This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What does the term "solid state" in solid state welding refer to? A) The welding machine's stability. B) The use of solid electrodes. C) The absence of melting in the welding process. D) The presence of a solid foundation. Show Answer Correct Answer: C) The absence of melting in the welding process. 2. According to band theory A) Electrons are moving freely without any interaction btn. themselves or atomic nuclei. B) Electrons are moving freely without any interaction btn. themselves but under Coulomb field of atomic nuclei. C) Electrons are moving freely between Coulomb interaction btn. themselves but under Coulomb field of atomic nuclei. D) Electrons are moving freely between mechanical interaction btn. themselves but under Coulomb field of atomic nuclei. Show Answer Correct Answer: D) Electrons are moving freely between mechanical interaction btn. themselves but under Coulomb field of atomic nuclei. 3. When electrons are trapped into a crystal in anion vacancy the defect is known as A) Schottky defect. B) Frenkel defect. C) Stoichiometric defect. D) F centre. Show Answer Correct Answer: D) F centre. 4. Which solid state welding method is often used to join dissimilar metals? A) Ultrasonic welding. B) Friction stir welding. C) Explosive welding. D) Resistance spot welding. Show Answer Correct Answer: B) Friction stir welding. 5. A) Graphite is a covalent solid. B) Graphite is a good conductor. A) A and B are correct. B) B is correct. C) A is correct. D) Both are wrong. Show Answer Correct Answer: A) A and B are correct. 6. On heating LiCl, the defect shown by it is A) Stoichiometric defect. B) Non-Stoichiometric defect. C) Schottky defect. D) Frenkel defect. Show Answer Correct Answer: B) Non-Stoichiometric defect. 7. Which of the following statements is incorrect? Powder x-ray diffraction (XRD) uses x-rays to A) Measure the crystalline content of materials. B) Image the surface topography of crystalline materials. C) Identify the crystalline phases present in materials. D) Determine the spacing between the lattice planes of crystalline materials. Show Answer Correct Answer: B) Image the surface topography of crystalline materials. 8. The liquified metal expanding on solidification is A) Ga. B) Al. C) Zn. D) Cu. Show Answer Correct Answer: A) Ga. 9. The particles in a crystalline solid do not move at all. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Calculate the frequency of the rotor side of the IM if the value of slip is 0.34 and the supply frequency is 70 Hz. A) 23.8 hz. B) 22.7. C) 24. D) 21.5. Show Answer Correct Answer: A) 23.8 hz. 11. What is the primary purpose of friction welding in solid state welding? A) To generate electrical currents. B) To create high-pressure gas. C) To produce frictional heat. D) To apply a protective coating. Show Answer Correct Answer: C) To produce frictional heat. 12. What is the primary characteristic of crystalline solids? A) Definite repetition pattern. B) Random arrangement of atoms. C) Irregular atomic structure. D) Absence of periodicity. Show Answer Correct Answer: A) Definite repetition pattern. 13. Which of the following is a covalent or network solid? A) Ice. B) NaCl. C) Diamond. D) SiC. Show Answer Correct Answer: C) Diamond. 14. The contribution of a particle at end face center to the unit cell is A) 1/1. B) 1/2. C) 1/4. D) 1/8. Show Answer Correct Answer: C) 1/4. 15. The density of a face centred cubic element (atomic mass=60.2 amu) is 6.25 g cm$^{-3}$. Calculate the length of the edge of the unit cell. A) 400pm. B) 300pm. C) 200pm. D) 100pm. Show Answer Correct Answer: A) 400pm. 16. Most of the crystals show good cleavage because their constituting particles are A) Weakly bonded together. B) Strongly bonded together. C) Spherically symmetrical. D) Arranged in planes. Show Answer Correct Answer: D) Arranged in planes. 17. In which of the following Crystal's alternative tetrahedral voids are occupied? A) NaCl. B) ZnS. C) CaF2. D) Na2O. Show Answer Correct Answer: B) ZnS. 18. An element with molar mass 2.7 x 10 $^{-2}$ kg mol $^{-1}$ forms a cubic unit cell with edge length 405 pm. If its density is 2.7 x 10 $^{3}$ kg m $^{-3}$, the nature of cubic unit cell is: A) Hcp. B) Ccp. C) Bcc. D) Fcc. Show Answer Correct Answer: D) Fcc. 19. An amorphous solid A) CaCl$_{2}$. B) NaCl. C) Glass. D) CsCl. Show Answer Correct Answer: C) Glass. 20. Wax is an example of ..... ? A) Ionic crystal. B) Covalent crystal. C) Molecular crystal. D) Amorphous solid. Show Answer Correct Answer: C) Molecular crystal. 21. The total number of Bravais lattice in a crystal is: A) 7. B) 14. C) 16. D) 32. Show Answer Correct Answer: B) 14. 22. At zero kelvin semiconductors are A) Perfect metals. B) Perfect semiconductor. C) Perfect Non metals. D) Perfect Insulators. Show Answer Correct Answer: D) Perfect Insulators. 23. What type of force handles for active torques? A) Strong nuclear forces. B) Weak nuclear forces. C) Gravitational forces. D) Electrostatic forces. Show Answer Correct Answer: C) Gravitational forces. 24. ..... solids are also called giant solids or network solids. A) Molecular. B) Covalent. C) Ionic. D) Metallic. Show Answer Correct Answer: B) Covalent. 25. TYPE-VI CALCULATION OF ATOMIC MASS/MOLECULAR MASSQ. (a) An element crystallizes in BCC structure. The edge length of its unit cell is 288 pm . If the density of the crystals is 7.2 g cm$^{-3}$, what is the atomic mass of the element?(b) How many atoms of this element are present in 100 g? A) 107.9g/mol, 6.0 X10$^{23}$atoms. B) 56g/mol, 11.62X10$^{23}$atoms. C) 51.8g/mol, 11.62X10$^{23}$atoms. D) 23g/mol, 9.62X10$^{23}$atoms. Show Answer Correct Answer: C) 51.8g/mol, 11.62X10$^{23}$atoms. ← 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