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The process of adding impurities to a cr...

The process of adding impurities to a crystalline substance so as to change its properties like conductivity etc. is called…..

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PRADEEP-STATES OF MATTER: SOLID MATTER-TEST YOUR GRIP (FILL IN BLANKS)
  1. Zinc blede has ……. Arrangement of S^(2-) ions whereas wurtzite has ……...

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  2. Wurtzite has …… formula units per unit celll wherease zinc blende has ...

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  3. Due to Frenkel defect, the density of the crystal, …….. Wherease due t...

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  4. NaCl crystals have some yellow colour. This is due to the presence of ...

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  5. The process of adding impurities to a crystalline substance so as to c...

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  6. If arsenic is added as impurity to silicon, the type of semiconductor ...

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  7. If aluminium is added as imourity to silicon, the type of semiconducto...

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  8. Frenkel defect is shown by crystals having coordination number and di...

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  9. Semiconductors posses conducitivity in the range ……. To…….

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  10. The band formed atomic orbitals of lower energy is called….. While tha...

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  11. If there is a large energy gap between the filled valance band and emp...

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  12. The electrical conductivity of semiconductors ……. With increase of te...

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  13. Pure substances which show conducitivity similar to that of silicon an...

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  14. As regards magnetic behaviour , TiO(2) is ……..

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  15. Substances which show permanent magnetism even in the absence of magne...

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  16. Antiferromagnetic subtance have….. Magnetic moment.

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  17. Magnetite is …….as regards magnetic behaviour .

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  18. the electricity produced in a polar crystals when mechanical stress is...

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  19. In terms of dielectric properties, barium titanate is……

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  20. The characteristic temperature of a ferromagnetic substance above whic...

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