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Practice Underground Hazards - Surface Environment, Mine Ventilation and Underground Hazards - Mining Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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Year-wise coverage for Underground Hazards. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
MCQ, numerical, multiple-select and other formats found in these papers.
Top subjects by unique question coverage.
Top topics across the included previous year papers.
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Question coverage for the most populated papers. Every active PYP paper remains listed below.
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| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| Mining Engineering (MN) 2025 | 2025 | 1 | View paper |
| Mining Engineering (MN) 2024 | 2024 | 2 | View paper |
| Mining Engineering (MN) 2023 | 2023 | 2 | View paper |
| Mining Engineering (MN) 2022 | 2022 | 2 | View paper |
| Mining Engineering (MN) 2020 | 2020 | 1 | View paper |
| Mining Engineering (MN) 2019 | 2019 | 2 | View paper |
| Mining Engineering (MN) 2018 | 2018 | 1 | View paper |
| Mining Engineering (MN) 2017 | 2017 | 3 | View paper |
| Mining Engineering (MN) 2016 | 2016 | 2 | View paper |
| Mining Engineering (MN) 2014 | 2014 | 1 | View paper |
| Mining Engineering (MN) 2013 | 2013 | 4 | View paper |
| Mining Engineering (MN) 2012 | 2012 | 4 | View paper |
| Mining Engineering (MN) 2011 | 2011 | 2 | View paper |
| Mining Engineering (MN) 2010 | 2010 | 3 | View paper |
| Mining Engineering (MN) 2009 | 2009 | 3 | View paper |
| Mining Engineering (MN) 2008 | 2008 | 1 | View paper |
| Mining Engineering (MN) 2007 | 2007 | 3 | View paper |
Practice every matching question in batches of 20, with every available option.
An underground coal mine employing 1200 persons experienced 12 roof fall injuries during the year 2005. The roof fall injury rate per 1000 persons employed during the period 2005, as per the DGMS norms, is
Cause-wise data of injuries in an underground coal mine for a five-year period is given below:
| Cause of injury | Number of injuries |
|---|---|
| Fall of roof | 27 |
| Fall of person | 22 |
| Rope haulage | 17 |
| Explosives | 5 |
| Other causes | 4 |
A coolant is a desirable component in the design of a Self-Contained Breathing Apparatus since
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
Assertion : Both intake and return side stoppings must be closed simultaneously in the event of sealing off a coal mine panel with explosion hazard following a fire.
Reason : By continuously ventilating the area till simultaneous closure of the stoppings, the possibility of an explosion hazard due to gas build-up is avoided.
For electric signaling systems in underground coal mines, the statement that is NOT true is
The type of fire extinguisher that must NOT be used in case of fire in an electric substation located in an underground metal mine is
A sudden increase of CO incidence has occurred in an underground mine section. A man at point A starts to run out to the main intake of the mine where he will be safe. Refer figure below for the mine section and the logic diagram. The probabilities that he will successfully cross the gallery sections A, B, C, D, E, and F are 0.9, 0.8, 0.7, 0.8, 0.7 and 0.9 respectively. The probability that he will successfully reach the main intake is
| Mine gas | Principal constituent | ||
|---|---|---|---|
| P | Stink damp | 1 | CO |
| Q | White damp | 2 | H2S |
| R | Black damp | 3 | CH4 |
| S | Fire damp | 4 | CO2 |
| Age group of mine workers | Age-specific injury rate (per 1000 persons) | Age-specific population in the mine |
|---|---|---|
| 18 – 32 | 1.8 | 1000 |
| 33 – 46 | 2.5 | 500 |
| 47 – 60 | 4.5 | 300 |
In an experiment to study coal dust explosibility, it is found that at least 3.0 g of limestone dust should be added to a sample of 2.0 g of coal dust to ensure that propagation of flame does not take place. The explosibility factor of coal dust is
| Rescue apparatus | Characteristic |
|---|---|
| P. Draeger BG-4 | 1. Open circuit chemical oxygen self-rescuer |
| Q. MSA IW-65 | 2. Filter type self-rescuer |
| R. Draeger Pulmotor | 3. Self-contained breathing apparatus |
| S. Oxyboks | 4. Resuscitation apparatus |
Showing 20 of 37 questions