This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part I > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. CsCl have cubic structure.Its density is 3.99gm/cm$^{3. }$What is distance between Cs$^{+}$ and Cl$^{-}$[At.mass of Cs=133] A) 557. B) 357pm. C) 457pm. D) 257pm. Show Answer Correct Answer: B) 357pm. 2. Which of the following scientists was not a discoverer of Bose-Einstein Condensate? A) Wieman. B) Cornell. C) Ketterle. D) Einstein. Show Answer Correct Answer: D) Einstein. 3. In closed pack array of N speres, the number of tetrahedral holes are A) 4N. B) N. C) 2N. D) N/2. Show Answer Correct Answer: C) 2N. 4. The correct statement regarding defects in crystalline solid is A) Frenkel defect is a dislocation defect. B) Frenkel defect is found in halides of alkaline metals. C) Schottky defects have no effect on the density of crystalline solids. D) Frenkel defects decreases the density of crystalline solids. Show Answer Correct Answer: A) Frenkel defect is a dislocation defect. 5. Select the correct statement ( s ) about non-stoichiometric Compounds A) They are called Berthollide compounds. B) They do not obey the law of constant composition. C) Electrical neutrality is maintained either by having on some of the metal ions extra electrons in the structure or changing the charge on same ions. D) All of the above. Show Answer Correct Answer: D) All of the above. 6. Iodine is which type of solid? A) Molecular. B) Ionic. C) Covalent. D) Metallic. Show Answer Correct Answer: A) Molecular. 7. The density of chromium metal is 7.2 cm$^{-3}$. if the unit cell is cubic with an edge length of 289 pm, determine the type of unit cell. [At the mass of Cr = 52] A) Simple cubic unit cell. B) Body centered cubic unit cell. C) Face centered cubic unit cell. D) None of these. Show Answer Correct Answer: B) Body centered cubic unit cell. 8. What is the coordniation number for FCC A) 8. B) 12. C) 2. D) 6. Show Answer Correct Answer: B) 12. 9. The change in volume of a material due to thermal expansion equals ..... A) $\beta$V/$\Delta$T. B) V$\Delta$T/$\beta$. C) $\beta$$\Delta$T/V. D) $\beta$V$\Delta$T. Show Answer Correct Answer: D) $\beta$V$\Delta$T. 10. Assertion:Frenkel and schottky defects are stoichiometric defects. Reason:Both defects change the density of the crystalline solid. A) D. B) B. C) A. D) C. Show Answer Correct Answer: D) C. 11. A given metal crystallises out with a cubic structure having edge length of 361 pm. if there are four metal atoms in one unit cell, what is the radius of one atom? A) 40 pm. B) 127 pm. C) 10 pm. D) 108 pm. Show Answer Correct Answer: B) 127 pm. 12. Describe the role of minority carriers in a PN junction. A) Minority carriers block current flow in a PN junction. B) Minority carriers facilitate current flow and recombination in a PN junction. C) Minority carriers only exist in the P-type material of a PN junction. D) Minority carriers are not involved in recombination processes. Show Answer Correct Answer: B) Minority carriers facilitate current flow and recombination in a PN junction. 13. What is simplest formula of a compound formed between A and B, if A makes Primitive cubic unit cell and atoms of B occupy body centre. A) A2B. B) AB2. C) A2B3. D) AB. Show Answer Correct Answer: D) AB. 14. Which one of the following is a covalent crystal A) Ice. B) Rock salt. C) Quartz. D) Dry ice. Show Answer Correct Answer: C) Quartz. 15. The only silver halide which can exhibits Schottky as well as Frenkel defect is A) AgF. B) AgCl. C) AgBr. D) AgI. Show Answer Correct Answer: C) AgBr. 16. Among solids the highest melting point is established by: A) Pseudo solid. B) Ionic solid. C) Molecular solid. D) Covalent solid. Show Answer Correct Answer: B) Ionic solid. 17. ..... is shown by those substancesin which all the electrons are paired and there are no unpairedelectrons. A) Diamagnetism. B) Antiferromagnetism. C) Paramagnetism. D) Ferromagnetism. Show Answer Correct Answer: A) Diamagnetism. 18. What is the significance of the unit cell in crystal structures? A) The unit cell only affects the color of the crystal. B) The unit cell is significant as it defines the basic structure and properties of a crystal. C) The unit cell is a random arrangement of atoms in a crystal. D) The unit cell is irrelevant to the properties of a crystal. Show Answer Correct Answer: B) The unit cell is significant as it defines the basic structure and properties of a crystal. 19. What is a key feature of Solid-State Storage compared to traditional hard drives? A) Larger physical size. B) Faster read and write speeds. C) Has moving parts. D) Uses magnetic disks. Show Answer Correct Answer: B) Faster read and write speeds. 20. Co-ordination no. in 1-D packing A) 5. B) 4. C) 3. D) 2. Show Answer Correct Answer: D) 2. 21. The percentage occupied by voids in BCC type of unit cell will be ..... A) 42%. B) 74%. C) 32%. D) 68%. Show Answer Correct Answer: C) 32%. 22. The function of a freewheeling diode is A) Firing angle increase. B) Increase load inductance. C) Reduce load current. D) Load current continuous. Show Answer Correct Answer: D) Load current continuous. 23. KCl when heated in an atmosphere of Potassium vapours exhibit purple colour. This arises due to which type of defect? A) Metal deficient defect due to variable oxidation state of metal. B) Metal excess defect due to presence of extra cation. C) Metal excess defect due to anionic vacancies. D) Impurity defect when a foreign ion is present in the crystal lattice. Show Answer Correct Answer: C) Metal excess defect due to anionic vacancies. 24. Brass is an example of A) Colvent crystal. B) Molecular crystal. C) Ionic crystal. D) Metallic crystal. Show Answer Correct Answer: D) Metallic crystal. 25. What is the function of a capacitor in an electronic circuit? A) A capacitor amplifies the input signal in a circuit. B) A capacitor stores electrical energy and releases it when needed. C) A capacitor converts AC to DC voltage. D) A capacitor acts as a resistor in high-frequency applications. Show Answer Correct Answer: B) A capacitor stores electrical energy and releases it when needed. 26. In Physics lab the laser we use is A) He-Ne laser. B) Diode laser. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 27. ..... shows both schottky and frenkel defect. A) AgCl. B) ZnS. C) NaCl. D) AgBr. Show Answer Correct Answer: D) AgBr. 28. What is the main advantage of solid-state storage in terms of durability? A) Relies on mechanical arm. B) Low cost. C) High capacity. D) Resistant to being dropped. Show Answer Correct Answer: D) Resistant to being dropped. 29. Metals are good conductor of heat and electricity . This property is called A) Metallic. B) Covalent. C) Ionic. D) None of above. Show Answer Correct Answer: A) Metallic. 30. A substance that can be pulled into thin strands of wire is said to be ..... A) Inelastic. B) Ductile. C) Adhesive. D) Malleable. Show Answer Correct Answer: B) Ductile. 31. In Frenkel defect, A) Electrical neutrality of the substance is changed. B) Density of the substance is changed. C) Both cation and anion are missing. D) Overall electrical neutrality is preserved. Show Answer Correct Answer: D) Overall electrical neutrality is preserved. 32. The compound CuCl has Zns structure and the edge length of its unit cell is 500 pm. Calculate its density (Atomic masses:Cu=63.5u, Cl=35.5 Avogardo's constant=6.02 X 10$^{23 }$mol$^{-1}$). A) 7.24g/cm$^{3}$. B) 2.16g/cm$^{3}$. C) 6.16g/cm$^{3}$. D) 5.24g/cm$^{3}$. Show Answer Correct Answer: D) 5.24g/cm$^{3}$. 33. What is boiling point at higher pressure? A) Cannot say. B) Lower. C) Higher. D) Same. Show Answer Correct Answer: C) Higher. 34. The activation energy of a reaction at a given temperature is found to be 2.303 RT J mol$^{-1}$. The ratio of rate constant to the Arrhenius factor is A) 0.02. B) 0.001. C) 0.1. D) 0.01. Show Answer Correct Answer: C) 0.1. 35. At low temperatures the lattice specific heat varies as ..... A) 1/T3. B) 1/T. C) T. D) T3. Show Answer Correct Answer: D) T3. 36. *Which of the following is not true about the ionic solids? A) Bigger ions form the close packed structure. B) Smaller ions occupy either the tetrahedral or the octahedral voids depending upon their size. C) *Occupation of all the voids is not necessary. D) *The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids. Show Answer Correct Answer: D) *The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids. 37. Alloys are examples of A) Pure solids. B) Solid solutions. C) Colloids. D) Liquid solutions. Show Answer Correct Answer: B) Solid solutions. 38. How does temperature affect the performance of a diode? A) Temperature affects diode performance by decreasing forward voltage drop and increasing reverse saturation current. B) Temperature increases forward voltage drop and decreases reverse saturation current. C) Temperature has no effect on diode performance or characteristics. D) Temperature only affects the physical size of the diode without impacting its function. Show Answer Correct Answer: A) Temperature affects diode performance by decreasing forward voltage drop and increasing reverse saturation current. 39. The consideration involved in the selection of the type of electric drive for a particular application depends on A) Speed control range and its nature. B) Starting torque. C) Environmental conditions. D) All of the above. Show Answer Correct Answer: D) All of the above. 40. How do you determine the dynamic resistance of a diode? A) Dynamic resistance is calculated using the formula r d = I / V. B) Dynamic resistance is calculated as r d = $\Delta$V / $\Delta$I. C) Dynamic resistance is determined by the diode's capacitance. D) Dynamic resistance is the same as static resistance. Show Answer Correct Answer: B) Dynamic resistance is calculated as r d = $\Delta$V / $\Delta$I. 41. Find the molarity of 186.55 g of sucrose (C$_{12}$H$_{22}$O$_{11}$) in 250 mL of water. A) 0.545 M. B) 0.746 M. C) 2.18 M. D) 1.18 M. Show Answer Correct Answer: C) 2.18 M. 42. Iodine molecules are held in the crystals lattice by ..... A) London forces. B) Covalent bond. C) Coulombic forces. D) Dipole-dipole interactions. Show Answer Correct Answer: A) London forces. 43. In a primitive unit cell atoms are present at the A) Corners & Centers of any 2 opposite sides. B) Corners only. C) Corners and Body Centre. D) Corners & Centers of all faces. Show Answer Correct Answer: B) Corners only. 44. In solid lattice the cation has left the lattice site and is located at interstetial position, the lattice defect is A) Vacany. B) Frenkel. C) Schottky. D) Interstetial. Show Answer Correct Answer: B) Frenkel. 45. In non-polar molecular solids, the binding force between the particles is A) Stronger dipole-dipole interactions. B) Covalent bond. C) London dispersion forces. D) Strong hydrogen bond. Show Answer Correct Answer: C) London dispersion forces. 46. The lattice site in a pure Crystal cannot be occupied by ..... A) Molecules. B) Atoms. C) Electrons. D) Ions. Show Answer Correct Answer: C) Electrons. 47. Phosphorous can enter the crystal structure of group 14 element forms A) P-type semi conductor. B) N-type semi conductor. C) All the above. D) None of the above. Show Answer Correct Answer: B) N-type semi conductor. 48. Solids with high value of conductivity are called A) Non metal. B) Conductors. C) Insulators. D) Semi Conductors. Show Answer Correct Answer: B) Conductors. 49. B doped with Si is an example of A) P-type semiconductor. B) N-type semiconductor. C) Vacancy defect. D) Interstitial defect. Show Answer Correct Answer: A) P-type semiconductor. 50. Electrical conductivity in metallic solid is due to A) Ions. B) Electrons. C) Impurity. D) None of the above. Show Answer Correct Answer: B) Electrons. 51. To get a n-type semiconductor from silicon, it should be doped with a substance with valence ..... A) 2. B) 4. C) 5. D) 3. Show Answer Correct Answer: C) 5. 52. FERROMAGNETIC substances lose ferrimagnetism on heating and become A) Paramangetic. B) Dimagnetic. C) Normal metals or substance. D) Antiferromagnetic. Show Answer Correct Answer: A) Paramangetic. 53. Anti fluorite structure is for A) Th0$_{2}$. B) Na$_{2}$o. C) Both a and b. D) None of these. Show Answer Correct Answer: B) Na$_{2}$o. 54. Alkali halides do not show Frenkel defect because A) Cations and anions have almost equal size. B) There is a large difference in size of cations and anions. C) Cations and anions have low coordination number. D) Anions cannot be accommodated in voids. Show Answer Correct Answer: A) Cations and anions have almost equal size. 55. Which of the following describes the structure of diamond? A) Body-centered cubic. B) Tetrahedral arrangement. C) Hexagonal close-packed. D) Face-centered cubic. Show Answer Correct Answer: B) Tetrahedral arrangement. 56. The defect found in ZnS is A) Schottky. B) Frenkel. C) Both A and B. D) None of these. Show Answer Correct Answer: B) Frenkel. 57. Which of the following unit cell has all the angles at 90$^\circ$ but the sides are of unequal length? A) Triclinic unit cell. B) Orthorhombic unit cell. C) Hexagonal unit cell. D) Monoclinic unit cell. Show Answer Correct Answer: B) Orthorhombic unit cell. 58. An element is made up of only one kind of ..... A) Plastic. B) Atom. C) Isotope. D) Metal. Show Answer Correct Answer: B) Atom. 59. In which welding process is material deformation achieved by hammering together hot materials? A) Diffusion Bonding (DFW). B) Forge welding. C) Cold Welding (CW). D) Ultrasonic Welding (USW). Show Answer Correct Answer: B) Forge welding. 60. Which of the following will have metal deficiency defect? A) FeO. B) ZnO. C) KCl. D) NaCl. Show Answer Correct Answer: A) FeO. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books