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Lecture 4 : Calculation involving unit cell dimension density of unit cell ; Imperfections in solids ; Electrical properties

  • Chapter -1 The Solid State Assignments 1

    Concentration terms such as mass percentage, ppm, mole fraction and molality
    are independent of temperature, however molarity is a function of temperature.
    Explain.

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  • Chapter -1 The Solid State Assignments 2

    With the help of a labelled diagram show that there are four octahedral voids
    per unit cell in a cubic close packed structure.

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  • Chapter -1 The Solid State Assignments 3

    Explain why does conductivity of germanium crystals increase on doping
    with galium.

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  • Chapter -1 The Solid State Assignments 4

    Why does the electrical conductivity of semiconductors increase with rise in
    temperature?

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  • Chapter -1 The Solid State Assignments 5

    Why does white ZnO (s) becomes yellow upon heating?

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  • Chapter -1 The Solid State Assignments 6

    Why is FeO (s) not formed in stoichiometric composition?

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  • Chapter -1 The Solid State Assignments 7

    What is a semiconductor? Describe the two main types of semiconductors and contrast their conduction mechanism

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  • Chapter -1 The Solid State Assignments 8

    Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) body-centred cubic and (iii) hexagonal close-packed lattice?

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  • Chapter -1 The Solid State Assignments 9

    Classify the following solids in different categories based on the nature of intermolecular forces operating in them:

    Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphide, graphite, rubidium, argon, silicon carbide.

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    • Description:-

    Lecture 4 :
    Today, we will discuss the next three topics of this chapter, i.e; Calculation involving unit cell dimension density of unit cell ; Imperfections in solids ; Electrical properties from    Chapter -1 The Solid State
    OBJECTIVES:
    1: Know every about solid state through these topics i.e; Calculation involving unit cell dimension density of unit cell ; Imperfections in solids ; Electrical properties
    Important Tip:
     This lecture about Chapter -1 The Solid State is base for the further chapters. These topics help in many ways as to understand the and how we can use them. It help you in further studies also.Please go through the topic, their notes. Properly do the assignments, watch videos of the concerned topics. If you any doubt about any topic/point please submit it in the discussion section... it will be answered as soon as possible.
    After all of this... when you fell confident about the particular topic/chapter then take the quiz.

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