Question

1-Which is amorphous solid?.....................
Graphite/Quartz Glass(SiO2)/Chrome alum/Carborundum(SiC)
2-Sharp mp of cystalline solid is due to.................
Regular arrangement of CP over short distance/Long distance/Same arrangement of CP/Different arrangement of CP
3-Iodine Molecules are held in Crystal lattice by
London forces/dipole-dipole interaction/covalent bonds/Coulombic forces.
4-Which has a network of solid?......................
Solid SO2/Iodine Crystal/Diamond/Ice
5-If Cations are present in the interstitial sites,the defect will be............
Frenkel/Schottky/Vacancy/Metaldeficiency
6-Total number of tetra hedral voids in fcc will be....6/8/10/12
7-% of empty space in BCC will be ..........
74/68/32/26
8-Silicon doped with e-rich impurity form.........
p type/n type/intrinsic semiconductor/Insulator.
9-Which defect decreases density...........
Interstitial/Vacancy/Frenkel/Schootky
10-A Ferromagnetic substance becomes a permanent magnet if placed in magnetic field.It is due to............
All domains get oriented in direction of magnetic field/in opposite field/oriented randomly/not affected by magnetic field.​

Answer 1

Answer:

1. Quartz Glass (SiO2)

2. Regular arrangement of CP over long distance

3. London Forces

4. Diamond

5. Frenkel defect

6. 8

7. 32%

8. n-type

9. Schottky

10. All domains get oriented in direction of magnetic field

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