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 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Packing efficiency of face centred unit cell A) 68. B) 74. C) 55. D) 52. Show Answer Correct Answer: B) 74. 2. Graphite is a good conductor of electricity due to the presence of A) Cations. B) Anions. C) Lone pairs of electrons. D) Free valence electrons. Show Answer Correct Answer: D) Free valence electrons. 3. A. Ionic solids are hard and brittle. B. Covalent solids are good conductors. A) A and B are correct. B) A is correct. C) B is correct. D) Both A and B are wrong. Show Answer Correct Answer: B) A is correct. 4. In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is A) A$_{2}$B$_{3}$. B) A$_{2}$B$_{5}$. C) A$_{2}$B. D) AB$_{2}$. Show Answer Correct Answer: B) A$_{2}$B$_{5}$. 5. How many unit cells share a corner in a crystal lattice A) 8. B) 12. C) 4. D) 2. Show Answer Correct Answer: A) 8. 6. Relay state solid yang diisolasi dengan transformator menggunakan transformator frekuensi tinggi untuk memisahkan sisi input dan output perangkat secara elektrik. Transformator biasanya dikopel dengan amplifier isolasi untuk memberikan tingkat perlindungan yang diperlukan. Ini adalah jenis SSR A) Photo Coupled SSR. B) Hybrid SSR. C) Transformer Isolated SSR. D) Reed Isolated SSR. Show Answer Correct Answer: C) Transformer Isolated SSR. 7. For an SCR in the forward blocking mode (practically) A) Leakage current flows from anode to cathode. B) Leakage current flows from gate to anode. C) Leakage current does not flow. D) Leakage current flows from cathode to anode. Show Answer Correct Answer: A) Leakage current flows from anode to cathode. 8. Ward-Leonard controlled D.C. drives are generally used for ..... excavators. A) Light duty. B) Medium duty. C) Heavy duty. D) All of the above. Show Answer Correct Answer: C) Heavy duty. 9. The example of attraction between positively charged metal ions and sea of electrons, in solid state of substance is found in A) Fe. B) Ne. C) H$_{2}$. D) Na. Show Answer Correct Answer: A) Fe. 10. What is the coordination number for a simple cubic structure? A) 12. B) 4. C) 6. D) 8. Show Answer Correct Answer: C) 6. 11. The number of tetrahedral voids in the unit cell of fcc lattice of similar atom is A) 5. B) 4. C) 12. D) 8. Show Answer Correct Answer: D) 8. 12. An example of a crystal defect is ..... A) Free electrons in the conduction band. B) A vacancy (missing atom) in the lattice. C) A filled valence band. D) Acoustic phonons. Show Answer Correct Answer: B) A vacancy (missing atom) in the lattice. 13. The coordination number for an ion is ..... A) The number of the other nearest types of ion. B) The number of that ion in the unit cell. C) The number of particles touching that ion. D) Puppies!. Show Answer Correct Answer: A) The number of the other nearest types of ion. 14. In a cubic lattice 'A' atoms occupy the corners, 'B' atoms occupy all the face centers except one, and 'C' atoms occupy the alternate edge centers. The formula of the unit cell is A) AB$_{5}$C$_{3}$. B) A$_{2}$B$_{5}$C$_{2}$. C) A$_{2}$B$_{5}$C$_{3}$. D) AB$_{3}$C$_{3}$. Show Answer Correct Answer: B) A$_{2}$B$_{5}$C$_{2}$. 15. How many atoms are present in primitive unit cell A) 1. B) 3. C) 4. D) 2. Show Answer Correct Answer: A) 1. 16. If atoms of an element X make an FCC and atoms of Y occupy edge centers and body centre of this unit cell, what is the formula of compound between X and Y A) XY2. B) Can't be predicted. C) XY. D) X2Y. Show Answer Correct Answer: C) XY. 17. What welding technique uses explosives to create strong bonds between materials? A) Explosive welding. B) Ultrasonic welding. C) Friction stir welding. D) Resistance spot welding. Show Answer Correct Answer: A) Explosive welding. 18. Example of ANTIFERROMAGNETISM A) MnO. B) HF. C) HCl. D) NaCl. Show Answer Correct Answer: A) MnO. 19. At very low temperature, oxygen freezes and forms crystalline solid. Which term best describes the solid? A) Ionic. B) Covalent. C) Metallic. D) Molecular. Show Answer Correct Answer: D) Molecular. 20. A solid is made up of two elements P and Q. Q are arranged in ccp. while P occupy all tetrahedral sites. formula of compound A) P$_{2}$Q. B) PQ$_{3}$. C) PQ. D) PQ$_{2}$. Show Answer Correct Answer: A) P$_{2}$Q. 21. The main difference between crystalline and amorphous solids is ..... A) Crystalline solids have random atomic arrangements, while amorphous solids are ordered. B) Crystalline solids have ordered atomic arrangements, while amorphous solids are disordered. C) Both have identical atomic structures. D) Only amorphous solids can conduct electricity. Show Answer Correct Answer: B) Crystalline solids have ordered atomic arrangements, while amorphous solids are disordered. 22. The edge length of a face centered cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is A) 144. B) 288. C) 618. D) 398. Show Answer Correct Answer: A) 144. 23. Assertion:Face-centred cubic cell has four atoms per unit cell. Reason:In fcc unit, there are eight atoms at the corner and six atoms at face centers(a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true, but reason is not the correct explanation of assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. A) D. B) B. C) C. D) A. Show Answer Correct Answer: D) A. 24. On which basis, solid state has been classified into crystalline and amorphous state A) Intermolecular forces. B) Size. C) Arrangements of constituent particles. D) Shape. Show Answer Correct Answer: C) Arrangements of constituent particles. 25. Acetone and carbon tetrachloride form a non-ideal solution showing A) Positive deviation from Raoult's law. B) Negative deviation from Raoult's law. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive deviation from Raoult's law. 26. What characterizes acoustic phonons? A) High-frequency vibrations. B) Low-frequency vibrations where atoms move in-phase. C) Vibrations that do not carry energy. D) None of the above. Show Answer Correct Answer: B) Low-frequency vibrations where atoms move in-phase. 27. What type of bond is formed in solid state welding when materials mechanically interlock at the interface? A) Fusion bond. B) Metallurgical bond. C) Solder joint. D) Mechanical bond. Show Answer Correct Answer: D) Mechanical bond. 28. ..... is the basic repeated structural unit of a crystalline solid. A) Molecule. B) Monomer. C) Atom. D) Unit cell. Show Answer Correct Answer: D) Unit cell. 29. Peizo electricity example A) Sodium potassium tartarate. B) Lead zirconate. C) Barium titanate. D) And Potassium dihydrogen phosphate. Show Answer Correct Answer: B) Lead zirconate. 30. Consider X-ray diffraction from a crystal with a FCC lattice. The lattice plane for which there is no diffraction peak is A) (212). B) (111). C) (200). D) (311). Show Answer Correct Answer: D) (311). 31. When ZnO is heated it turns yellow. It shows A) Non stoichiometric defect due to cation deficiency. B) Non stoichiometric defect due to cation excess. C) Non stoichiometric defect due to anion excess. D) None of the above. Show Answer Correct Answer: B) Non stoichiometric defect due to cation excess. 32. Which of the following solids is not an electrical conductor?1) Mg(s)2) TiO(s)3) I2(s)4) H2O(s) A) Only 1. B) Only 2. C) 3 and 4. D) 2, 3 and 4. Show Answer Correct Answer: C) 3 and 4. 33. Which one of following is most correct A) Brass is an interstitial alloy, which steel is a substitutional alloy. B) Steel is an interstitial alloy, which brass is a substitutional alloy. C) Brass and steel both are substitutional alloys. D) Brass and steel both are interstitial alloys. Show Answer Correct Answer: B) Steel is an interstitial alloy, which brass is a substitutional alloy. 34. Which of the following is not a characteristic of a crystalline solid? A) Isotropic nature. B) Definite and characteristic heat of fusion. C) A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal. D) A true solid. Show Answer Correct Answer: A) Isotropic nature. 35. Zonas las biasanya terbatas pada wilayah yang sempit; ukurannya tergantung pada parameter berikut yang benar adalah? A) Semua benar. B) Jumlah panas yang dihasilkan. C) Konduktivitas termal bahan. D) Sifat mekanik dari material yang disambung pada temperatur tinggi. Show Answer Correct Answer: A) Semua benar. 36. How to transform NaCl structure to CsCl structure A) Low pressure. B) High temperature. C) Low temperature. D) High pressure. Show Answer Correct Answer: D) High pressure. 37. The electrons in Valence bond are A) Freely moving inside the solid. B) Tightly bonded inside the solid. C) Lies in the innermost orbits and cannot be made free. D) Lies in the outermost orbits and cannot be made free. Show Answer Correct Answer: B) Tightly bonded inside the solid. 38. The number of atoms per unit cell of bcc structure is A) 5. B) 2. C) 1. D) 6. Show Answer Correct Answer: B) 2. 39. Coordination no. of hexagonal close packing in 2D A) 2. B) 4. C) 3. D) 6. Show Answer Correct Answer: D) 6. 40. In monoclinic crystal system, which among the following variations are possible? A) Primitive, Body-centred, Face-centred. B) Primitive, Body-centred, Face-centred, End-centred. C) Body-centred, Face-centred. D) Primitive, End-centred. Show Answer Correct Answer: D) Primitive, End-centred. 41. A metal oxide has formula M$_{0.98}$O. The fraction of M$^{+3}$ ion is (assuming M exists in +2 and +3 oxidation states) A) 4.08%. B) 10.10%. C) 7.01%. D) 6.05%. Show Answer Correct Answer: A) 4.08%. 42. Assertion:Due to frenkel defect, density of the crystalline solid decreasesReason:in frenkel defect cations and anions leaves the crystal. A) Both assertion and reason are true and a reason is the correct explanation of assertion. B) Both assertion and reason are true and a reason is not the correct explanation of assertion. C) Assertion is true but reason is false. D) Both assertion and reason are false. Show Answer Correct Answer: D) Both assertion and reason are false. 43. The number of atoms per unit cell in simple, fcc and and bcc unit cells are A) 1, 4, 2. B) 1, 2, 4. C) 2, 4, 1. D) 1, 2, 3. Show Answer Correct Answer: A) 1, 4, 2. 44. When NaCl crystal is doped with SrCl2, the nature of Defect produced is A) Impurity defect. B) Metal excess Defect. C) Schottky Defect. D) Frenkel Defect. Show Answer Correct Answer: A) Impurity defect. 45. In which of the following applications variable speed operation is preferred? A) Ceiling fan. B) Water pump. C) Exhaust fan. D) Refrigerator. Show Answer Correct Answer: A) Ceiling fan. 46. Which of the following point defects are shown by AgBr(s) Crystal A) C-metal excess defect. B) A-Schottky defect. C) A&B. D) C-metal deficiency defect. E) B-Frankel defect. Show Answer Correct Answer: C) A&B. 47. WHICH ONE IS THE AMORPHOUS SOLID A) GLASS. B) GRAPHITE. C) COMMON SALT. D) DIAMOND. Show Answer Correct Answer: A) GLASS. 48. In NaCl structure the edge length is 520 pm and radius of cation is 100 pm then radius of anion is A) 160 pm. B) 140 pm. C) 200pm. D) 144pm. Show Answer Correct Answer: A) 160 pm. 49. Which one of the following statements about the (121) and (242) planes is false? A) They are perpendicular. B) They are part of the same set of planes. C) They are part of the same family of planes. D) They are parallel. Show Answer Correct Answer: A) They are perpendicular. 50. In a metallic crystal A) The valence electrons constitute a sea of mobile electrons. B) The valence electrons are localized in between the kernels. C) The valence electrons remain within the field of influence of their own kernels. D) None of the above. Show Answer Correct Answer: A) The valence electrons constitute a sea of mobile electrons. 51. Assertion:When NaCl is added to water an elevation in boiling point is observed.Reason:elevation in vapour pressure of solution causes elevation in boiling point. A) A and R both are correct and R is the correct explanation of A. B) A and R both are correct but R is not the correct explanation of A. C) A is correct but R is wrong . D) A is wrong but R is correct. Show Answer Correct Answer: C) A is correct but R is wrong . 52. In diamond, each carbon atom forms ..... covalent bonds with other carbon atoms. A) Four. B) Three. C) Two. D) None of the above. Show Answer Correct Answer: A) Four. 53. The net atoms are ..... A) The larger particles in the unit cell. B) The percentage of atoms in the unit cell. C) The total number of atoms in the molecule. D) The total number of atoms found by adding together all portions of the contributing particles. Show Answer Correct Answer: D) The total number of atoms found by adding together all portions of the contributing particles. 54. Assertion (A) The total number of atoms present in a simple cubic unit cell is one Reason (R) Simple cubic unit cell has atoms at its corner. each of which is shared between eight adjacent unit A) Both (A) and (R) are correct and (R) is the correct explanation of (A). B) Both (A) and (R) are correct but (R) is not the correct explanation of (A). C) A) is correct but (R) is incorrect. D) A) is incorrect but (R) is correct. Show Answer Correct Answer: A) Both (A) and (R) are correct and (R) is the correct explanation of (A). 55. Basic crystal systems known are A) 9. B) 6. C) 7. D) 8. Show Answer Correct Answer: C) 7. 56. What is the number of tetrahedral voids per atom in a crystal lattice? A) 3. B) 2. C) 4. D) 1. Show Answer Correct Answer: B) 2. 57. An element crystallizes in a structure having f.c.c. unit cell of edge 200 pm . Calculate the density if 200g of this element contains 24 X 10$^{23}$ atoms. A) 51.67gm.cm$^{-3}$. B) 71.67gm.cm$^{-3}$. C) 41.67gm.cm$^{-3}$. D) 61.67gm.cm$^{-3}$. Show Answer Correct Answer: C) 41.67gm.cm$^{-3}$. 58. What does the term "solid state" in solid state welding refer to? A) The absence of melting in the welding process. B) The presence of a solid foundation. C) The use of solid electrodes. D) The welding machine's stability. Show Answer Correct Answer: A) The absence of melting in the welding process. 59. According to band theory A) Electrons are moving freely between Coulomb interaction btn. themselves but under Coulomb field of atomic nuclei. B) Electrons are moving freely between mechanical interaction btn. themselves but under Coulomb field of atomic nuclei. C) Electrons are moving freely without any interaction btn. themselves or atomic nuclei. D) Electrons are moving freely without any interaction btn. themselves but under Coulomb field of atomic nuclei. Show Answer Correct Answer: B) Electrons are moving freely between mechanical interaction btn. themselves but under Coulomb field of atomic nuclei. 60. Which solid state welding method is often used to join dissimilar metals? A) Ultrasonic welding. B) Resistance spot welding. C) Friction stir welding. D) Explosive welding. Show Answer Correct Answer: C) Friction stir welding. ← 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 7Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 8Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books