Solid State - Online Test
Q1. Volume of unit cell occupied in face centered cubic arrangement is
Answer : Option D
Explaination / Solution:
Packing Fraction is 74%
Q2. is The radius ratio of body centred cubic structure
Answer : Option D
Explaination / Solution:
Its Coordination No. is 8.
Q3. Which of the following lattices has the highest packing efficiency?
Answer : Option B
Explaination / Solution:
Packing Efficiency is highest 74%.
Q4. Packing efficiency for simple cubic structure is
Answer : Option A
Explaination / Solution:
Simple cubic have packing efficiency of 52%.
Q5. Which among the following is an example of non – polar molecule?
Answer : Option A
Explaination / Solution:
Methane is a symmetrical.
Q6. Silicon carbide is an example of
Answer : Option B
Explaination / Solution:
SiC is a network solid.
Q7. The process by which impurity is introduced in semiconductors to enhance its conductivity is known as
Answer : Option D
Explaination / Solution:
Semiconductors are doped with impurities to enhance conductivity.
Q8. Electrical conductivity of semi conductors increases with increase in
Answer : Option A
Explaination / Solution:
Conductivity increases with temperature.
Q9. When heated to high temperature, ferromagnetic substance changes to
Answer : Option A
Explaination / Solution:
Ferromagnetic substances changes to paramagnetic substance
Q10. The property of a substance to offer no resistance to the flow of electricity at a particular temperature is known as
Answer : Option D
Explaination / Solution:
Superconductors offers no resistance to flow electricity.
