Q481
Open questionDeep coal mines lie from surface in India.
Select an option to see the answer and solution.
Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
911
Questions
25/46
Page
Pick an option on a question to see the right answer and solution.
Q482
Open questionWhich of the following is added as sensitizers in explosive?
Select an option to see the answer and solution.
Q483
Open questionThe pressure inside a sealed vessel shown by a manometer called
Select an option to see the answer and solution.
Q484
Open questionThe formula calculating equivalent orifica is
Select an option to see the answer and solution.
Q485
Open questionDust supression by water has one of the following disadvantage.
Select an option to see the answer and solution.
Q486
Open questionAlways the rescue operations commences from . . . . . . . . in a mine.
Select an option to see the answer and solution.
Q487
Open questionThe period which lapses between the time when the coal is subjected to conditions to self heating and the time of indications of heating called . . . . . . . .
Select an option to see the answer and solution.
Q488
Open questionA gallery in the process of being driven.
Select an option to see the answer and solution.
Q489
Open questionThe specific gravity of gelatinous explosives, which sink in water is more than
Select an option to see the answer and solution.
Q490
Open questionWeight of self contained breathing apparatus of proto mark V . . . . . . . . in kg of 1 hr duration.
Select an option to see the answer and solution.
Q491
Open questionThe example for stabilizers.
Select an option to see the answer and solution.
Q492
Open questionFor breaking hard rock and brittle rock cut pattern employed is . . . . . . . .
Select an option to see the answer and solution.
Q493
Open questionMining regulations are stringent in inspection of . . . . . . . .
Select an option to see the answer and solution.
Q494
Open questionThe formule for air power in SI unit is
Select an option to see the answer and solution.
Q495
Open questionThe person in each inhalation inspires about . . . . . . . . litres of air of which he consumes about . . . . . . . . cc of oxygen so that with breaths per min.
Select an option to see the answer and solution.
Q496
Open questionIt is given in the statute that when two working places below ground have approached within A metre of each other, the Shotfirer shall fire in any of the two faces only. A is given by
Select an option to see the answer and solution.
Q497
Open questionThe O2 needed for breathing is produced by . . . . . . . . in chemical O2 breathing apparatus. AVER/SAR-30.
Select an option to see the answer and solution.
Q498
Open questionWhich type of fan produce more noise . . . . . . . .
Select an option to see the answer and solution.
Q499
Open questionPower of ventilationis proportional to
Select an option to see the answer and solution.
Q500
Open questionThe sources of leakage of air in a mine are
Select an option to see the answer and solution.