Atoms or ions missing from the normal lattice point creating a vacancy is due to
Options
(a) Frenkel defect (b) Schottky defect (c) Mass defect (d) Interstitial defect
Correct Answer:
Schottky defect
Explanation: […]
Schottky defect defines imperfection in the lattice structure of a
Options
(a) solid (b) gas (c) liquid (d) plasma
Correct Answer:
solid
Explanation:
Schottky defect: If some of the lattice points are unoccupied, […]
A solid compound XY has NaCl structure . If the radius of the cation is 100 pm, the radius of the anion (Y⁻) will be
Options
(a) 275.1 pm (b) 322.5 pm (c) […]
Which of the following is not a ferromagnetic substance
Options
(a) Cobalt (b) Nickel (c) Manganese (d) Iron
Correct Answer:
Manganese
Explanation:
Fe, Co, Ni are ferromagnetic subtances since they show permanent magnetism […]
AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is
Options
(a) 335 pm (b) 250 […]
Antiferomagnetic substances possess
Options
(a) low magnetic moment (b) large magnetic moment (c) zero magnetic moment (d) any value of magnetic moment
Correct Answer:
zero magnetic moment
Explanation:
No explanation available. Be the […]
The crystal structure of solid Mn(II) oxide is
Options
(a) NaCl structure (b) Fe₂O₃ structure (c) CaF₂ structure (d) Na₂O structure
Correct Answer:
NaCl structure
Explanation:
No explanation available. Be the first to […]
The pyknometric density of sodium chloride crystal is 2.165 x 10³ kg m⁻³, while its X-rays density is 2.178 x 10³ kg m⁻³. The fraction of unoccupied sites in sodium chloride crystal is
Options […]
In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells
Options
(a) 2 (b) 4 (c) 6 (d) 8
Correct Answer:
6
Explanation:
No explanation available. Be […]
Which of the following is ferroelectric compound
Options
(a) Pb₂O₃ (b) BaTiO₃ (c) PbZrO₃ (d) K₄[Fe(CN₆)]
Correct Answer:
BaTiO₃
Explanation:
No explanation available. Be the first to write the explanation for this question […]
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