Density Packing Fraction
High-Yield Trend
Questions 11 MCQs
The fraction of total volume occupied by the atoms present in a simple cube is:
1.
2.
3.
4.
If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius in fcc crystal is:
1. 1.81 Å
2. 2.10 Å
3. 2.92 Å
4. 1.27 Å
| 1. | The fraction of the total volume occupied by die atoms in a primitive cell is 0.48 |
| 2. | Molecular solids are generally volatile |
| 3. | The number of carbon atoms in a unit cell of a diamond is 8 |
| 4. | The number of Bravais lattices in which a crystal can be categorized is 14 |
1. 30%
2. 32%
3. 34%
4. 28%
AB crystallizes in a body-centered cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositely charged ions in the lattice is:
1. 335 pm
2. 250 pm
3. 200 pm
4. 300 pm
A metal crystallizes with a fcc lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is:
1. 288 pm
2. 408 pm
3. 144 pm
4. 204 pm
2. 27 g mol–1
3. 20 g mol–1
4. 40 g mol–1
Iron exhibits bcc structure at room temperature. Above 900 °C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900 °C is:
(Molar mass and atomic radii of iron remain constant with temperature)
1.
2.
3.
4.
1. 65 u
2. 63.1 u
3. 31.55 u
4. 60 u
1. 2
2. 5
3. 4
4. 3
Preparing Density Packing Fraction for NEET
Density Packing Fraction is a specific sub-topic that frequently appears in the NEET examination. Understanding the underlying principles and practicing targeted questions is key to mastering this concept.
The questions compiled above are previous year questions (PYQs) directly related to Density Packing Fraction. Practicing these specific questions helps you understand the difficulty level and the examiner's approach to this topic.
Topic Frequently Asked Questions
Is Density Packing Fraction a high-weightage topic?
You can refer to the priority and consistency badges at the top of this page. High priority topics should be thoroughly revised multiple times before the exam.
Should I memorize the solutions?
No, it is highly recommended to understand the core concept and methodology behind each solution rather than memorizing them, as exact questions are rarely repeated, but the concepts definitely are.