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What are ferromagnetic substances?
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Mention two properties that are common to both hcp and ccp lattices.
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How does electrical conductivity of a semiconductor change with temperature? Why?
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What is the unit cell?
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Which of the three types of packing used by metals makes the most efficient use of
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What are the types of particles in each of the four main classes of crystalline solids ?
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Pb has fcc structure with edge length of unit cell 495 pm. Radius of Pb atom is
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The coordination number of atoms in bcc crystal lattice is a. 2 b. 4 c. 6 d. 8
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In Frenkel defect a. electrical neutrality of the substance is changed
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