Drilling And Blasting - Study Mode
[#356] If the $$frac{{CO}}{{{O_2}}}$$ deficiency ratio is 3% or more it indicates . . . . . . .
Correct Answer
(D) Active fire
[#357] Main purpose of lung governed valve.
Correct Answer
(A) Automatically adjust O 2 feed by lungas required by weaver
[#358] The example for low density explosive
Correct Answer
(C) Black powder
[#359] Which of the following is the oxidizing agent in an explosive?
Correct Answer
(C) ammonium nitrate
[#360] Reaction between cellulose compounds with nitric acid yeilds.
Correct Answer
(C) Collodin cotton