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How many of the following are covalent network solids?

S8, Bronze, SiO2, Diamond, ZnSO4, Si, AlN, SiC, CO2.

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Important Questions on Solid State

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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 19
How many number of atom effectively present in a cubic formed by arrangement of eight B.C.C unit cell ?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 20

How many spherical balls of radii 2cm can be placed completely inside a cubical box of edge =8cm?

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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 25
In a crystalline solid having molecular formula A2B anions B are arranged in cubic close packed lattice and cations (A) are equally distributed between octahedral and tetrahedral voids.
(i) What percentage of octahedral voids are occupied?
(ii) What percentage of tetrahedral voids are occupied? Report your answer ((i)-(ii)).
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 29
A metal crystallises in bcc. Find the % fraction of edge length not covered and also % a fraction of edge length converted by the atom is:
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 30
Select the correct statements about three dimensional HCP system :
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 34
Which of the following is/are correct?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-2>Q 35
Which of the following statements are true about semiconductors?
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Alpha Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>Exercise-3>Q 3
In a solid AB having the NaCl structure, A atoms occupies the corners of the cubic unit cell. If all the face- centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is_______.