Coal Mining - Study Mode
[#181] The curb rings are made of
Correct Answer
(C) Mild steel
[#182] In which transportation, decomposed organism and losses N 2 , O 2 and other volatile matter
Correct Answer
(D) Carbonization
[#183] How much amount of coal required to produce one tone of petrolium products
Correct Answer
(C) 2.5 tonne
[#184] If the size of the pillar is 18 × 18 m is split up in to
Correct Answer
(A) 2
[#185] The stowing efficiency in hand packing is
Correct Answer
(D) 50%