This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. CuO A) Yellow, soluble. B) Green, insoluble. C) Blue, soluble. D) Black, insoluble. Show Answer Correct Answer: D) Black, insoluble. 2. ZnO is white when cold and yellow when heated. It is due to the development of A) Frenkel defect. B) Schottky defect. C) Metal excess defect. D) Metal deficiency defect. Show Answer Correct Answer: C) Metal excess defect. 3. What is the condition for steady state stability of motor? A) Tm = TL. B) Tm < TL. C) Tm > TL. D) Tm + J = TL. Show Answer Correct Answer: C) Tm > TL. 4. An ion leaves its regular site to occupy a position in space between lattice sites is A) Frenkel defects. B) Schottky defect. C) Impurity defect. D) Vacancy defect. Show Answer Correct Answer: A) Frenkel defects. 5. 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) 4 & 2. B) 9 & 14. C) 2 & 4. D) 14 & 9. Show Answer Correct Answer: C) 2 & 4. 6. Silicon doped with electron-rich impurity forms ..... A) P-type semiconductor. B) N-type semiconductor. C) Intrinsic semiconductor. D) Insulator. Show Answer Correct Answer: B) N-type semiconductor. 7. The most unsymmetrical crystal system is A) Cubic. B) Hexagonal. C) Triclinic. D) Orthorombic. Show Answer Correct Answer: C) Triclinic. 8. What is the better choice of motor drive is suitable for lift application? A) DC Series motor. B) DC Shunt motor. C) DC Compound motor. D) Differential compound motor. Show Answer Correct Answer: A) DC Series motor. 9. 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. 10. 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. 11. In which of the following defects equal number of anions and cations are missing from lattice site? A) Vacancy defect. B) Interstitial defect. C) Schottky defect. D) Frenkel Defect. Show Answer Correct Answer: C) Schottky defect. 12. 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. 13. The coordination number of a metal crystallizing in a hexagonal close packing (hcp) structure is A) 12. B) 08. C) 06. D) 07. Show Answer Correct Answer: A) 12. 14. Which of the following is NOT a characteristic of Solid-State Storage? A) Durability. B) Speed. C) Silent operation. D) Low cost. Show Answer Correct Answer: D) Low cost. 15. Electrical conductivity in semiconductor is due to A) Ions. B) Electrons. C) Impurity. D) None of the above. Show Answer Correct Answer: C) Impurity. 16. FeO is an example of ..... A) Metal excess defect. B) Metal deficiency defect. C) Schottky defect. D) Frenkel defect. Show Answer Correct Answer: B) Metal deficiency defect. 17. Materials which lack permanent magnetic dipoles are called ..... A) Diamagnetic. B) Ferromagnetic. C) Semi-magnetic. D) Paramagnetic. Show Answer Correct Answer: A) Diamagnetic. 18. Crystalline solids are A) Anisotropic. B) Isotropic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anisotropic. 19. 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. 20. 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. 21. 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$^{2+}$ = 2; C. N. of B$^{-}$=4. B) N. of A$^{2+}$ = 4; C. N. of B$^{-}$=8. C) N. of A$^{2+}$ = 8; C. N. of B$^{-}$=4. D) N. of A$^{2+}$ = 4; C. N. of B$^{-}$=4. Show Answer Correct Answer: C) N. of A$^{2+}$ = 8; C. N. of B$^{-}$=4. 22. Diamond is a A) Good thermal conductor. B) Good Electrical conductor. C) Thermal Insulator. D) None of the above. Show Answer Correct Answer: A) Good thermal conductor. 23. 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. 24. 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) 19.4gm/cm$^{3}$, 143.9pm. B) 21gm/cm$^{3}$, 150.1pm. C) 25gm/cm$^{3}$, 149pm. D) 18gm/cm$^{3}$, 160pm. Show Answer Correct Answer: A) 19.4gm/cm$^{3}$, 143.9pm. 25. 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. B) XY$_{2}$. C) X$_{2}$Y. D) XY$_{4}$. Show Answer Correct Answer: A) XY. ← 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 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 10Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books