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11.
Glass is a _______.
- A.microcrystalline solid
- B.super cooled liquid
- C.gel
- D.polymeric mixture
- Answer
- Report
Answer : [B]
12.
Amorphous solids _______.
- A.possess sharp melting points
- B.undergo clean cleavage when cut with knife
- C.do not undergo clean cleavage when cut with knife
- D.possess orderly arrangement over long distances
- Answer
- Report
Answer : [C]
13.
Which of the following is NOT a characteristic of a crystalline solid?
- A.Definite and characteristic heat of fusion.
- B.Isotropic nature.
- C.A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal.
- D.A true solid
- Answer
- Report
Answer : [B]
14.
Which of the following statements is TRUE?
- A.Both crystalline and amorphous solids are isotropic.
- B.Both crystalline and amorphous solids are anisotropic.
- C.Crystalline solids are isotropic and amorphous solids are anisotropic.
- D.Crystalline solids are anisotropic and amorphous solids are isotropic.
- Answer
- Report
Answer : [D]
15.
Most crystals show good cleavage because their atoms, ions or molecules are _______.
- A.weakly bonded together
- B.strongly bonded together
- C.spherically symmetrical
- D.arranged in planes
- Answer
- Report
Answer : [D]
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