crystal structure, the average number of atoms per unit cell is 4 |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 64. |
in a face centred crystal structure, the relationship between lattice constant and radius of atom is given by |
| A. | r=√3a/4 |
| B. | a=√3r/4 |
| C. | a=r/2√2 |
| D. | r=a/2√2 |
| Answer» D. r=a/2√2 | |
| 65. |
the average packing factor for face centred crystal structure is given as |
| A. | 0.52 |
| B. | 0.68 |
| C. | 0.74 |
| D. | 0.85 |
| Answer» C. 0.74 | |
| 66. |
the coordination number for a face centred crystal structure is given by |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 14 |
| Answer» C. 12 | |
| 67. |
in a hexagonal close packed crystal structure, there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 12 |
| Answer» D. 12 | |
| 68. |
in a hexagonal close packed crystal structure, there is number of |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» A. 2 | |
| 69. |
in a hexagonal close packed crystal structure, there is number of center atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 3 |
| Answer» D. 3 | |
| 70. |
in a hexagonal close packed crystal structure, the average number of atoms per unit cell is |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 71. |
in a crystal structure, the average number of atoms per unit cell is 6 |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» D. hexagonal close packed | |
| 72. |
the average packing factor for hexagonal close packed crystal structure is given as |
| A. | 0.52 |
| B. | 0.68 |
| C. | 0.74 |
| D. | 0.85 |
| Answer» C. 0.74 | |
| 73. |
the coordination number for a hexagonal close packed crystal structure is given as |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 14 |
| Answer» C. 12 | |
| 74. |
the examples of simple cubic crystal structure are |
| A. | cr, mo. fe, ta, w |
| B. | al, cu, ag, au, ni |
| C. | mg, cd, zn, co, be |
| D. | none of the above |
| Answer» D. none of the above | |
| 75. |
the examples of body centred cubic structure are |
| A. | cr, mo. fe, ta, w |
| B. | al, cu, ag, au, ni |
| C. | mg, cd, zn, co, be |
| D. | none of the above |
| Answer» A. cr, mo. fe, ta, w | |
| 76. |
the examples of face centred cubic structure are |
| A. | cr, mo. fe, ta, w |
| B. | al, cu, ag, au, ni |
| C. | mg, cd, zn, co, be |
| D. | none of the above |
| Answer» C. mg, cd, zn, co, be | |
| 77. |
the examples of hexagonal close packed crystal structure are |
| A. | cr, mo. fe, ta, w |
| B. | al, cu, ag, au, ni |
| C. | mg, cd, zn, co, be |
| D. | none of the above |
| Answer» A. cr, mo. fe, ta, w | |
| 78. |
Chromium has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» B. body centred | |
| 79. |
Aluminum has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 80. |
Magnesium has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» D. hexagonal close packed | |
| 81. |
Zinc has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» D. hexagonal close packed | |
| 82. |
Copper has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 83. |
Molybdenum has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» B. body centred | |
| 84. |
α - Fe has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» B. body centred | |
| 85. |
Tungsten has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» B. body centred | |
| 86. |
Silver has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 87. |
Lead has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 88. |
Cadmium has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» D. hexagonal close packed | |
| 89. |
Cobalt has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» D. hexagonal close packed | |
| 90. |
the correct order of packing factor for BCC, FCC, HCP is |
| A. | 0.52,0.68,0. 74 |
| B. | 0.68,0.74,0. 74 |
| C. | 0.74, 0.68, 0.52 |
| D. | 0.52,0.68,0. 74 |
| Answer» B. 0.68,0.74,0. 74 | |
| 91. |
the correct order of packing factor for SC, BCC, FCC is |
| A. | 0.74, 0.52, 0.68 |
| B. | 0.68, 0.74, 0.74 |
| C. | 0.74, 0.68, 0.52 |
| D. | 0.52, 0.68, 0.74 |
| Answer» D. 0.52, 0.68, 0.74 | |
| 92. |
the correct order of packing factor for FCC, HCP, BCC is |
| A. | 0.52, 0.68, 0.74 |
| B. | 0.74, 0.74, 0.68 |
| C. | 0.74, 0.68, 0.52 |
| D. | 0.52, 0.68, 0.74 |
| Answer» B. 0.74, 0.74, 0.68 | |
| 93. |
which of the following is not true for FCC structure |
| A. | it has atomic packing factor of 0.52 |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive two faces |
| D. | none of the above |
| Answer» A. it has atomic packing factor of 0.52 | |
| 94. |
which of the following is true for FCC structure |
| A. | it has atomic packing factor of 0.74 |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive two faces |
| D. | all of the above |
| Answer» D. all of the above | |
| 95. |
which of the following is true for SC structure |
| A. | it has atomic packing factor of |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive |
| D. | none of the above |
| Answer» A. it has atomic packing factor of | |
| 96. |
which of the following is not true for SC structure |
| A. | it has atomic packing factor of 0.58 |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive two faces |
| D. | none of the above |
| Answer» D. none of the above | |
| 97. |
which of the following is true for BCC structure |
| A. | it has atomic packing factor of 0.52 |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive two faces |
| D. | none of the above |
| Answer» B. it has no central atom | |
| 98. |
which of the following is not true for BCC structure |
| A. | it has atomic packing factor of 0.58 |
| B. | it has no central atom |
| C. | iat has face atom shared by consecutive two faces |
| D. | none of the above |
| Answer» D. none of the above | |
| 99. |
a crystalline material has atoms in ordered location which is |
| A. | random, non repetitive |
| B. | perfect, repetitive |
| C. | perfect, non repetitive |
| D. | none of the above |
| Answer» B. perfect, repetitive | |
| 100. |
the mechanical property of material depends on |
| A. | size |
| B. | weight |
| C. | crystal structure |
| D. | none of the above |
| Answer» C. crystal structure | |
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