Civil Engineering - UPSC Civil Service Exam Questions - Discussion

8. 

Which one of the following is the correct statement ? Penetration to know bitumen grade is measured in

[A]. one-hundredth of mm
[B]. one-tenth of mm
[C]. one-tenth of an inch
[D]. one micron

Answer: Option B

Explanation:

No answer description available for this question.

Umesh H A said: (Sep 11, 2018)  
80 grade bitumen represents. The needle has penetrated to 8mm.

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