Miscellaneous In Mining — Part 1 MCQs with Explanations

Booster fans in mining are typically used in the "return" or "return airway." In underground mining operations, air is circulated to provide fresh air to the working faces where miners are actively mining. After the air has traveled through the workings, it becomes contaminated with dust, gases, and other pollutants. This used air is then directed back to the surface through the return airway. Booster fans are installed in the return airway to assist in moving this used air efficiently back to the surface for processing and purification. These fans help maintain a safe and healthy working environment for miners by ensuring the proper ventilation of the underground workings. So, the correct answer is Option B: Return . Booster fans are generally used in the return airway of underground mining operations.

Option A: Silicons This option is incorrect. "Silicons" does not refer to any disease caused by the inhalation of silica particles. It might be a confusion with "silicosis." However, "Silicons" itself is not a medical term related to respiratory diseases. Option B: Sidorosis This option is incorrect. "Sidorosis" is actually a typo or incorrect term. The correct term is "silicosis," which is the disease caused by the inhalation of silica particles. The correct spelling should be "silicosis." Option C: Asbestosis This option is incorrect. Asbestosis is a chronic lung disease caused by inhaling asbestos fibers. It is not related to silica particles. Option D: None This option is incorrect. There is a specific disease caused by the inhalation of silica particles, which is "silicosis," although it is not listed correctly in the provided options. Conclusion: The correct term for the disease caused by inhalation of silica particles is "silicosis." However, given the provided options, there appears to be a mistake. The intended correct answer should be "silicosis," making Option B: Sidorosis a typographical error for the correct answer.

0.89 is the correct answer to “A mine workers inhales normal air, where as exhaled air contains 16 - 65% O 2 and 3.82% CO 2 . The respiratory quotient of breathing for the worker is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Krypton is the correct answer to “The bulb of old ham lead acid battery is filled with . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

CO2 + H2O is the correct answer to “When methane is burnt two gasses are formed with a blue flame. Name the gases.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

1 micron is the correct answer to “The greatest danger of pneumo coniosis in the size of dust is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

15 - 20 is the correct answer to “For lighting arrangements in depillaring areas in deg.2 and 3 gassy mines having fire cluster of . . . . . . . . cap lamps placed on suitable stand, inaddition to cap lamps for individual workmen.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

2 is the correct answer to “Normal life of lead acid batter is . . . . . . . . Years”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

110 is the correct answer to “The power can be used at voltage not exceeding . . . . . . . . V in bulbs/lights.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Middle section, Lower section is the correct answer to “During assembly the upper section is assembled with the . . . . . . . . section of flame safety lamps the combined assembly then screwed in to . . . . . . . . section and locked magnetically.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Velocity slow is the correct answer to “CaCl 2 and Calsolene oil are chemicals which are used to keep the dust.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

5 is the correct answer to “The supervisory staff in coal mines therefore required to undergo periodical eye testing once in . . . . . . . . years.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Non-fibrosis producin is the correct answer to “Anthra cosis comes under inorganic dust producing group of . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

1.7 m/s is the correct answer to “The maximum air velocity at the face is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

GL-50 is the correct answer to “The type of flame safety lamps is permitted by DGMS for gas testing in Deg.1 and Deg.2 gassy mines of coal.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Inundation is the correct answer to “Sudden irush of water into active workings of the mine.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

1975 is the correct answer to “Worst disaster caused by inundetion of mines was at chasnala colliery in Bihar in . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

16.09 is the correct answer to “Find the H.P assistancedue to NVP if the w.g is 12.07 mm of wg and air passing in DC shaft is 100m 3 /sec.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

0.5; 1m is the correct answer to “The thickness and height of temporary dam is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

MSCP × 4π is the correct answer to “Lumens emitted by a lamp . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Oorgam is the correct answer to “In which of the following Indian mines first refrigeration plant was installed in”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

10 - 20 is the correct answer to “Modern incandescent lamps have luminous efficiency is from . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

6/1975 is the correct answer to “Provision of stone dust barrier has been given in which of the following circulars.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Lux is the correct answer to “Illumination of a surface is measured in . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Flurorescent lamp is the correct answer to “Glare is reduced with the use of . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

2 is the correct answer to “The lead acid battery consists of . . . . . . . . cells.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Glare is the correct answer to “Fluorescent tubes reduces . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Bypass valve is the correct answer to “In self contained O 2 breathing apparatus the weaver can take more O 2 than gets through the circuit by the . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Sodium phosphate is the correct answer to “The cooling agent in protosorb breathing apparatus is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

1.7 kg is the correct answer to “The weight of fuel oil in GL-60 flame safety lamp.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

GL-5, GL-50, GL-60 is the correct answer to “The company J. K. Dey and sons manufactures of three types of flame safety lamps are . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Drillers is the correct answer to “In the metal mines . . . . . . . . persons are worstly affected by dust.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

200 L is the correct answer to “In water barrier must contain atleast . . . . . . . . of water per sq.m. of road way cross section.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

Lux is the correct answer to “The unit of illumination is S. I unit.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

No is the correct answer to “Can we use the defective, or repaired components of flame safety lamp.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

2 is the correct answer to “No. of washers employed to make outer glass assembly by air tight.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

1.25 is the correct answer to “The minimum average standards of lighting in main junctions in underground in lumens/sq. ft.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

5 mg/m3 is the correct answer to “Dustiness of a place may be considered at dustyness content of . . . . . . . . the air is moderatly dusty as per Russian text book.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

0.25 is the correct answer to “The co. efficient of adhesion is, if the surface is dry and free of sand.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.

ESSO solvent No. 1425 is the correct answer to “The fuel recommended to carry the percentage test by flame safety lamp.”. This question is standard in competitive examination syllabi for Miscellaneous In Mining.