This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 53 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 53 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many crystal systems in Solid state A) 4. B) 5. C) 6. D) 7. Show Answer Correct Answer: D) 7. 2. How many atoms are there in a BCC crystal unit? A) 8. B) 4. C) 2. D) 1. Show Answer Correct Answer: C) 2. 3. Choose the correct optionassertion-no crystal has both schottky and frenkel defectreason-both defects change density of crystal A) Both assertion and reason are correct and reason is correct explanation of assertion. B) Both assertion and reason are correct but reason is not the correct explanation of assertion. C) Assertion is correct but reason is incorrect. D) Both are incorrect. Show Answer Correct Answer: D) Both are incorrect. 4. The miller indices of plane parallel to x and y axes are A) (100). B) (010). C) (111). D) (001). Show Answer Correct Answer: D) (001). 5. Which one of the following is inverse spinal? A) Fe$_{3}$O$_{4}$. B) MgAl$_{2}$O$_{4}$. C) ZnAl$_{2}$O$_{4}$. D) FeCr$_{2}$O$_{4}$. Show Answer Correct Answer: A) Fe$_{3}$O$_{4}$. 6. The basic elements of an electric drive are A) Electric motor and the transmission system. B) Electric motor, the transmission and control system. C) The transmission and control system. D) Electric motor and conversion equipment. Show Answer Correct Answer: B) Electric motor, the transmission and control system. 7. Which metal is ferromagnetic:- A) Zn. B) Mg. C) Fe. D) Pb. Show Answer Correct Answer: C) Fe. 8. Energy of an electron accordingly to Somerfeld's free electron theory is A) $\frac{3}{2}KT$. B) $\frac{n2\pi2h2}{2\pi m2}$. C) $\frac{n\pi h}{2ma2}$. D) $\frac{n2\pi2h}{2\pi m2}$. Show Answer Correct Answer: B) $\frac{n2\pi2h2}{2\pi m2}$. 9. The most asymmetric crystal system is A) Cubic. B) Tetragonal. C) Hexagonal. D) Triclinic. Show Answer Correct Answer: D) Triclinic. 10. An element with density 11.2 g cm$^{-3 }$forms a f.c.c. lattice with the edge length of 4X10$^{-8}$ cm. Calculate the atomic mass of the element. (Given N$_{A}$ =6.02X10$^{23}$ mol$^{-1}$) A) 55g/mol. B) 197g/mol. C) 63.5g/mol. D) 107.9g/mol. Show Answer Correct Answer: D) 107.9g/mol. 11. What is the atomic packing factor of BCC structure? A) 0.54. B) 0.68. C) 0.74. D) 0.96. Show Answer Correct Answer: B) 0.68. 12. TETRAGONAL CRYSTAL SYSTEM AS THE FOLLOWING UNIT CELL DIMENSIONS A) A=b=c and alpha= beta= gamma=90. B) A=b and alpha= beta= gamma=90. C) Alpha= beta= gamma=90. D) A=b and alpha= beta= 90, gamma= 120. Show Answer Correct Answer: B) A=b and alpha= beta= gamma=90. 13. Among solids, the highest melting point is exhibited by A) Covalent solids. B) Ionic solids. C) Pseudo solids. D) Molecular solids. Show Answer Correct Answer: B) Ionic solids. 14. Which types of solids are called pseudo solids A) Amorphous solids. B) Crystalline solids. C) Both. D) None of the above. Show Answer Correct Answer: A) Amorphous solids. 15. PbSO$_{4}$ A) Yellow, soluble. B) White, insoluble. C) White, soluble. D) Yellow, insoluble. Show Answer Correct Answer: B) White, insoluble. 16. In a four quadrant mode of operation, second and fourth quadrant represents: A) Forward Motoring & Forward Braking. B) Forward Braking & Reverse Braking. C) Forward Motoring & Reverse Motoring. D) Reverse Braking & Reverse Motoring. Show Answer Correct Answer: B) Forward Braking & Reverse Braking. 17. CuSO$_{4}$ A) Green, soluble. B) Green, insoluble. C) Blue, soluble. D) Blue, insoluble. Show Answer Correct Answer: C) Blue, soluble. 18. An example of body centered cube is A) Sodium. B) Magnesium. C) Zinc. D) Copper. Show Answer Correct Answer: A) Sodium. 19. An element 'X' (At. mass = 40 g mol$^{-1}$) having f.c.c. structure, has unit cell edge length of 400 pm. Calculate the density of 'X' . A) 4.15 gcm$^{-3}$. B) 4.15 gcm$^{3}$. C) 41.5 gcm$^{-3}$. D) 0.415 gcm$^{-3}$. Show Answer Correct Answer: A) 4.15 gcm$^{-3}$. 20. The lattice site in a pure crystal can not be occupied by ..... A) Molecule. B) Atom. C) Electron. D) Ion. Show Answer Correct Answer: C) Electron. 21. In 3D, all unit cells must be: A) Hexagons. B) Pentagons. C) Cubes. D) Parallelpipeds. Show Answer Correct Answer: D) Parallelpipeds. 22. Bravais lattices are of: A) 10 types. B) 8 types. C) 7 types. D) 14 types. Show Answer Correct Answer: D) 14 types. 23. Doping of Si with P or Al increases the conductivity. the difference in the two cases is A) P gives rise to extra electrons while Al gives rise to holes. B) P gives rise to holes while Al gives rise to extra electrons. C) P is metal whereas Al is a non-metal. D) P is conductor while Al is semiconductor. Show Answer Correct Answer: A) P gives rise to extra electrons while Al gives rise to holes. 24. Radioactivity of a sample (z = 22) decreases 90% after 10 years.What will be the half-life of the sample? A) 5YEARS. B) 2YEARS. C) 3YEARS. D) 10YEARS. Show Answer Correct Answer: C) 3YEARS. 25. The energy gap between filled valence band and the conduction band is large A) Metal. B) Semiconductor. C) Insulator. D) None of the above. Show Answer Correct Answer: C) Insulator. ← 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