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In the context of testing bitumen, which one of the following statements is FALSE:

1. The depth of penetration of needle in the standard penetration test is measured in the units of one-tenth of millimeter
2. Softening point is measured using a ring and ball apparatus
3. Softening point is measured in the units of time
4. Ductility is measured in the units of length

Correct answer: Softening point is measured in the units of time

Solution

The statement is incorrect because the softening point of bitumen is measured in degrees Celsius, not in units of time. This measurement indicates the temperature at which the bitumen softens enough to flow.

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