1.

Bitumen of grade 60/70 means:

A. Its penetration value is 6 mm to 7 mm
B. Its penetration value is 60 cm to 70 cm
C. Its penetration value is 60 mm and softening point is 70
D. Its specific gravity is 0.6 to 0.7
Answer» B. Its penetration value is 60 cm to 70 cm


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