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6.
_______ is a crystalline solid.
- A.Glass
- B.Tar
- C.Plastic
- D.Sugar
- Answer
- Report
Answer : [D]
7.
Which of the following properties of a crystalline solid changes with change of direction?
- A.refractive index
- B.electrical conductance
- C.electrical resistance
- D.all of these
- Answer
- Report
Answer : [D]
8.
Amorphous solids are _______.
- A.super cooled solids
- B.super cooled gases
- C.super cooled liquids
- D.All of these
- Answer
- Report
Answer : [C]
9.
Which of the following is an amorphous solid?
- A.Graphite (C)
- B.Quartz glass (SiO2)
- C.Chrome alum
- D.Silicon carbide (SiC)
- Answer
- Report
Answer : [B]
10.
Which of the following statements about amorphous solids is INCORRECT?
- A.They melt over a range of temperature.
- B.They are anisotropic.
- C.There is no orderly arrangement of particles.
- D.They are rigid and incompressible.
- Answer
- Report
Answer : [B]