Kinematic viscosity is a measure of resistance to the flow of molten bitumen under gravity.
Softer grade bitumen possesses higher softening point than hard grade bitumen.
Flash point of bitumen is the lowest temperature at which application of a test flame causes vapours of the bitumen to catch an instant fire in the form of flash under specified test conditions.
Ductility test is carried out on bitumen to test its adhesive property and ability to stretch.
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The Correct Option isB
Solution and Explanation
The correct option is (B): Softer grade bitumen possesses higher softening point than hard grade bitumen.
