The Solid State

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Question

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Question 1 : Which one of the following is non-crystalline or amorphous?
1. Glass
2. Salt
3. Graphite
4. Diamond
Answer
8668

Question 2 : NaCl typecrystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
1. high pressure
2. high temperature
3. low temperature and low pressure
4. high temperature and high pressure
Answer
8669

Question 3 : How many chloride ions are surrounding sodium ion in sodium chloride crystal ?
1. 2
2. 4
3. 6
4. 8
Answer
8670

Question 4 : In NaCl structure
1. only octahedral sites are occupied
2. only tetrahedral sites are occupied
3. neither octahedral nor tetrahedral sites are occupied
4. all octahedral and tetrahedral sites are occupied
Answer
8671

Question 5 :

In Zinc blende structure

1. zinc ions occupy half of the tetrahedral sites
2. each S^2- ion is surrounded by six Zn²⁺ ions
3.  it has fee structure
4. each Zn^2- ion is surrounded by six sulphide ions
Answer
8672