A coal dust explosion will be classified as ‘strong’, based on the explosibility index, when the index is:
A. 0.1 to 0.5
B. 0.1 to 1
C. 10 to 20
D. 1 to 10
Answer:D
A coal dust explosion will be classified as ‘strong’, based on the explosibility index, when the index is:
A. 0.1 to 0.5 B. 0.1 to 1 C. 10 to 20 D. 1 to 10