E-PolyLearning

516. These are amorphous solids except
a. Rubber
b. Plastic
c. NaCl
d. Glass
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Answer: (c).NaCl

517. The molecules and atoms of solids have energy
a. High
b. Moderate
c. Least
d. None of above
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Answer: (c).Least

518. Based on their structural features, solids can be divided into classes
a. Two
b. Three
c. Four
d. Five
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Answer: (a).Two

519. Molecules of gases are in constant state of motion
a. Random
b. Vibrational
c. Rotational
d. Translational
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Answer: (a).Random

520. The states of matter are
a. Two
b. Three
c. Four
d. Five
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Answer: (c).Four