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Solid State Tes...

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  • Question 1
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    A solid is formed and it has three types of atoms X, Y and Z. X forms an fcc lattice with Y atoms, occupying all the tetrahedral voids and Z atoms occupy half the octahedral voids. The formula of the solid is

  • Question 2
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    The following question has four choices out of which ONLY ONE is correct.

    Which of the following fcc structures contains cations in alternate tetrahedral voids?

  • Question 3
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    Which of the following defects does ZnS show?

  • Question 4
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    Match the following:

    Column – I Column – II
    (A) Schottky defect (a) Presence of ion in the normally vacant interstitial sites
    (B) Frenkel defect (b) Silicon doped with phosphorus
    (C) Interstitial defect (c) Ion leaving its correct lattice site and occupying an interstitial site
    (D) Extrinsic conduction (d) Displacement of one positive ion and one negative ion from their positions, leaving behind a pair of holes

  • Question 5
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    Which of the following best describes the reason for flame colours of metal ions?

  • Question 6
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    Which of the following substances is/are diamagnetic?

  • Question 7
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    In which of the following types of solids is conductivity due to the presence of impurities and defects?

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