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Q. No.Schottky defect shows:
| 1. | Same number of cation and anions decrease from lattice. |
| 2. | Cations and anions are replaced from their sites. |
| 3. | Maximum number of cations and anions are same. |
| 4. | None of the above. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe edge length of a face centered unit cubic cell is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is:
1. 144 pm
2. 398 pm
3. 288 pm
4. 618 pm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe second order Bragg diffraction of X-rays with λ = 1.00 Å from a set of parallel planes in a metal occurs at an angle . The distance between the scattering planes in the crystal is:
1. 2.00 Å
2. 1.00 Å
3. 0.57 Å
4. 1.15 Å
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOn the basis of unit cell concept a crystal has:
1. 7 systems
2. 14 systems
3. 230 systems
4. 32 systems
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMgO and NaCl has similar structure. In MgO, magnesium is surrounded by how many oxygen atoms?
1. 2
2. 4
3. 6
4. 1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe cations and anions are arranged in an alternate form in:
1. Metallic crystal
2. Ionic crystal
3. Co-valent crystal
4. Semi-conductor crystal
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA cube of a crystal has an A-atom placed at every corner and B-atom placed at every centre of face. The formula of the compound is:
1. AB
2. AB3
3. A2B2
4. A2B3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn BCC, the distance between the two nearest atoms will be:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyZn converts its melted state to its solid state. It has an HCP structure. The number of the nearest atom is:
1. 6
2. 8
3. 12
4. 4
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of atoms per unit cell in a BCC structure is:
1. 9
2. 4
3. 2
4. 1
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