This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 1 Solid State – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 1 Solid State Quiz 40 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Sulfur exists in two polymorphic forms ..... and ..... A) Rhombic and monoclinic. B) Rhombic and triclinic. C) Hexagonal and triclinic. D) Hexagonal and monoclinic. Show Answer Correct Answer: A) Rhombic and monoclinic. 2. Which of the following statements is not true about crystalline solids? A) Polar molecular solids have higher enthalpies of vaporization than those of non polar molecular solids. B) Graphite, though covalent solid is a good conductor of electricity. C) Ionic Solids are conductors in molten state. D) Non polar molecular solids have London forces between the constitutions and have higher melting points than polar molecular solids. Show Answer Correct Answer: D) Non polar molecular solids have London forces between the constitutions and have higher melting points than polar molecular solids. 3. The relationship between the atomic radius (r) and edge length (a) of a simple, fcc, bcc cubic unit cell will be respectively A) $\frac{a}{2}$ $\frac{\sqrt{2}a}{4}$ $\frac{\sqrt{3}a}{4}$. B) $\frac{a}{2}$ $\frac{\sqrt{3}a}{4}$ $\frac{\sqrt{2}a}{4}$. C) $\frac{\sqrt{2}a}{4}$ $\frac{\sqrt{3}a}{4}$ $\frac{a}{2}$. D) $\frac{\sqrt{3}a}{4}$ $\frac{a}{2}$ $\frac{\sqrt{3}a}{4}$. Show Answer Correct Answer: A) $\frac{a}{2}$ $\frac{\sqrt{2}a}{4}$ $\frac{\sqrt{3}a}{4}$. 4. A compound formed by elements X and Y crystallizes in a cubic structure in which atoms X are at the corners of the cube and atoms Y are at the face-centers. The formula of the compound is A) X3Y. B) XY. C) XY2. D) XY3. Show Answer Correct Answer: D) XY3. 5. What type of defect can arise when a solid is heated? A) Vacancy defect. B) Interstitial defect. C) Metal excess defect. D) Impurity defect. Show Answer Correct Answer: A) Vacancy defect. 6. The coordination number of two dimensional SCP= ..... A) 4. B) 6. C) 12. D) 8. Show Answer Correct Answer: A) 4. 7. Some of the very old glass objects appear slightly milky instead of being transparent. Why? A) Because glass is an amorphous solid. B) Due to ageing of glass. C) Due to some crystallization in that region. D) Due to collection of some dirt inside the glass. Show Answer Correct Answer: C) Due to some crystallization in that region. 8. What is the attractive force present in ice? A) Ionic bond. B) Covalent bond. C) Hydrogen bond. D) Coordinate bond. Show Answer Correct Answer: C) Hydrogen bond. 9. For which off the following applications DC motors are still preferred? A) High operation. B) Variable speed drive. C) High starting torque. D) Reversibility. Show Answer Correct Answer: B) Variable speed drive. 10. Which of the following statements about crystals is incorrect? A) The shape of a crystal is dependent on the chemical conditions under which it formed. B) There are seven large groups of crystal geometries or crystal systems. C) There are many geometric planes in a single crystal. D) The atomic structure of a crystal defines it's geometric shape. E) The shape of a crystal is independent of the physical conditions under which it formed. Show Answer Correct Answer: E) The shape of a crystal is independent of the physical conditions under which it formed. 11. The wavelength of X-rays is given by A) $\lambda$ = C/V. B) V = $\lambda$ C. C) C = $\lambda$ V. D) None of the above. Show Answer Correct Answer: A) $\lambda$ = C/V. 12. The radius ratio for tetrahedral sites is closest to: A) 0.225. B) 0.414. C) 0.155. D) 0.732. Show Answer Correct Answer: A) 0.225. 13. Number of atoms per unit cell in a Face Centered Cubic lattice A) 4. B) 1. C) 2. D) 6. Show Answer Correct Answer: A) 4. 14. The selection of an electric motor for any application depends on which of the following factors? A) Electrical characteristics. B) Mechanical characteristics. C) Size and rating of motors. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Amorphous solids have ..... structure. A) Regular. B) Linear. C) Irregular. D) Dendritic. Show Answer Correct Answer: C) Irregular. 16. What is the significance of Van der waal's constant 'a' A) Measure of effective size of the gas molecules. B) Measure of the magnitude of the attractive forces among the molecules of the gas. C) Measure of deviation from ideal behavior. D) Continuity of state. Show Answer Correct Answer: B) Measure of the magnitude of the attractive forces among the molecules of the gas. 17. Ward-Leonard controlled dc drives are generally used for A) Light duty excavators. B) Medium duty excavators. C) Heavy duty excavators. D) All of the above. Show Answer Correct Answer: C) Heavy duty excavators. 18. What is the DC load line and how is it analyzed? A) The DC load line is used to measure AC circuit performance. B) The DC load line is a graphical tool used to analyze the operating point of nonlinear devices in DC circuits. C) The DC load line represents the voltage across a capacitor in a circuit. D) The DC load line is a method for calculating power loss in resistors. Show Answer Correct Answer: B) The DC load line is a graphical tool used to analyze the operating point of nonlinear devices in DC circuits. 19. Which of the following describes a crystal? A) A homogeneous solid. B) Has a geometrically regular form. C) Has a highly ordered microscopic structure. D) All of the options describe crystals. Show Answer Correct Answer: D) All of the options describe crystals. 20. What impact does Solid-State Storage have on computing? A) Improved battery life. B) Slower system boot times. C) More heat generation. D) Increased noise during operation. Show Answer Correct Answer: A) Improved battery life. 21. What will happen, with the increase in speed of a DC motor? A) Back emf increase but line current falls. B) Back emf falls and line current increase. C) Both back emf as well as line current increase. D) Both back emf as well as line current fall. Show Answer Correct Answer: A) Back emf increase but line current falls. 22. The colours of some otherwise colourless compounds are due to. A) Metal deficiency defect. B) Schottky defect. C) Frenkel defect. D) Metal excess defect (F-Centres). Show Answer Correct Answer: D) Metal excess defect (F-Centres). 23. Column I. Column II1.ice. A.Mol ..... crystal2.solid CO2. B.H2 bonded str ..... 3.Graphite. C.Covalent solid4.Silica. D.Insulator A) 1-B;2-A;3-C;4-D. B) 1-D;2-A;3-C;4-B. C) 1-B;2-C;3-A;4-D. D) 1-D;2-C;3-A;4-B. Show Answer Correct Answer: A) 1-B;2-A;3-C;4-D. 24. Glucose, urea is an example of ..... A) Polar molecular solids. B) Non polar molecular solids. C) Hydrogen bonded molecular solids. D) Covalent solid. Show Answer Correct Answer: C) Hydrogen bonded molecular solids. 25. Whenever a current carrying conductor is placed in a magnetic field, the conductor experiences a A) Torque. B) Force. C) Attraction. D) Energy. Show Answer Correct Answer: B) Force. ← 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