1. Which of these is not a state of matter?
a. Solid
b. Liquid
c. Gas
d. Air
2. Which among the states of matter have its molecules arranged tightly or closely with each other?
a. Solid
b. Liquid
c. Gas
d. Air
3. The property of liquid which allows it to flow.
a. Viscosity
b. Surface Tension
c. Density
d. Fluidity
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