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Solid State - 01
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Q1. A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is -
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1 point
204 pm
144 pm
288 pm
408 pm
Q2. AB crystallizes in a body centred cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is -
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1 point
355 pm
375 pm
175 pm
200 pm
Q3. Percentage of free space in a body centred cubic unit cell is -
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1 point
25 %
74 %
68 %
32 %
Q4. The appearance of colour in solid alkali metal halides is generally due to -
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1 point
Schottky Defect
Interstitial Positions
F - Centers
Frenkel Defect
Q5. A compound formed by elements X and Y crystallizes in a cubic structure in which atoms X are at the corners of the cube and atoms Y are at the face-centers. The formula of the compound is -
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1 point
XY
XY3
X3Y
X2Y3
Q6. In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3 rd of tetrahedral voids. The formula of the compound will be -
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1 point
XY2
XY
X4Y3
X3Y2
Q7. Which of the following conditions favours the existence of a substance in the solid state?
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1 point
High temperature
High thermal energy
Low temperature
Weak cohesive forces
Q8. Which of the following is an amorphous solid?
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1 point
Chrome alum
Graphite (C)
Silicon carbide (SiC)
Quartz glass (SiO2)
Q9. Which of the following arrangements shows schematic alignment of magnetic moments of antiferromagnetic substances?
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1 point
(iv)
(iii)
(i)
(ii)
Q10. Which of the following statement is not true about amorphous solids?
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1 point
Amorphous solids can be moulded by heating.
On heating they may become crystalline at certain temperature.
They are anisotropic in nature.
They may become crystalline on keeping for long time.
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