CBSE Class 12 Chemistry Solid State (4). CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
1.What is photovoltaic cell?
2.What do you mean by the term Doping?
3.What the term 12 – 16 compounds stand for?
4. What is the number of tetrahedral voids in a ccp structure of solid?
5.Crystalline solids are anisotropic in nature.comment on this statement.
6. What is the percentage efficiency of a solid whose particles are having ccp structure?
7.LiCl crystal appears to be pink in colour .Why?
8.WhenGe is doped with slight amount of In,what type of semiconductor will be formed?
9.Metal deficiency defect with extra anions in interstitial sites can’t be produced in solids.Why?
10. The electrical conductivity of semiconductors increases with increase in temperature but in case of metals conductivity decreases with rise in temp. Why?
11.The window panes seem to be thicker at the bottom in case of old buildings.what can be the reason?
12.Assign the relationship between edge length (a,b,c) and values of α,β and ϒ for tetragonal unit cell.
13.Give an example of solid which can exhibit schottky defect as well as frenkel defect.
14.Atoms of element A are occupying all the octrahedral voids while atoms of B are in 1/4thtetrahedral voids and atoms of C are arranged in hexagonal arrays .what will be the formula of the compound?
15.What is the co-ordination number of a particle in ccp structure?
16.What happens when Na vapours is passed over crystalline NaCl?
17.Ferromagnetic and ferrimagneetic solids on heating converted into paramagnetic in nature.justify the reason.
18.Gjass is assumed to be supercooledliquid.why?
19.Give an example of solid which has its structure as fluorite type structure.
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