This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. The appearance of colour in solid alkali metal halides is generally due to A) Schhotky defect. B) F-centres. C) Frenkel defect. D) Interstitial position. Show Answer Correct Answer: B) F-centres. 3. Which equation represents the change in Gibbs free energy for a process at constant temperature and pressure? A) DG = dU + PdV. B) DG = dH-TdS. C) DG = VdP-SdT. D) DG = dU + TdS. Show Answer Correct Answer: C) DG = VdP-SdT. 4. 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) 330pm. D) 430pm. Show Answer Correct Answer: C) 330pm. 5. One cube has ..... unit cell A) 4. B) 2. C) 8. D) 6. Show Answer Correct Answer: C) 8. 6. 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) Cost. B) Capacity. C) Portability. D) Reliability. E) Capacity. Show Answer Correct Answer: D) Reliability. 7. Which of the following motor is preferred for blowers? A) Wound rotor induction motor. B) Squirrel cage induction motor. C) DC shunt motor. D) DC series motor. Show Answer Correct Answer: B) Squirrel cage induction motor. 8. Solutions which do not obey the Raoults law over the entire range of concentration, are called A) Ideal solutions. B) Non-ideal solutions. C) Saturated solutions. D) None of the above. Show Answer Correct Answer: B) Non-ideal solutions. 9. Which of the following statements about amorphous solids is incorrect? A) They melt over a range of temperature. B) They are anisotropic. C) There is no orderly arrangement of particles. D) They are rigid and incompressible. Show Answer Correct Answer: B) They are anisotropic. 10. The Material that softens on heating to finally flow like a liquid is A) Liquid. B) Crystalline solids. C) Amorphous solid. D) Polycrystalline solid. Show Answer Correct Answer: B) Crystalline solids. 11. Soft superconductors observe A) Meissner Effect. B) Silsbee's rule. C) Both a and b. D) None of the above. Show Answer Correct Answer: A) Meissner Effect. 12. The coordination no. in ccp and hcp unit cell is A) 8. B) 12. C) 4. D) 2. Show Answer Correct Answer: B) 12. 13. The bond that exists in a semiconductor is: A) Ionic bond. B) Covalent bond. C) Metallic bond. D) Hydrogen bond. Show Answer Correct Answer: B) Covalent bond. 14. Fe$_{3}$O$_{4 }$which is a mixed oxide of iron also comes under the category of ferrites exhibit which type of magnetism? A) Diamagnetism. B) Paramagnetism. C) Ferromagnetism. D) Ferrimagnetism. Show Answer Correct Answer: D) Ferrimagnetism. 15. An iron oxide crystallizes in a hexagonal close-packed arrangement of oxide ions with two out of every three octahedral voids occupied by iron. Give the formula of the iron oxide. A) FeO. B) Fe$_{2}$O$_{3}$. C) Fe$_{3}$O$_{4}$. D) Fe$_{3}$O$_{2}$. Show Answer Correct Answer: B) Fe$_{2}$O$_{3}$. 16. Coordination number of Tetrahedral Void A) 4. B) 6. C) 12. D) 8. Show Answer Correct Answer: A) 4. 17. Which one of the following is an example of moleculer solidCo2 or sio2 A) Co2. B) Sio2. C) All the above. D) None of the above. Show Answer Correct Answer: A) Co2. 18. The no. of atoms present per unit cell in simple, face-centred and body centred unit cells are respectively A) 1, 4, 3. B) 1, 2, 4. C) 2, 4, 1. D) 1, 4, 2. Show Answer Correct Answer: D) 1, 4, 2. 19. What is coordination number of an octahedral void A) 3. B) 4. C) 6. D) 12. Show Answer Correct Answer: C) 6. 20. An element with molar mass 64 gmol $^{-1}$ and density 6.6 g cm $^{-3}$ forms a cubic unit cell.The edge length of unit cell is 4 x 10 $^{-8}$cm.The type of cubic unit cell formed is? A) Fcc. B) Ccp. C) Bcc. D) Hcp. Show Answer Correct Answer: A) Fcc. 21. Analysis shows that a metal oxide has a empirical formula M$_{0.96}$O. Calculate the percentage of M$^{2+}$ and M$^{3+}$ ions in this crystal. A) [M$^{2+}$ = 93.7%, M$^{3+}$ = 6.3%]. B) [M$^{2+}$ = 95.7%, M$^{3+}$ = 4.3%]. C) [M$^{2+}$ = 91.7%, M$^{3+}$ = 8.3%]. D) [M$^{2+}$ = 97.7%, M$^{3+}$ = 2.3%]. Show Answer Correct Answer: C) [M$^{2+}$ = 91.7%, M$^{3+}$ = 8.3%]. 22. What is conduction band? A) Higher energy orbital. B) Lower energy orbital. C) Moderate energy orbital. D) None of the above. Show Answer Correct Answer: A) Higher energy orbital. 23. What is other name for frequency control of 3phase IM? A) V/f control. B) Kramer's Drive. C) Rotor resistance control. D) Field weakening method. Show Answer Correct Answer: D) Field weakening method. 24. If NaCl is doped with 10$^{-3}$ mol % of SrCl$_{2}$, what is the concentration of cation vacancies? A) 6.02 x 10 $^{23}$. B) 6.02 x 10 $^{20}$. C) 6.02 x 10 $^{18}$. D) 6.02 x 10 $^{19}$. Show Answer Correct Answer: C) 6.02 x 10 $^{18}$. 25. Metal deficiency defect due to:- A) Missing of anion. B) Excess of cation. C) Missing of cation. D) Both a and b. Show Answer Correct Answer: C) Missing of cation. ← 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