MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a metal forms a FCC lattice with unit edge length 500 pm. Calculate the density of the metal if its atomic mass is 110. |
| A. | 2923 kg/m<sup>3</sup> |
| B. | 5846 kg/m<sup>3</sup> |
| C. | 8768 kg/m<sup>3</sup> |
| D. | 1750 kg/m<sup>3</sup> |
| Answer» C. 8768 kg/m<sup>3</sup> | |
| 2. |
What is each point (position of particle) in a crystal lattice termed as? |
| A. | Lattice index |
| B. | Lattice point |
| C. | Lattice lines |
| D. | Lattice spot |
| Answer» B. Lattice point | |
| 3. |
How many parameters are used to characterize a unit cell? |
| A. | Six |
| B. | Three |
| C. | Two |
| D. | Nine |
| Answer» B. Three | |
| 4. |
What is the radius of a metal atom if it crystallizes with body-centered lattice having a unit cell edge of 333 Pico meter? |
| A. | 1538.06 pm |
| B. | 769.03 pm |
| C. | 288.38 pm |
| D. | 144.19 pm |
| Answer» E. | |
| 5. |
If the aluminum unit cell exhibits face-centered behavior then how many unit cells are present in 54g of aluminum? |
| A. | 1.2042 x 10<sup>24</sup> |
| B. | 5.575 x 10<sup>21</sup> |
| C. | 3.011 x 10<sup>23</sup> |
| D. | 2.4088 x 10<sup>24</sup> |
| Answer» D. 2.4088 x 10<sup>24</sup> | |
| 6. |
What is the total volume of the particles present in a body centered unit cell? |
| A. | 8 r<sup>3</sup> |
| B. | ( frac{8}{3} ) r<sup>3</sup> |
| C. | ( frac{16}{3} ) r<sup>3</sup> |
| D. | ( frac{32}{3} ) r<sup>3</sup> |
| Answer» C. ( frac{16}{3} ) r<sup>3</sup> | |
| 7. |
Atoms of element X form a BCC and atoms of element Y occupy 3/4th of the tetrahedral voids. What is the formula of the compound? |
| A. | X<sub>2</sub>Y<sub>3</sub> |
| B. | X<sub>3</sub>Y<sub>2</sub> |
| C. | X<sub>3</sub>Y<sub>4</sub> |
| D. | X<sub>4</sub>Y<sub>3</sub> |
| Answer» B. X<sub>3</sub>Y<sub>2</sub> | |
| 8. |
A compound is formed by atoms of elements A occupying the corners of the unit cell and an atom of element B present at the center of the unit cell. Deduce the formula of the compound. |
| A. | AB<sub>2</sub> |
| B. | AB<sub>3</sub> |
| C. | AB<sub>4</sub> |
| D. | AB |
| Answer» E. | |
| 9. |
Which of the following possess anisotropic nature within their structure? |
| A. | Hair wax |
| B. | Snowflakes |
| C. | Polythene |
| D. | Crystal glass |
| Answer» C. Polythene | |
| 10. |
If a crystal lattice has 6 closed-pack spheres, what the number of tetrahedral voids in the lattice? |
| A. | 12 |
| B. | 6 |
| C. | 36 |
| D. | 3 |
| Answer» B. 6 | |
| 11. |
Which of the following arrangements of particles does a simple cubic lattice follow? |
| A. | ABAB |
| B. | AABB |
| C. | ABCABC |
| D. | AAA |
| Answer» E. | |
| 12. |
What is the coordination number of a body-centered unit cell? |
| A. | 6 |
| B. | 12 |
| C. | 8 |
| D. | 4 |
| Answer» D. 4 | |
| 13. |
Which of the following unit cells has constituent particles occupying the corner positions only? |
| A. | Body-centered cell |
| B. | Primitive cell |
| C. | Face centered cell |
| D. | End-centered cell |
| Answer» C. Face centered cell | |
| 14. |
Which of the following is regarded as the repeatable entity of a 3D crystal structure? |
| A. | Unit cell |
| B. | Lattice |
| C. | Crystal |
| D. | Bravais Index |
| Answer» B. Lattice | |