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Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 19 (60 MCQs)

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1. In a ccp (close packed structure) of mixed oxides, it is found that lattice has O$^{2-}$ (oxide ions), and one-half of octahedral voids are occupied by trivalent cations (A$^{3+}$) and one-eighth of tetrahedral voids are occupied by divalent cations (B$^{2+}$). Derive formula of the mixed oxide.
2. Which statement is true about Schottky Defect?
3. A. Ionic solids are hard and brittleB. Covalent solids are good conducters
4. How is a diffractogram (a common way to display output from X-ray diffraction) presented?
5. In Crystalline solids some of their physical properties like electrical resistance or refractive index show different values when measured along different directions in the same crystals. This arises from different arrangement of particles in different directions, this property is called as
6. The coordination number of ions in KCl is
7. A defect where atoms occupy the empty space between existing atoms within a crystal
8. Use the data given below to find the type of cubic lattice to which the crystal of iron belongs:a/pm=286 d/g cm$^{-3}$=7.86
9. An extra atom present in the void between atoms is called "vacancy"
10. RCP undervoltage setpoint drifting ..... (1) ..... is less conservative, the reactor is more likely to exceed ..... (2) ..... limits.
11. Which of the following materials is NOT typically suitable for solid state welding?
12. All of the following are properties of ideal gases except:
13. Crystals show colour due to the presence of:
14. What are the basic logic gate types?
15. Which of the following is a H-bonded molecular crystal?
16. Which of the following is true about the charge acquired by P type semiconductor?
17. Cubic crystal system have ..... planes and ..... axes of symmetry
18. Which compound is added to create an impurity defect in NaCl?
19. For which of the following applications motor has to start with high acceleration?
20. ..... have sharp melting points
21. Which of the following defects decrease the density?
22. How many chloride ions are surrounding sodium ion in sodium chloride crystal?
23. Number of bravais lattice is
24. What is the possible number of different types of lattices (3D)
25. Bidirectional flow of power is occurs in .....
26. A 200.0-cm copper wire and a 201.0-cm platinum wire are both at exactly 0$^\circ$ C. At what temperature will they be of equal length?
27. How can logic gates be combined to create complex circuits?
28. In the crystal of CsCl, the nearest neighbours of each Cs ion are .....
29. A solid is made of two elements X and Z. The atoms Z are in ccp arrangement while atoms X occupy all the tetrahedral sites. What is the formula of the compound?
30. Silver crystallizes in FCC lattice. If edge length of the cell is 40.7 nm and density is 10.5 g cm$^{-3}$, calculate the atomic mass of silver.
31. The number of atoms or molecules contained in one primitive cubic unit cell is ..... ?
32. $\Delta$T$_{f for an aqueous solution is 0.05. The freezing point of this solution will be }$
33. At zero Kelvin, most of the ionic crystals possess
34. ..... method of starting a three phase induction motor needs six terminals
35. Calculate the efficiency of packing in case of metal crystal for simple cubic (with the assumption that atoms are touching each other).
36. Which of the following statement is not true about amorphous solid?
37. What is the Coordination numberof an atom in FCC or CCP structure?
38. Which of the following describes the hexagonal close packed arrangement of spheres?
39. An element has a bcc structure with cell edge of 288pm. The density of the element is 7.2 g/cm$^{3}$. How many atoms are present in 208 g of the element?
40. Thallium chloride (TICl) crystallizes in a cubic lattic whose edge length is found to be 385 pm. If the density of the solid is found to be 7.0 g cm$^{-3}$, predict the type of lattice to which the crystals of TICl belong. (Atomic mass of TI=204, Cl=35.5)
41. How does solid-state storage compare to HDD in terms of durability?
42. The vacant space in bcc latice cell is ..... %
43. Which approach can be employed to produce a high degree of homogeneity in the creation of ZnFe$_{2}$O$_{4}$ spinel?
44. Band theory is explained using
45. Elasticity is the ability of an object to return to its original form when external forces are removed.
46. Which type of lattice is defined by three translation vectors?
47. Close packing is maximum in
48. Which of the following materials is often considered unsuitable for friction welding due to its brittleness?
49. Determine the type of cubic lattices to which the iron crystal belongs if its unit cell has an edge length of 286 pm and the density of iron crystals is 7.86 g cm$^{-3}$.
50. Which of the following compounds is likely to show both Frankel and Schottky defects in its crystalline form?
51. ..... drive is also called as Line shaft drive
52. Define Schottky defect.
53. NaCl shows Schottky defects and AgCl Frenkel defects. Their electrical conductivity is due to .....
54. In both HCP and CCP the coordination number is
55. The molecules of hydrogen bonded molecular solids contain ..... covalent bonds between H and F, O or N atoms.
56. Generalized coordinates
57. How does a MOSFET differ from a BJT?
58. An aluminum sphere is heated from 11$^\circ$C to 580$^\circ$C. If the volume of the sphere is 1.78 cm$^{3}$ at 11$^\circ$C, what is the increase in the volume of the sphere at 580$^\circ$C?
59. Glasses and plastics are
60. Assertion:Molality of a solution changes with temperature.Reason:Volume of a solution changes with temperature.
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