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 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a limitation of solid-state storage in terms of reliability? A) Unlimited read and write cycles. B) Limited number of read and write cycles. C) High energy consumption. D) Slow data access. Show Answer Correct Answer: B) Limited number of read and write cycles. 2. Within the layers, the carbon atoms are arranged in graphite are A) Hexagons. B) Pentagons. C) All the above. D) None of the above. Show Answer Correct Answer: A) Hexagons. 3. The following methods are adopted for discarding wastes: A) Landfill. B) Incineration. C) Composting. D) All the above. Show Answer Correct Answer: D) All the above. 4. N-type semiconductor has the following properties except A) Known as acceptor impurities. B) Doping will contributes free electrons. C) Addition of pentavalent impurities. D) Known as Donor Impurities. Show Answer Correct Answer: A) Known as acceptor impurities. 5. What factors affect the potential barrier in a diode? A) Material thickness. B) Light exposure conditions. C) Voltage drop across the diode. D) Doping concentration, temperature, semiconductor type, and external electric fields. Show Answer Correct Answer: D) Doping concentration, temperature, semiconductor type, and external electric fields. 6. Silicon carbide is an example of A) Covalent solid. B) Molecular solid. C) Metallic solid. D) Ionic solid. Show Answer Correct Answer: A) Covalent solid. 7. Which of the following is not the characteristic of ionic solids? A) Very low value of electrical conductivity in the molten state. B) Very strong forces of interactions. C) Anisotropic nature. D) Brittle nature. Show Answer Correct Answer: A) Very low value of electrical conductivity in the molten state. 8. What is the primary temperature range for Friction Stir Welding (FSW)? A) Below 100$^\circ$C (212$^\circ$F). B) 230$^\circ$C to 260$^\circ$C (450$^\circ$F to 500$^\circ$F). C) Above 1000$^\circ$C (1832$^\circ$F). D) Room temperature. Show Answer Correct Answer: B) 230$^\circ$C to 260$^\circ$C (450$^\circ$F to 500$^\circ$F). 9. If a non metal is added to interstitial site of a metal then metal becomes A) Softer. B) Less tensile. C) Less malleable. D) More ductile. Show Answer Correct Answer: D) More ductile. 10. Name an element with which germanium can be doped to produce an n-type semiconductor A) Boron. B) Gallium. C) Indium. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 11. Total number of atoms per unit cell in BCC A) 2. B) 4. C) All the above. D) None of the above. Show Answer Correct Answer: A) 2. 12. A metal crystallises with a face centred cubic lattice.The edge of the unit cell is 408 pm.The diameter of the metal is: A) 144 pm. B) 408 pm. C) 288 pm. D) 204 pm. Show Answer Correct Answer: C) 288 pm. 13. Proses Resistance Welding (RW) memiliki kekurangan yaitu, membutuhkan elektroda habis pakai, gas pelindung, atau fluks. A) Benar. B) Salah. C) All the above. D) None of the above. Show Answer Correct Answer: B) Salah. 14. What is 50 $^\circ$C in Kelvin? A) 50. B) 323. C) 100. D) 223. Show Answer Correct Answer: B) 323. 15. The power and control circuit is simple and inexpensive in A) Power modulator. B) AC drives. C) DC drives. D) Mechanical Load. Show Answer Correct Answer: C) DC drives. 16. Consider the following statements .1-If an Fe2 + is missing from its lattice site in FeO then there must be two Fe + ions somewhere in the lattice to balance the electrical charges2-Crystals with metal deficiency defects are called super-conductors3-Crystals with metal deficiency defects are called semiconductors Select the correct alternate . A) 1 and 2. B) 1 and 3. C) Only 2. D) Only 1. Show Answer Correct Answer: D) Only 1. 17. During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is A) 330 minutes. B) 110 minutes. C) 220 minutes. D) 55 minutes. Show Answer Correct Answer: B) 110 minutes. 18. How does the Drude model describe electrical conductivity? A) As a function of electron density and relaxation time. B) As a constant value for all materials. C) As dependent only on temperature. D) None of the above. Show Answer Correct Answer: A) As a function of electron density and relaxation time. 19. Transition element Show defect A) Frenkel Defect. B) Metal deficiency Defect. C) Metal excess Defect. D) Schottky Defect. Show Answer Correct Answer: B) Metal deficiency Defect. 20. Crystalline solid is converted into amorphous by A) Heating. B) Cooling. C) Slow heating and slow cooling. D) Heating and rapid cooling. Show Answer Correct Answer: D) Heating and rapid cooling. 21. The packing efficiency of a metal crystal for a simple cubic lattice is: A) 65%. B) 54.5%. C) 52.4%. D) 60%. Show Answer Correct Answer: C) 52.4%. 22. What is the number of particles per unit cell in case of a body centred cubic unit cell. A) 3. B) 2. C) 4. D) 1. Show Answer Correct Answer: B) 2. 23. Which of the following shows both frenkel and schottky defect A) KCl. B) NaCl. C) AgCl. D) AgBr. Show Answer Correct Answer: D) AgBr. 24. Which of the following is an amorphous solid? A) Graphite (C). B) Chrome alum. C) Quartz glass (SiO$_{2}$). D) Silicon carbide (SiC). Show Answer Correct Answer: C) Quartz glass (SiO$_{2}$). 25. TYPE-II CALCULATION OF EDGE/INTERIONIC DISTANCE/RADIUS FROM DENSITYQ. The compound CuCl has Zns(cubic) structure. Its density is 3.4 g cm$^{-3}$. What is the length of the edge of the unit cell? (Atomic masses Cu=63.5, Cl=35.5). A) 178pm. B) 478pm. C) 578pm. D) 278pm. Show Answer Correct Answer: C) 578pm. 26. In an ionic bond, the bond is formed due to ..... A) Transfer of electrons. B) Sharing of electrons. C) Dipole-dipole interaction. D) Overlap of atomic orbitals. Show Answer Correct Answer: A) Transfer of electrons. 27. When electrons are trapped in the crystal in the anionic vacancy, the defect is known as A) Stoichiometric defect. B) Schottky defect. C) Frenkel defect. D) F-centre. Show Answer Correct Answer: D) F-centre. 28. In Metal the difference of energy between valence band and conduction band A) Is negligible. B) Is small. C) Is large. D) None of the above. Show Answer Correct Answer: A) Is negligible. 29. In NaCl structure, Na+ ions occupies: A) All octahedral and tetrahedral sites are occupied. B) Only octahedral sites are occupied. C) Only tetrahedral sites are occupied. D) Neither octahedral nor tetrahedral sites are occupied. Show Answer Correct Answer: B) Only octahedral sites are occupied. 30. A face centred cubic element atomic mass 60 has a Cell edge of 400 pm. What is its density? A) 24.8g/cm. B) 3.1g/cm. C) 6.2g/cm. D) 12.4g/cm. Show Answer Correct Answer: C) 6.2g/cm. 31. How many tetrahedral voids are present in cubic close packed crystal structure? A) 4. B) 12. C) 6. D) 8. Show Answer Correct Answer: D) 8. 32. For the following electrochemical cell at 298 K, Pt$_{(s)}$ | H$_{2(g, 1 bar) }$| H$^{+}$$_{(aq, 1M)}$|| M$^{4+}$$_{(aq}$), M$^{2+}$$_{(aq)}$ | Pt$_{(s)}$E$_{cell}$ = 0.092 V when =10$^{x}$. Given:E$^{O}$$_{M}$$^{4+}$$_{(aq)/ M}$$^{2+}$ = 0.151 V; 2.303 = 0.0591V The value of x is A) 2. B) -2. C) 1. D) -1. Show Answer Correct Answer: A) 2. 33. Which type of drive system is used in travelling cranes? A) Group Drive. B) Individual Drive. C) Multimotor drive. D) DC drive. Show Answer Correct Answer: C) Multimotor drive. 34. The coordination number of two dimensional HCP = ..... A) 2. B) 6. C) 4. D) 12. Show Answer Correct Answer: B) 6. 35. Percentage of free space in bcc lattice is: A) 52. B) 24. C) 48. D) 32. Show Answer Correct Answer: D) 32. 36. A few substances like iron, cobalt, nickel, gadolinium and CrO2 are attracted very strongly by a magnetic field. Such substances are called A) Dimagnetic. B) Ferromagnetic. C) Paramagnetic. D) None of the above. Show Answer Correct Answer: B) Ferromagnetic. 37. The Crystal having highest melting point is A) Ionic Crystal. B) Covalent Crystal. C) Molecular crystal. D) Metallic Crystal. Show Answer Correct Answer: B) Covalent Crystal. 38. Which. of the following material is amorphous A) Rubber. B) Glass. C) Mica. D) Lead. Show Answer Correct Answer: B) Glass. 39. The gravitational force between two masses is A) Zero. B) Attractive. C) Infinity. D) Repulsive. Show Answer Correct Answer: C) Infinity. 40. The appearance of colour in solid alkali metal halide is generally due to: A) Schottky defect. B) Vacancy defect. C) Frenkel defect. D) F-Centres. Show Answer Correct Answer: D) F-Centres. 41. Population inversion for Lasing action means A) More electrons in metastable state than ground state. B) More electrons in any excited state than ground state. C) More electrons in 1st excited than ground state. D) More electrons in ground state than excited state. Show Answer Correct Answer: A) More electrons in metastable state than ground state. 42. Silver forms ccp lattice and X-ray studies of its crystal show that the edge length of its unit cell is 408.6pm. Calculate the density of silver (Atomic mass = 107.9u). A) 12.4 g/cm$^{3}$. B) 10.9 g/cm$^{3}$. C) 10.5 g/cm$^{3}$. D) 9.7 g/cm$^{3}$. Show Answer Correct Answer: C) 10.5 g/cm$^{3}$. 43. What is the difference between classical and quantum models of electron behavior? A) Classical models use Maxwell-Boltzmann statistics, while quantum models use Fermi-Dirac statistics. B) Quantum models predict higher heat capacities than classical models. C) Both models are identical in their predictions. D) None of the above. Show Answer Correct Answer: A) Classical models use Maxwell-Boltzmann statistics, while quantum models use Fermi-Dirac statistics. 44. What is the coordination number of a HCP structure A) 6. B) 12. C) 8. D) 14. Show Answer Correct Answer: B) 12. 45. What type of stoichiomatric defect shown by nacl A) Schottky defect. B) Vacant. C) Frenkal defect. D) Metal excess defect. Show Answer Correct Answer: A) Schottky defect. 46. Density of Li atom is 0.53 g/cm$^{3}$. The edge length of Li is 35pm. Find out the number of Li atoms in a unit cell (N$_{A}$= 6.023 x 10$^{23}$, M= 6.94 g/mol). A) 2. B) 8. C) 1. D) 4. Show Answer Correct Answer: A) 2. 47. When 50 mL of ethanol and 50 mL of water are mixed, predict whether the volume of the solution is A) Equal to100 mL. B) Greater than 100 mL. C) Less than 100 mL. D) All of the above. Show Answer Correct Answer: B) Greater than 100 mL. 48. Which of following is diamagnetic substance? A) MnO. B) NaCl. C) Cu$^{2+}$. D) CO. Show Answer Correct Answer: B) NaCl. 49. If 'R' is the radius of the spheres in the close packed arrangement, then radius of the tetrahedral void is ..... ? A) 0.425 R. B) 0.225 R. C) 0.414 R. D) 0.214 R. Show Answer Correct Answer: B) 0.225 R. 50. What type os stoichiomatric defect is shown by Agl A) Schottky. B) Frenkal. C) All the above. D) None of the above. Show Answer Correct Answer: A) Schottky. 51. What is the role of doping in semiconductor physics? A) Doping enhances the optical properties of semiconductors by reflecting light. B) Doping increases the conductivity of semiconductors by adding charge carriers. C) Doping decreases the conductivity of semiconductors by removing charge carriers. D) Doping stabilizes the temperature of semiconductors by insulating them. Show Answer Correct Answer: B) Doping increases the conductivity of semiconductors by adding charge carriers. 52. The arrangement ABCABC ..... is referred to as ..... close packing. A) Cubic. B) Hexagonal. C) Octahedral. D) Tetrahedral. Show Answer Correct Answer: A) Cubic. 53. Weakest force of attraction found in which bond:- A) Ionic. B) Covalent. C) Metallic. D) Van der waal. Show Answer Correct Answer: D) Van der waal. 54. Addition of non volatile solute to a volatile solvent A) Contributes to vapour pressure. B) Lowers the vapour pressure. C) No effect on vapour pressure. D) Increases the vapour pressure. Show Answer Correct Answer: B) Lowers the vapour pressure. 55. A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because A) All the domains get oriented in the direction of magnetic field. B) All the domains are get oriented in the direction opposite to the magnetic field. C) Domains get oriented randomly. D) Domains are not affected by magnetic field. Show Answer Correct Answer: A) All the domains get oriented in the direction of magnetic field. 56. Which equation represents the change in Gibbs free energy for a process at constant temperature and pressure? A) DG = VdP-SdT. B) DG = dH-TdS. C) DG = dU + TdS. D) DG = dU + PdV. Show Answer Correct Answer: A) DG = VdP-SdT. 57. KBr has fcc structure. The density of KBr is 2.75 g cm$^{3-}$ . Find the distance between K$^{+}$ and Br$^{-}$. (At. mass of Br=80.0) A) 230pm. B) 430pm. C) 430pm. D) 330pm. Show Answer Correct Answer: D) 330pm. 58. One cube has ..... unit cell A) 6. B) 4. C) 8. D) 2. Show Answer Correct Answer: C) 8. 59. Imagine you've been using a solid-state drive (SSD) in your computer for several years. Which characteristic refers to the SSD's ability to maintain its performance over this time period? A) Capacity. B) Cost. C) Capacity. D) Reliability. E) Portability. Show Answer Correct Answer: D) Reliability. 60. Which of the following motor is preferred for blowers? A) DC series motor. B) Wound rotor induction motor. C) Squirrel cage induction motor. D) DC shunt motor. Show Answer Correct Answer: C) Squirrel cage induction motor. ← 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 2Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books