Solid State
Maharashtra Board · Class 12 · Chemistry
Most important questions from Solid State for Maharashtra Board Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which of the following properties are characteristic of amorphous solids?
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Irregular arrangement of particles, Isotropic properties, Gradual softening on heating
Amorphous solids have randomly arranged particles, show same properties in all directions (isotropic), and soften gradually over a temperature range rather than having sharp melting points.
What is the coordination number in a hexagonal close-packed (hcp) structure?
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12
In hcp structure, each sphere is surrounded by 12 nearest neighbors: 6 in the same layer, 3 above, and 3 below, giving a coordination number of 12.
Which of the following are characteristics of n-type semiconductors?
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Doped with Group 15 elements, Has excess electrons in conduction band, Electrons are major charge carriers
N-type semiconductors are formed by doping Si or Ge with Group 15 elements (P, As, Sb) which provide extra electrons, making electrons the major charge carriers.
What is the packing efficiency of a face-centered cubic (fcc) structure?
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74%
FCC structure has the highest packing efficiency of 74%, meaning 74% of space is occupied by atoms and 26% is void space.
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