Solid State - Online Test
Q1. Which among the following is not an example of amorphous solids?
Answer : Option B
Explaination / Solution:
Quartz is not amorphous solids
Q2. Amorphous solids are also known as
Answer : Option C
Explaination / Solution:
Because they show property of flowing like liquids
Q3. Which among thThey do not show long range ordere following is not true for crystalline solid?
Answer : Option A
Explaination / Solution:
In Crystalline solids , the atomic pattern repeats itself after long distance. Therefore they have long range orders.
Q4. Which among the following is an example of network solid?
Answer : Option D
Explaination / Solution:
Carbon is network solid due to its tendency to form Catination.
Q5. How many tetrahedral voids can exist per unit cell in hexagonal close packing sphere?
Answer : Option D
Explaination / Solution:
For hcp packing Z(no. of atoms per unit cell is 6) and no. of Td voids are 2Z.
Q6. Example of ferromagnetic substance is
Answer : Option C
Explaination / Solution:
This is a Fact
Q7. Coordination number of hcp and ccp is
Answer : Option A
Explaination / Solution:
In hcp and ccp lattice, each atom is surrounded by 12 other atoms . Therefore, hcp and ccp lattice have ccordination no. 12.
Q8. Brass is an example of
Answer : Option B
Explaination / Solution:
Brass is Mettalic Crystal
Q9. What is the total number of atoms per unit cell in a face centered cubic structure?
Answer : Option C
Explaination / Solution:
In Fcc each atom at corner contributes 1 per unit cell while atoms at face centers contribute 3 to each unit cell. So Total no of atoms per unit cell is 4
Q10. The number of atoms per unit cell in a body centered cubic structure is
Answer : Option C
Explaination / Solution:
Atoms at corner contribute 1 to a unit cell and one atom is present in body center contribute 1. So total no. of atoms per unit cell is 2.
