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 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many spheres or units for BCC (body centr cubic system) A) 5. B) 2. C) 4. D) 1. Show Answer Correct Answer: B) 2. 2. Given an alloy of Cu, Ag and Au in which Cuatoms constitute the CCP arrangement. If thehypothetical formula of the alloy isCu$_{4}$Ag$_{3}$Au . What are the probable locationsof Ag and Au atoms- A) Ag-all Tetrahedral voids; Au-allOctahedral voids. B) Ag-3/8th Tetrahedral voids; Au-1/4thOctahedral voids. C) Ag-1/2 Octahedral voids; Au-1/2Tetrahedral voids. D) Ag-all Octahedral voids; Au-alltetrahedral voids. Show Answer Correct Answer: B) Ag-3/8th Tetrahedral voids; Au-1/4thOctahedral voids. 3. In which industry is solid state welding commonly used for producing aircraft components? A) Automotive. B) Construction. C) Shipbuilding. D) Aerospace. Show Answer Correct Answer: D) Aerospace. 4. It is also called as dislocation defect A) Frenkel defect. B) Schottky defect. C) All the above. D) None of the above. Show Answer Correct Answer: A) Frenkel defect. 5. At ..... a normal conductor become a super conductor. A) Critical temperature. B) Room temperature. C) Normal temperature. D) Curie temperature. Show Answer Correct Answer: A) Critical temperature. 6. To avoid bends diver use oxygen diluted with ..... gas because it is less soluble in blood. A) Nitrogen. B) Helium. C) CO2. D) None of the above. Show Answer Correct Answer: B) Helium. 7. What is the coordination number in a square close packed structure in two dimensions A) 4. B) 6. C) 8. D) 2. Show Answer Correct Answer: A) 4. 8. 10 nm is equal to A) 10$^{-8}$m. B) 10$^{-7}$m. C) 10$^{-10}$m. D) 10$^{-9}$m. Show Answer Correct Answer: A) 10$^{-8}$m. 9. The space lattice of graphite is A) Cubic. B) Rhombic. C) Tetragonal. D) Hexagonal. Show Answer Correct Answer: D) Hexagonal. 10. What is the role of electrons in the conduction band? A) Electrons in the conduction band enable electrical conduction by being free to move and carry charge. B) Electrons in the conduction band are bound to atoms and do not move. C) Electrons in the conduction band absorb energy and become neutral. D) Electrons in the conduction band only exist at absolute zero temperature. Show Answer Correct Answer: A) Electrons in the conduction band enable electrical conduction by being free to move and carry charge. 11. Hexagonal closest-packed structure and a cubic closest expected to have for a given element would be expected to have A) The same coordination number. B) The same packing fraction. C) Both (a) and (b) (. D) None. Show Answer Correct Answer: C) Both (a) and (b) (. 12. BCC lattice has a co-ordination number of: A) 6. B) 12. C) 4. D) 8. Show Answer Correct Answer: D) 8. 13. For a constant temperature, Boyle's law states that A) The pressure of a fixed amount of gas is directly proportional to the volume of the gas. B) The pressure of a fixed amount of gas is inversely proportional to the volume of the gas. C) The pressure of a fixed amount of gas is independent of the volume of the gas. D) None of the above. Show Answer Correct Answer: B) The pressure of a fixed amount of gas is inversely proportional to the volume of the gas. 14. The miller indices of the plane, whose intercepts along the axes are (a, 2b, 3c) is ..... A) (6, 3, 2). B) (1, 2, 3). C) (3, 2, 1). D) (2, 3, 6). Show Answer Correct Answer: A) (6, 3, 2). 15. If we mix a pentavalent impurity in a crystal lattice of germanium, what type of semiconductor formation will occur? A) P-type. B) N-type. C) Both a and b. D) None of two. Show Answer Correct Answer: B) N-type. 16. The smallest repeating unit in a crystal lattice is known as ..... A) Bravais lattice. B) Unit cell. C) Lattice plane. D) Coordination number. Show Answer Correct Answer: B) Unit cell. 17. Silicon doped with arsenic is A) P-type semiconductor. B) N-type semiconductor. C) Like a metallic conductor. D) An insulator. Show Answer Correct Answer: B) N-type semiconductor. 18. The edge length of a face-centered cubic (FCC) unit cell is 400 pm. What is the atomic radius? A) 100 pm. B) 173 pm. C) 282 pm. D) 141 pm. Show Answer Correct Answer: D) 141 pm. 19. What term is used to describe this model of metallic bonding? A) VSEPR. B) Valence Bond Theory. C) Electron sea model. D) Molecular Orbital Theory. Show Answer Correct Answer: C) Electron sea model. 20. If R is the radius of sphere in the close packed arrangement and r is the radius of tetrahedral void, then A) R = 0.414 R. B) R = 0.225 R. C) R =0.225 r. D) R = 0.414 r. Show Answer Correct Answer: B) R = 0.225 R. 21. Defect causing decrease in density A) Schottky. B) Metal Excess. C) F-centre. D) Frenkel. Show Answer Correct Answer: A) Schottky. 22. What role do phonons play in superconductivity? A) They mediate the attractive interaction between electrons. B) They increase electrical resistance. C) They have no effect on superconductivity. D) None of the above. Show Answer Correct Answer: A) They mediate the attractive interaction between electrons. 23. Find the incorrect statement regarding Frenkel defect: A) Density of the crystal significantly decreases due to Frenkel defect. B) Frenkel defects are observed where cations and anions are of comparable size. C) Compounds having low coordination number generally show this type of defect number. D) Both (1) and (2). Show Answer Correct Answer: D) Both (1) and (2). 24. What is the effect of Frenkel defect on the density of ionic solids? A) The density of the crystal increases. B) The density of the crystal decreases. C) The density of the crystal remains unchanged. D) There is no relationship between density of a crystal and defect present in it. Show Answer Correct Answer: C) The density of the crystal remains unchanged. 25. Glass is an example of A) Crystalline solid. B) Amorphous solid. C) Molecular solid. D) Ionic solid. Show Answer Correct Answer: B) Amorphous solid. 26. The type of close packing or unit cell present in NaCl, ZnS, CsCl ionic structures will be A) Simple cubic, fcc, bcc. B) Simple, bcc, fcc. C) Bcc, simple cubic, fcc. D) Fcc, bcc, simple cubic. Show Answer Correct Answer: A) Simple cubic, fcc, bcc. 27. Some of the physical properties of crystalline solid like refractive index show different values on measuring along different directions in the same crystal this property is called A) Isotropy. B) Cleavage property. C) Anisotropy. D) None of these. Show Answer Correct Answer: C) Anisotropy. 28. Which one is not the property of a crystalline solid? A) Isotropic. B) Sharp melting point. C) A definite and regular geometry. D) High intermolecular forces. Show Answer Correct Answer: A) Isotropic. 29. 3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is: A) 36 mg. B) 42 mg. C) 18 mg. D) 54 mg. Show Answer Correct Answer: C) 18 mg. 30. Which of the following is a molecular crystal? A) Quartz. B) Diamond. C) Dry ice. D) Rock salt. Show Answer Correct Answer: C) Dry ice. 31. Number of atoms in FCC A) 0. B) 2. C) 1. D) 4. Show Answer Correct Answer: D) 4. 32. No. of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is. A) 6. B) 4. C) 8. D) 12. Show Answer Correct Answer: C) 8. 33. Empty space in BCC is A) 74%. B) 68%. C) 26%. D) 32%. Show Answer Correct Answer: D) 32%. 34. For the various types of interactions, the CORRECT order of increasing strength is: A) Covalent < hydrogen bonding < van der Waal's < dipole-dipole. B) Dipole-dipole < van der Waal's < hydrogen bonding < covalent. C) Van der Waal's < hydrogen bonding < dipole-dipole < covalent. D) ) van der Waal's < dipole-dipole < hydrogen bonding < covalent. Show Answer Correct Answer: D) ) van der Waal's < dipole-dipole < hydrogen bonding < covalent. 35. An alloy of Cu, Au and Ag is found to have Cu constituting the ccp lattice. If Ag atoms occupy edge centres and Au is present at body centres, the alloy has formula: A) Cu$_{2}$ Ag$_{3}$ Au. B) Cu Ag$_{3}$ Au. C) Cu$_{4}$ Ag$_{2}$ Au. D) Cu$_{4}$ Ag$_{3}$ Au. Show Answer Correct Answer: D) Cu$_{4}$ Ag$_{3}$ Au. 36. Motor used for elevators is generally A) Synchronous motor. B) Induction motor. C) Capacitor start single phase motor. D) Any of the above. Show Answer Correct Answer: B) Induction motor. 37. Coordination Number of Simple Cubic Unit cell and Body centered cell is respectively A) 6, 7. B) 8, 6. C) 6, 8. D) 7, 6. Show Answer Correct Answer: C) 6, 8. 38. Solid A is very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it? A) Metallic solid. B) Ionic solid. C) Covalent solid. D) Molecular solid. Show Answer Correct Answer: C) Covalent solid. 39. ..... is an application of superconductors related to magnetic levitation. A) MRI scanners. B) Maglev trains. C) Electric capacitors. D) Fiber optics. Show Answer Correct Answer: B) Maglev trains. 40. Which of the following lattices has the highest packing efficiency? A) Hexagonal close packed. B) Body centered cubic. C) Simple cubic. D) Primitive cubic. Show Answer Correct Answer: A) Hexagonal close packed. 41. Which of the following is not a crystalline solid? A) Glass. B) CsCl. C) Rhombic S. D) KCl. Show Answer Correct Answer: A) Glass. 42. Which does not show Frenkel defect A) AgCl. B) AgBr. C) KBr. D) ZnS. Show Answer Correct Answer: C) KBr. 43. The coordination numbers of SC, FCC, BCC are A) 4, 6, 8. B) 1, 2, 4. C) 6, 12, 8. D) 6, 8, 12. Show Answer Correct Answer: D) 6, 8, 12. 44. Which of the following is amorphous solid A) Diamond. B) Quartz. C) Glass. D) All above. Show Answer Correct Answer: C) Glass. 45. Weiss theory of paramagnetism introduces ..... concept to explain magnetization. A) Thermal agitation. B) Magnetic domains. C) Zero-point energy. D) Internal magnetic fields. Show Answer Correct Answer: B) Magnetic domains. 46. Which type of solids are conductors only in aqueous solution or molten state A) Covalent. B) Molecular. C) Metallic. D) Ionic. Show Answer Correct Answer: D) Ionic. 47. ..... are small portable devices that make use of solid state technology. A) Pen drives. B) EEPROM. C) NAND. D) ROM. Show Answer Correct Answer: A) Pen drives. 48. The binding force operating in molecular crystals are A) Vandarwaals force. B) London force. C) Hydrogen bond. D) All of the above. Show Answer Correct Answer: D) All of the above. 49. Solids which are anisotropic in nature are A) Amorphous solids. B) Crystalline solids. C) Both. D) None of the above. Show Answer Correct Answer: B) Crystalline solids. 50. P-type semiconductors are formed When Si or Ge are doped with A) Group 14 elements. B) Group 13 elements. C) Group 15 elements. D) Group 18 elements. Show Answer Correct Answer: B) Group 13 elements. 51. Which of the following statements are true about semiconductors?I. Silicon doped with electron rich impurity is a p-type semiconductorII. Silicon doped with electron rich impurity is an n-type semiconductorIII. Delocalized electrons increase the conductivity of doped siliconIV. An electron vacancy increases the conductivity of n-type semiconductor A) I, II, III and IV. B) II, IV. C) II, III. D) III, IV. Show Answer Correct Answer: C) II, III. 52. Lead (II) sulphide crystal has NaCl structure. What is the distance between Pb$^{2+}$ and S$^{2-}$ in PbS if its density is 12.7 g cm $^{3-}$? (At. mass of Pb =207) A) 200PM. B) 450PM. C) 250PM. D) 300PM. Show Answer Correct Answer: C) 250PM. 53. D.C. series motors are used A) Where load is constant. B) Where load changes frequently. C) Where constant operating speed is needed. D) In none of the above situations. Show Answer Correct Answer: D) In none of the above situations. 54. Name the type of point defect that occur in crystal of zinc sulphide A) Frenkel defect. B) Schottky defect. C) Both. D) None of the above. Show Answer Correct Answer: A) Frenkel defect. 55. The number of atoms present in fcc = ..... A) 1. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 56. In a four quadrant mode of operation, fourth quadrant represents: A) Forward Braking. B) Reverse Motoring. C) Reverse Braking. D) Forward Motoring. Show Answer Correct Answer: C) Reverse Braking. 57. Each of the following solids show, the Frenkel defect except A) ZnS. B) KCl. C) AgI. D) AgBr. Show Answer Correct Answer: B) KCl. 58. Explain the concept of the Fermi level in semiconductors. A) The Fermi level is the energy required to ionize a semiconductor completely. B) The Fermi level is the maximum energy level of holes in a semiconductor. C) The Fermi level is the temperature at which a semiconductor operates. D) The Fermi level is the energy level that indicates the probability of electron occupancy in a semiconductor, crucial for understanding its electrical properties. Show Answer Correct Answer: D) The Fermi level is the energy level that indicates the probability of electron occupancy in a semiconductor, crucial for understanding its electrical properties. 59. Which symmetry operation describes a rotation plus translation? A) Glide plane. B) Roto-transition. C) Rotoinversion. D) Screw axis. Show Answer Correct Answer: D) Screw axis. 60. A substance is ferromagnetic at room temperature, on heating to a certain temperature it becomes A) Diamagnetic. B) Antiferromagnetic. C) Paramagnetic. D) Ferrimagnetic. Show Answer Correct Answer: C) Paramagnetic. ← 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 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