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Lithium borohydride crystallizes in an o...

Lithium borohydride crystallizes in an orthorhombic system. With four molecules per unit cell. The unit cell dimensions are `a = 6.8 A^@, b = 4.4 A^@` and `c = 7.2 A^@`. If the molar mass is 21.76, calculate the density of a crystal.

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The correct Answer is:
`0.67 g cm^(-3)`
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KUMAR PRAKASHAN-THE SOLID STATE-SECTION - E (MULTIPLE CHOICE QUESTIONS)(MCQs ASKED IN BOARD EXAMS)
  1. Lithium borohydride crystallizes in an orthorhombic system. With four ...

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  2. Which of the following solids has highest conductivity of heat and ele...

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  3. The space between valence band and conduction band is called.....

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  4. Diamond has fcc crystal structure in which each carbon atom is attache...

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  5. In NaCl lattice structure if one of the sodium ion is removed from cor...

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  6. The defect due to which crystal of NaCl shows yellow colour is

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  7. Which of the following substances when heated loses ferrimagnetism and...

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  8. Which of the following is the unit cell dimensions of K2Cr2O7 ?

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  9. What is the total volume of atom present in body centered unit cell ha...

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  10. How many defects exists in the arrangement of constituent particles of...

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  11. Which defect creates when some P atom is added to Si ?

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  12. Which of the following is diamagnetic ?

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  13. Which of the following compound has highest melting point ?

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  14. How many number of tetrahedral voids in a closed packed structure havi...

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  15. Which of the following is correct distance of edge in crystal unit in ...

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  16. Which of the following is correct statement for 'Interstitial defect'?

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  17. A solid has a structure in which "W" atoms are located at the corner o...

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  18. Which of the oxide shows appearence like metallic copper?

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  19. Which is the correct for radius of atom in ccp unit cell?

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  20. F-centres are

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  21. In a fcc lattice, the number of neighbours for a given lattice point i...

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