This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 46 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The Sommerfield model improved the Drude model by incorporating ..... A) Quantum mechanics. B) Newtonian mechanics. C) Ionic lattices. D) Electromagnetic fields. Show Answer Correct Answer: A) Quantum mechanics. 2. The number of nearest particles which is in direct contact with a particle in a closed packed structure A) Unit Cell. B) Void. C) Packing efficiency. D) Coordination number. Show Answer Correct Answer: D) Coordination number. 3. What is the smallest repetitive unit of the crystal / lattice structure known as? A) Atom. B) Molecule. C) Lattice Point. D) Unit Cell. Show Answer Correct Answer: D) Unit Cell. 4. ..... principle is used in the cooling of paramagnetic salts. A) Adiabatic demagnetization. B) Magnetic induction. C) Ferromagnetic resonance. D) Thermal conduction. Show Answer Correct Answer: A) Adiabatic demagnetization. 5. What are the key factors of solid-state reactions? A) Size of the particles. B) Mechanical properties of solids. C) Thermodynamic and kinetic factors. D) Environmental factors. Show Answer Correct Answer: D) Environmental factors. 6. In a D.C. shunt motor, speed is A) Independent of armature current. B) Directly proportional to the armature current. C) Proportional to the square of the current. D) Inversely proportional to the armature current. Show Answer Correct Answer: A) Independent of armature current. 7. In the cubic close packing, the unit cell has ..... A) 4 tetrahedral voids each of which is shared by four adjacent unit cells. B) 4 tetrahedral voids within the unit cell. C) 8 tetrahedral voids each of the which is shared by four adjacent unit cells. D) *8 tetrahedral voids within the unit cells. Show Answer Correct Answer: D) *8 tetrahedral voids within the unit cells. 8. Which is an application of laser? A) Medical application. B) Communication. C) Cutting metals. D) All of the above. Show Answer Correct Answer: D) All of the above. 9. What does the Free Electron Theory explain? A) The behavior of conduction electrons in metals. B) The properties of insulators. C) The structure of atomic nuclei. D) None of the above. Show Answer Correct Answer: A) The behavior of conduction electrons in metals. 10. In Crystal of NaCl, the Coordination number of Na$^{+}$ is A) 4. B) 6. C) 8. D) 2. Show Answer Correct Answer: B) 6. 11. The crystal structure of sodium chloride is ..... A) BCC. B) FCC. C) Amorphous. D) Covalent. Show Answer Correct Answer: B) FCC. 12. Name the substance in which the gap between the valence band and conduction band is small . Therefore, some electrons may jump to conduction band and show some conductivity A) Metals. B) Semiconductor. C) Insulators. D) Other. Show Answer Correct Answer: B) Semiconductor. 13. The interparticle forces in solid hydrogen are ..... A) Hydrogen bonds. B) Covalent bonds. C) Coordinate bonds. D) Van der Waal's forces. Show Answer Correct Answer: D) Van der Waal's forces. 14. 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. A) ABO$_{3}$. B) A$_{2}$BO$_{4}$. C) A$_{3}$BO$_{4}$. D) AB$_{2}$O$_{4}$. Show Answer Correct Answer: B) A$_{2}$BO$_{4}$. 15. Which statement is true about Schottky Defect? A) It is observed in compounds having low coordination number. B) It is usually favoured by a very small difference in the sizes of cation and anion. C) It increases the density of the crystal lattice. D) It is a non-stoichiometric point defect. Show Answer Correct Answer: B) It is usually favoured by a very small difference in the sizes of cation and anion. 16. A. Ionic solids are hard and brittleB. Covalent solids are good conducters A) A is correct. B) B is correct. C) Both A and B are correct. D) Both A and B are wrong. Show Answer Correct Answer: A) A is correct. 17. How is a diffractogram (a common way to display output from X-ray diffraction) presented? A) The X-axis shows the angle and the Y-axis shows the diffracted X-ray intensity. B) The X-axis shows the angle and the Y-axis shows the source X-ray intensity. C) The X-axis shows the diffracted X-ray intensity and the Y-axis shows the angle. D) The X-axis shows the source X-ray intensity and the Y-axis shows the angle. Show Answer Correct Answer: A) The X-axis shows the angle and the Y-axis shows the diffracted X-ray intensity. 18. 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 A) Anisotropic. B) Isotropic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anisotropic. 19. The coordination number of ions in KCl is A) 4:4. B) 6:6. C) 8:8. D) 4:8. Show Answer Correct Answer: B) 6:6. 20. A defect where atoms occupy the empty space between existing atoms within a crystal A) Interstitial Defect. B) Frenkel Defect. C) Vacancy Defect. D) Schottky Defect. Show Answer Correct Answer: A) Interstitial Defect. 21. 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 A) SC. B) BCC. C) FCC. D) HCP. Show Answer Correct Answer: B) BCC. 22. In which pair the most efficient packing is present? A) Hcp and bcc. B) Hcp and ccp. C) Bcc and ccp. D) Bcc and scc. Show Answer Correct Answer: B) Hcp and ccp. 23. An extra atom present in the void between atoms is called "vacancy" A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. RCP undervoltage setpoint drifting ..... (1) ..... is less conservative, the reactor is more likely to exceed ..... (2) ..... limits. A) High(2) DNB. B) High(2) fuel integrity. C) Low(2) DNB. D) Low(2) fuel integrity. Show Answer Correct Answer: C) Low(2) DNB. 25. Which of the following materials is NOT typically suitable for solid state welding? A) Non-ferrous metals. B) Thermoplastics. C) Highly brittle ceramics. D) Low carbon steel. Show Answer Correct Answer: C) Highly brittle ceramics. ← PreviousNext →Related 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 8Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 9Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books