This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is not the characteristic of ionic solids? A) Very low value of electrical conductivity in the molten state. B) Brittle nature. C) Very strong forces of interactions. D) Anisotropic nature. Show Answer Correct Answer: A) Very low value of electrical conductivity in the molten state. 2. What is the primary temperature range for Friction Stir Welding (FSW)? A) Below 100$^\circ$C (212$^\circ$F). B) 230$^\circ$C to 260$^\circ$C (450$^\circ$F to 500$^\circ$F). C) Above 1000$^\circ$C (1832$^\circ$F). D) Room temperature. Show Answer Correct Answer: B) 230$^\circ$C to 260$^\circ$C (450$^\circ$F to 500$^\circ$F). 3. If a non metal is added to interstitial site of a metal then metal becomes A) Softer. B) Less tensile. C) Less malleable. D) More ductile. Show Answer Correct Answer: D) More ductile. 4. Name an element with which germanium can be doped to produce an n-type semiconductor A) Boron. B) Gallium. C) Indium. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 5. Total number of atoms per unit cell in BCC A) 2. B) 4. C) All the above. D) None of the above. Show Answer Correct Answer: A) 2. 6. A metal crystallises with a face centred cubic lattice.The edge of the unit cell is 408 pm.The diameter of the metal is: A) 288 pm. B) 408 pm. C) 144 pm. D) 204 pm. Show Answer Correct Answer: A) 288 pm. 7. Proses Resistance Welding (RW) memiliki kekurangan yaitu, membutuhkan elektroda habis pakai, gas pelindung, atau fluks. A) Benar. B) Salah. C) All the above. D) None of the above. Show Answer Correct Answer: B) Salah. 8. What is 50 $^\circ$C in Kelvin? A) 223. B) 323. C) 100. D) 50. Show Answer Correct Answer: B) 323. 9. The power and control circuit is simple and inexpensive in A) AC drives. B) DC drives. C) Power modulator. D) Mechanical Load. Show Answer Correct Answer: B) DC drives. 10. Consider the following statements .1-If an Fe2 + is missing from its lattice site in FeO then there must be two Fe + ions somewhere in the lattice to balance the electrical charges2-Crystals with metal deficiency defects are called super-conductors3-Crystals with metal deficiency defects are called semiconductors Select the correct alternate . A) 1 and 2. B) 1 and 3. C) Only 2. D) Only 1. Show Answer Correct Answer: D) Only 1. 11. During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is A) 330 minutes. B) 55 minutes. C) 110 minutes. D) 220 minutes. Show Answer Correct Answer: C) 110 minutes. 12. How does the Drude model describe electrical conductivity? A) As a function of electron density and relaxation time. B) As a constant value for all materials. C) As dependent only on temperature. D) None of the above. Show Answer Correct Answer: A) As a function of electron density and relaxation time. 13. Transition element Show defect A) Schottky Defect. B) Frenkel Defect. C) Metal excess Defect. D) Metal deficiency Defect. Show Answer Correct Answer: D) Metal deficiency Defect. 14. Crystalline solid is converted into amorphous by A) Heating. B) Cooling. C) Slow heating and slow cooling. D) Heating and rapid cooling. Show Answer Correct Answer: D) Heating and rapid cooling. 15. Number of atoms in FCC are A) 6. B) 4. C) 8. D) 1. Show Answer Correct Answer: B) 4. 16. The packing efficiency of a metal crystal for a simple cubic lattice is: A) 65%. B) 52.4%. C) 60%. D) 54.5%. Show Answer Correct Answer: B) 52.4%. 17. What is the number of particles per unit cell in case of a body centred cubic unit cell. A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 18. Which of the following shows both frenkel and schottky defect A) AgBr. B) AgCl. C) NaCl. D) KCl. Show Answer Correct Answer: A) AgBr. 19. Which of the following is an amorphous solid? A) Graphite (C). B) Quartz glass (SiO$_{2}$). C) Chrome alum. D) Silicon carbide (SiC). Show Answer Correct Answer: B) Quartz glass (SiO$_{2}$). 20. TYPE-II CALCULATION OF EDGE/INTERIONIC DISTANCE/RADIUS FROM DENSITYQ. The compound CuCl has Zns(cubic) structure. Its density is 3.4 g cm$^{-3}$. What is the length of the edge of the unit cell? (Atomic masses Cu=63.5, Cl=35.5). A) 478pm. B) 578pm. C) 278pm. D) 178pm. Show Answer Correct Answer: B) 578pm. 21. In an ionic bond, the bond is formed due to ..... A) Sharing of electrons. B) Transfer of electrons. C) Overlap of atomic orbitals. D) Dipole-dipole interaction. Show Answer Correct Answer: B) Transfer of electrons. 22. When electrons are trapped in the crystal in the anionic 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. 23. In Metal the difference of energy between valence band and conduction band A) Is negligible. B) Is small. C) Is large. D) None of the above. Show Answer Correct Answer: A) Is negligible. 24. In NaCl structure, Na+ ions occupies: A) All octahedral and tetrahedral sites are occupied. B) Only octahedral sites are occupied. C) Only tetrahedral sites are occupied. D) Neither octahedral nor tetrahedral sites are occupied. Show Answer Correct Answer: B) Only octahedral sites are occupied. 25. A face centred cubic element atomic mass 60 has a Cell edge of 400 pm. What is its density? A) 6.2g/cm. B) 24.8g/cm. C) 12.4g/cm. D) 3.1g/cm. Show Answer Correct Answer: A) 6.2g/cm. ← 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