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What type of substances would make bette...

What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic? Justify your answer.

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ferromagnetic
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What are paramagnetisma and ferromagnetism ? What type of substances would make batter permanent magnets, ferromagnetic or ferrimagnetic?

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MODERN PUBLICATION-SOLID STATE-REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)
  1. For tetrahedral co-ordination the radius ratio (r^(+) //r^(-))should b...

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  2. Name the crystal defect produced when sodium crystal is doped with MgC...

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  3. What is the effect of Frenkel defect on the electrical conductivity of...

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  4. What makes alkali metal halides sometimes coloured which are othersise...

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  5. How does electrical cocductivity of semi-conductors vary with temperat...

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  6. Which of following shows anti-ferromagnetism ?

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  7. Name an element with which silicon should be doped to given n-type of ...

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  8. How does electrical conductivity vary in metals with temperature?

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  9. In face -centered cubic unit cell, edge length is

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  10. Which point defect in crystals does not alter the density of the relev...

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  11. Write a point of distinction between a metallic solid and ionic solid ...

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  12. How many lattice points are there in one unit cell of each of the foll...

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  13. How many atoms are there in a unit cell of a metal crystallizing in fc...

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  14. What type of substances would make better permanent magnets, ferromagn...

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  15. What is the formula of a compound in which the element Y forms ccp lat...

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  16. What are the coordination number of Na^(+) and Cl^(-) ions in NaCl ?

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  17. The coordination number of the fcc structure for metals is

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  18. Out of NaCl and AgCl, which one shows Frenkel defect and why ?

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  19. Why does the conductivity of silicon increase upon doping with phospho...

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  20. What type of stoichiometric defecit is shoen by ZnS ?

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