This quiz works best with JavaScript enabled. Home > Class 12 > 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 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. Zonas las biasanya terbatas pada wilayah yang sempit; ukurannya tergantung pada parameter berikut yang benar adalah? A) Jumlah panas yang dihasilkan. B) Konduktivitas termal bahan. C) Sifat mekanik dari material yang disambung pada temperatur tinggi. D) Semua benar. Show Answer Correct Answer: D) Semua benar. 4. How to transform NaCl structure to CsCl structure A) Low pressure. B) High pressure. C) High temperature. D) Low temperature. Show Answer Correct Answer: B) High pressure. 5. 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. 6. The number of atoms per unit cell of bcc structure is A) 1. B) 2. C) 5. D) 6. Show Answer Correct Answer: B) 2. 7. Coordination no. of hexagonal close packing in 2D A) 2. B) 3. C) 4. D) 6. Show Answer Correct Answer: D) 6. 8. In monoclinic crystal system, which among the following variations are possible? A) Primitive, End-centred. B) Body-centred, Face-centred. C) Primitive, Body-centred, Face-centred, End-centred. D) Primitive, Body-centred, Face-centred. Show Answer Correct Answer: A) Primitive, End-centred. 9. 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) 7.01%. B) 10.10%. C) 6.05%. D) 4.08%. Show Answer Correct Answer: D) 4.08%. 10. 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. 11. The number of atoms per unit cell in simple, fcc and and bcc unit cells are A) 1, 2, 4. B) 2, 4, 1. C) 1, 4, 2. D) 1, 2, 3. Show Answer Correct Answer: C) 1, 4, 2. 12. When NaCl crystal is doped with SrCl2, the nature of Defect produced is A) Schottky Defect. B) Frenkel Defect. C) Metal excess Defect. D) Impurity defect. Show Answer Correct Answer: D) Impurity defect. 13. In which of the following applications variable speed operation is preferred? A) Exhaust fan. B) Ceiling fan. C) Refrigerator. D) Water pump. Show Answer Correct Answer: B) Ceiling fan. 14. Which of the following point defects are shown by AgBr(s) Crystal A) A-Schottky defect. B) B-Frankel defect. C) C-metal excess defect. D) C-metal deficiency defect. E) A&B. Show Answer Correct Answer: E) A&B. 15. WHICH ONE IS THE AMORPHOUS SOLID A) DIAMOND. B) GRAPHITE. C) COMMON SALT. D) GLASS. Show Answer Correct Answer: D) GLASS. 16. In NaCl structure the edge length is 520 pm and radius of cation is 100 pm then radius of anion is A) 140 pm. B) 160 pm. C) 144pm. D) 200pm. Show Answer Correct Answer: B) 160 pm. 17. 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. 18. 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. 19. 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 . 20. 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. 21. 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. 22. 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). 23. Basic crystal systems known are A) 6. B) 8. C) 7. D) 9. Show Answer Correct Answer: C) 7. 24. What is the number of tetrahedral voids per atom in a crystal lattice? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 25. 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) 41.67gm.cm$^{-3}$. B) 51.67gm.cm$^{-3}$. C) 61.67gm.cm$^{-3}$. D) 71.67gm.cm$^{-3}$. Show Answer Correct Answer: A) 41.67gm.cm$^{-3}$. ← 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