This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part I > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Is a type of removable memory card designed for use in digital camera. A) SD. B) XD. C) CFast. D) None of the above. Show Answer Correct Answer: B) XD. 2. Which of the following motors is preferred when smooth and precise speed control over a wide range is desired? A) Wound rotor induction motor. B) Squirrel cage induction motor. C) D.C. motor. D) Synchronous motor. Show Answer Correct Answer: C) D.C. motor. 3. SiO4 (quartz) is A) Crystalline. B) Amorphous. C) Both. D) None of the above. Show Answer Correct Answer: A) Crystalline. 4. Assertion:Crystalline solids have short range order. Reason:Amorphous solids have long range order. A) B. B) A. C) C. D) D. Show Answer Correct Answer: D) D. 5. Is NOT a crystal system A) Rotorombic. B) Monoclinic. C) Hexagonal. D) Cubic. Show Answer Correct Answer: A) Rotorombic. 6. A regular three dimensional arrangements of points in space is called A) Unit cell. B) Lattice point. C) Crystal lattice. D) None of the above. Show Answer Correct Answer: C) Crystal lattice. 7. Einstein's theory of specific heat of solids assumes that the atoms of a solid vibrate simple harmonically ..... A) Like longitudinal waves. B) Like transverse waves. C) All with the same frequency. D) In a complex manner. Show Answer Correct Answer: C) All with the same frequency. 8. How many bravais lattices for Hexagonal A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: A) 1. 9. What is contribution of a lattice point present at the body centre towards a unit cell A) 100%. B) 0. C) 25%. D) 50%. Show Answer Correct Answer: A) 100%. 10. Select the correct statement ( s ) A) The non-stoichiometric form of NaCl is yellow and that of KCl is blue-lilac. B) Solids containing F-centers ( Farbe ) are paramagnetic. C) Conduction by electrons IS called n-type semi conduction. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. The edge length of fee cell is 508 pm. If radius of cation is 110 pm, the radius of anion is A) 220 pm. B) 110 pm. C) 144 pm. D) 285 pm. Show Answer Correct Answer: C) 144 pm. 12. 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: A) 408 pm. B) 144 pm. C) 200 pm. D) 288 pm. Show Answer Correct Answer: D) 288 pm. 13. ZnO is white when cold and yellow when heated. It is due to the development of A) Metal deficiency defect. B) Frenkel defect. C) Schottky defect. D) Metal excess defect. Show Answer Correct Answer: D) Metal excess defect. 14. An ion leaves its regular site to occupy a position in space between lattice sites is A) Frenkel defects. B) Impurity defect. C) Schottky defect. D) Vacancy defect. Show Answer Correct Answer: A) Frenkel defects. 15. Na and Mg crystallize in BCC and FCC type crystals respectively, then the number of atoms of Na and Mg present in the unit cell of their respective crystal is A) 9 & 14. B) 14 & 9. C) 2 & 4. D) 4 & 2. Show Answer Correct Answer: C) 2 & 4. 16. Silicon doped with electron-rich impurity forms ..... A) Intrinsic semiconductor. B) N-type semiconductor. C) P-type semiconductor. D) Insulator. Show Answer Correct Answer: B) N-type semiconductor. 17. The most unsymmetrical crystal system is A) Cubic. B) Orthorombic. C) Hexagonal. D) Triclinic. Show Answer Correct Answer: D) Triclinic. 18. What is the better choice of motor drive is suitable for lift application? A) DC Shunt motor. B) Differential compound motor. C) DC Series motor. D) DC Compound motor. Show Answer Correct Answer: C) DC Series motor. 19. Which statement is not true about Frenkel Defect? A) It is observed in compounds having low coordination number. B) It is usually favoured by a large difference in the sizes of cation and anion. C) It decreases the density of the crystal lattice. D) It is a stoichiometric point defect observed in ionic solids. Show Answer Correct Answer: C) It decreases the density of the crystal lattice. 20. Assertion:Graphite is a soft solid and a good solid lubricant.Reason:Different layers in graphite can slide one over the other. A) Assertion and reason both are correct statements and reason is correct explanation for assertion. B) Assertion and reason both are correct statements but reason is not correct explanation for assertion. C) Assertion is correct statement but reason is wrong statement. D) Assertion is wrong statement but reason is correct statement. Show Answer Correct Answer: A) Assertion and reason both are correct statements and reason is correct explanation for assertion. 21. In which of the following defects equal number of anions and cations are missing from lattice site? A) Vacancy defect. B) Schottky defect. C) Interstitial defect. D) Frenkel Defect. Show Answer Correct Answer: B) Schottky defect. 22. The coordination number in NaCl (simple), ZnS (fcc) and CsCl (bcc) is 6, 12 and 8 respectively. The ionic compounds which will be exhibiting Schottky Defect will be A) NaCl, ZnS. B) ZnS, CsCl. C) NaCl, CsCl. D) All will exhibit. Show Answer Correct Answer: C) NaCl, CsCl. 23. The coordination number of a metal crystallizing in a hexagonal close packing (hcp) structure is A) 08. B) 12. C) 07. D) 06. Show Answer Correct Answer: B) 12. 24. Which of the following is NOT a characteristic of Solid-State Storage? A) Low cost. B) Silent operation. C) Speed. D) Durability. Show Answer Correct Answer: A) Low cost. 25. Electrical conductivity in semiconductor is due to A) Ions. B) Electrons. C) Impurity. D) None of the above. Show Answer Correct Answer: C) Impurity. 26. FeO is an example of ..... A) Frenkel defect. B) Schottky defect. C) Metal excess defect. D) Metal deficiency defect. Show Answer Correct Answer: D) Metal deficiency defect. 27. Materials which lack permanent magnetic dipoles are called ..... A) Semi-magnetic. B) Paramagnetic. C) Diamagnetic. D) Ferromagnetic. Show Answer Correct Answer: C) Diamagnetic. 28. Crystalline solids are A) Anisotropic. B) Isotropic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anisotropic. 29. Define the term 'band gap' in solid state physics. A) The band gap is the temperature at which a solid becomes a liquid. B) The band gap is the total energy of a solid's atomic structure. C) The band gap is the maximum energy level of electrons in a solid. D) The band gap is the energy difference between the valence band and conduction band in a solid. Show Answer Correct Answer: D) The band gap is the energy difference between the valence band and conduction band in a solid. 30. According to Drude A) The valence electrons of atoms move freely like gas molecules in a solid. B) The valence electrons of atoms move under coulomb field of atoms but they themselves do not apply any force on each other and like gas molecules in a solid. C) The valence electrons of atoms move under coulomb field of atoms. D) All electrons move freely in side solid. Show Answer Correct Answer: A) The valence electrons of atoms move freely like gas molecules in a solid. 31. An ionic compound AB$_{2}$ possesses CaF$_{2}$, type of crystal structure. Write the coordination numbers of A$^{2+}$ and B$^{-}$ ions in crystals of AB$_{2}$. A) N. of A$^{2+}$ = 8; C. N. of B$^{-}$=4. B) N. of A$^{2+}$ = 2; C. N. of B$^{-}$=4. C) N. of A$^{2+}$ = 4; C. N. of B$^{-}$=4. D) N. of A$^{2+}$ = 4; C. N. of B$^{-}$=8. Show Answer Correct Answer: A) N. of A$^{2+}$ = 8; C. N. of B$^{-}$=4. 32. At 0K, all the valence electrons in an intrinsic semiconductor A) Are in the valence band. B) Are in the forbidden gap. C) Are in the conduction band. D) Are free electrons. Show Answer Correct Answer: A) Are in the valence band. 33. Gold crystallizes in a face-centered cubic lattice. If the length of the edge of the unit cell is 407 pm, calculate the density of gold as well as its atomic radius assuming it to be spherical. Atomic mass of gold=197amu. A) 18gm/cm$^{3}$, 160pm. B) 25gm/cm$^{3}$, 149pm. C) 21gm/cm$^{3}$, 150.1pm. D) 19.4gm/cm$^{3}$, 143.9pm. Show Answer Correct Answer: D) 19.4gm/cm$^{3}$, 143.9pm. 34. A compound is formed by elements X and Y. This crystallizes in the cubic structure when atoms X are the corners of the cube and atoms Y are the centre of the body. The simplest formula of the compound is: A) XY$_{4}$. B) X$_{2}$Y. C) XY. D) XY$_{2}$. Show Answer Correct Answer: C) XY. 35. Anionic sites occupied by unpaired electrons are called A) Interstitial Centres. B) F Centres. C) Anionic Centres. D) Cationic Centres. Show Answer Correct Answer: B) F Centres. 36. In a zero-order reaction for every 10$^\circ$ rise of temperature, the rate is doubled. If the temperature is increased from 10$^\circ$C to 100$^\circ$C, the rate of the reaction will become: A) 128 times. B) 512 times. C) 64 times. D) 256 times. Show Answer Correct Answer: B) 512 times. 37. How many type of bravais lattices are there A) 14. B) 7. C) 10. D) 4. Show Answer Correct Answer: A) 14. 38. Which of the following describes the atomic packing factor (APF) for face-centered cubic (FCC) structures? A) 0.80. B) 0.68. C) 0.74. D) 0.52. Show Answer Correct Answer: C) 0.74. 39. Materials which can conduct electricity better than insulator, but not as well as conductors represent ..... A) Diode. B) Superconductor. C) Graphite. D) Semiconductor. Show Answer Correct Answer: D) Semiconductor. 40. The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have co-ordination number 8. The crystal class is: A) Simple cube. B) Body centred cube. C) Face centred cube. D) None. Show Answer Correct Answer: B) Body centred cube. 41. The total number of voids per atom in 0.5 mole of compound forming hexagonal closed packed structure A) 2 mole. B) 3 mole. C) 1 mole. D) 1.5 mole. Show Answer Correct Answer: D) 1.5 mole. 42. Find whether the bonds are ionic or covalent-Zn-Cl A) Ionic. B) Covalent. C) None. D) None of the above. Show Answer Correct Answer: A) Ionic. 43. The coordination number of atoms in bcc crystal lattice is A) 2. B) 8. C) 4. D) 6. Show Answer Correct Answer: B) 8. 44. Choose the correct one. (* stands for multiplication, J represents the moment of inertia, w represents angular speed). A) J*d(w)/dt = motor torque-load torque. B) J*d(w)/dt = load torque-motor torque. C) J*d(w)/dt = load torque * motor torque. D) J*d(w)/dt = load torque + motor torque. Show Answer Correct Answer: A) J*d(w)/dt = motor torque-load torque. 45. When NaCl crystal is doped with MgCl $_{2 }$, the nature of defect produced is A) Schottky defect. B) Frenkel defect. C) Impurity defect. D) None of the above. Show Answer Correct Answer: C) Impurity defect. 46. Relation between edge length and radius of sphere in simple cubic lattice is A) A=4r. B) A=2r. C) No relationship. D) None of the above. Show Answer Correct Answer: B) A=2r. 47. KF has ccp structure. Calculate the radius of the unit cell if the side of the cube or edge length is 400 pm. How many Fions and octahedral voids are there in the unit cell? A) 1.41 pm. B) 14.14 pm. C) 140 pm. D) 141.4 pm. Show Answer Correct Answer: D) 141.4 pm. 48. Known for their ability to be flattened into a sheet, stretched into a wire, and to conduct energy well.The above statement describe for A) Molecular solid. B) Network solid. C) Metallic solid. D) Ionic solid. Show Answer Correct Answer: C) Metallic solid. 49. Structure of a mixed oxide is cubic close-packed (c.c.p). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is A) AB$_{2}$O$_{2}$. B) A$_{2}$B3O$_{4}$. C) A$_{2}$BO$_{2}$. D) ABO$_{2}$. Show Answer Correct Answer: A) AB$_{2}$O$_{2}$. 50. Percentage of free space in BCC unit cell is A) 30%. B) 34%. C) 32%. D) 28%. Show Answer Correct Answer: C) 32%. 51. A material's electrical conductivity is determined by its ..... A) Color. B) Energy band structure. C) Phonon density. D) Grain size. Show Answer Correct Answer: B) Energy band structure. 52. Na2O is ..... type of crystal A) Antifluorite. B) BCC. C) Rutile. D) Fluorite. Show Answer Correct Answer: A) Antifluorite. 53. What is the capacity limit mentioned for solid-state storage? A) Up to 4TB. B) Up to 1TB. C) Up to 8TB. D) Up to 2TB. Show Answer Correct Answer: A) Up to 4TB. 54. What is a disadvantage of Solid-State Storage? A) Generally more expensive per GB. B) Uses less power. C) More resistant to physical damage. D) Faster data access. Show Answer Correct Answer: A) Generally more expensive per GB. 55. The formation of gas at the surface of tungsten due to adsorption is the reaction of order A) 1. B) Insufficient Data. C) 0. D) 2. Show Answer Correct Answer: C) 0. 56. Hexagonal close packed arrangement of ions is described as ..... A) ABABA . B) ABCABA . C) ABBAB. D) ABCABC . Show Answer Correct Answer: A) ABABA . 57. What are the terminal characteristics of PN diodes? A) The terminal characteristics of PN diodes include forward bias conduction, reverse bias blocking, forward voltage drop, reverse saturation current, and breakdown voltage. B) High current gain in reverse bias. C) Infinite resistance in forward bias. D) Zero voltage drop in forward bias. Show Answer Correct Answer: A) The terminal characteristics of PN diodes include forward bias conduction, reverse bias blocking, forward voltage drop, reverse saturation current, and breakdown voltage. 58. In a simple cubic, body-centred cubic and face-centred cubic structure, the ratio of the number of atoms present is respectively A) 2:5:8. B) 1:6:7. C) 1:2:4. D) 1:2:5. Show Answer Correct Answer: C) 1:2:4. 59. How many unit cells are divided equally in a face-centred cubic lattice? A) 6. B) 8. C) 4. D) 2. Show Answer Correct Answer: A) 6. 60. Which one of the following statements about packing in solids is incorrect? A) Void space is ccp mode of packing is 26%. B) Void space in hcp mode of packing is 32%. C) Coordination number in bcc mode of packing is 8. D) Coordination number in hcp mode of packing is 12. Show Answer Correct Answer: B) Void space in hcp mode of packing is 32%. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part I) Chapter 1 Solid State Quiz 1Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 3Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 4Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 5Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 6Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 7Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 8Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books