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Class 12 Chemistry: Solid State
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MCQs on solid state characteristics, amorphous solids, crystalline solids and its classification, crystal lattices, unit cells, close packed structures, packing efficiency, unit cells calculations, solids imperfections, solid state electrical and magnetic properties.
 

Class 12 Chemistry: Solid State
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25 Questions

1. Aluminium crystallises in a face-centred cubic lattice. The edge length of the unit cell of aluminium is 4.05 x 10-10m. What is the density of aluminium? (Atomic mass of Al=27)
2. What is the radius of a metal atom if it crystallizes with body-centered lattice having a unit cell edge of 333 Pico meter?
3. A compound is formed by atoms of elements A occupying the corners of the unit cell and an atom of element B present at the center of the unit cell. Deduce the formula of the compound.
4. Gold (atomic mass 197 u) crystallises in a face-centred unit cell. What is its atomic radius if the edge length of the gold unit cell is 0.407 x 10-9m?
5. _________ is the basic repeated structural unit of a crystalline solid.
6. Which among the following statements is correct?
7. Which of the following is an orderly collection of positive ions surrounded and held together by a sea of electrons?
8. In the simple cubic cell, each corner atom is shared by __________
9. The unit cell with a≠b≠c and α=γ=90, β≠90 refers to __________crystal system.
10. The molecules in polar molecular solid are held together by __________
11. If the aluminum unit cell exhibits face-centered behavior then how many unit cells are present in 54g of aluminum?
12. If a crystal lattice has 6 closed-pack spheres, what the number of tetrahedral voids in the lattice?
13. A substance containing one band completely filled with electrons and other band completely empty, but with a possibility of the empty band becoming populated, behaves as a _________
14. How many parameters are used to characterize a unit cell?
15. What are the percentages of free space in a CCP and simple cubic lattice?
16. In which type of point defect are the cations and anions absent in stoichiometric proportions?
17. Polar molecular solids are _________
18. Schottky defects are observed in solids with cations and anions of similar sizes. Which of the following compounds, therefore, is NOT likely to have a Schottky defect?
19. An element with cell edge of 288 pm has a density of 7.2 g cm-3. What type of structure does the element have if it's atomic mass M=51.8 g mol-1?
20. Solid state is denser than the liquid and gaseous states of the same substance. Which of the following is an exception to this rule?
21. Which one of the following are the dimensions of cubic crystal?
22. What is the temperature, above which a ferromagnetic substance shows no ferromagnetism called?
23. Which of the following consists of either atoms or molecules formed by non polar covalent bonds?
24. In ______ constituent particles are closely packed leaving the least amount of vacant spaces.
25. Arrange the types of arrangement in terms of decreasing packing efficiency.

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