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How is it possible to enhance the electr...

How is it possible to enhance the electrical conductivity to an intrinsic semiconductor?

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The electrical conducitivity of an intrinsic semiconductor can be increased by means of introducing a small amount of suitable impurity into its crystal.
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CHHAYA PUBLICATION-SOLID STATE-VERY SHORT ANSWER TYPE
  1. "Crystalline solids are anisotropic" - What does this statement mean?

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  2. Apart from the metallic lustre, mention one property by which one can ...

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  5. Why are gases and liquids considered as fluid?

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  6. How can a crystalline solid be converted into an amorphous solid?

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  7. What are voids or holes in a crystal?

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  8. How one and two-dimensional lattices are formed?

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  11. Classify the following crystalline solids as molecular ionic, covalent...

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  15. Draw and mention the shape of the hole generated in a hexagonal close-...

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  17. Is the shape of a tetrahedral void tetrahedral? If not, why is it so c...

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  18. Why does LiCl crystal containing excess lithium ions show pink colour?

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