Metal Mining MCQ

Test your knowledge with important Metal Mining MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Metal Mining MCQs at Bissoy

• Compressibility of sand fill by hydraulic stowing is . . . . . . . .
  ক

  10 - 15%

  খ

  15 - 20%

  গ

  20 - 30%

  ঘ

  None
• The vertical distance between two levels called as . . . . . . . .
  ক

  Length of back

  খ

  Level interval

  গ

  Stope level

  ঘ

  None
• Mineral hoisting in one lift can be done upto the depth not exceeding . . . . . . . . meters.
  ক

  1800

  খ

  2400

  গ

  1500

  ঘ

  3000
• The method of drop raising is an improvement over the method of raising through . . . . . . . .
  ক

  Open

  খ

  Jora

  গ

  Long hole

  ঘ

  Compartment
• The method employed, if the ore body is strong steeply dipping with strong host rock.
  ক

  Room and pillar

  খ

  Square set

  গ

  Sub level

  ঘ

  Cut and fill
• Alimak raise climber introduced in India first time in the year . . . . . . . .
  ক

  1970

  খ

  1971

  গ

  1972

  ঘ

  1973
• Grizzly is used in ore bin to prevent.
  ক

  Falling of ore

  খ

  Bigger size ore from entering the bin

  গ

  Spillage of ore

  ঘ

  Loading of skip
• The stoping method selected, where ore body is thick veins type ore and walls are strong and steeply dipping ore i.e. footwall steeper than angle of repose of broken ore is . . . . . . . .
  ক

  Open stoping

  খ

  Shrinkage stoping

  গ

  Cut and fill

  ঘ

  Sub level stoping
• If the stoping started on eiqhter side of rise winze connection called . . . . . . . .
  ক

  Single stoping

  খ

  Double stoping

  গ

  Multiple stoping

  ঘ

  Back stoping
• The support in shrikage stoping is . . . . . . . .
  ক

  Insitu pillar

  খ

  Broken are

  গ

  Timber mat

  ঘ

  None
• The ring drilling and blasting employed in this stoping.
  ক

  Breast

  খ

  VCR

  গ

  Conventional sublevel

  ঘ

  Cut and fill
• Raise driving by use of jora hoist to drive mechanised raising upto . . . . . . . . m long raises.
  ক

  50

  খ

  70

  গ

  80

  ঘ

  100
• Ore grade from which revenue from the recoverable reserves exactly equals to the cost of mining, treatment and marketing is called . . . . . . . .
  ক

  Cut off grade

  খ

  Average grade

  গ

  Break even grade

  ঘ

  None
• Excess pore pressure in backfill material is a cut and fill stope leads to . . . . . . . .
  ক

  Loss of shear resistance to fill

  খ

  Reductionin strength of the wall rock

  গ

  Enhance bearing strength to fill

  ঘ

  Prevents of progressive failure of crown pillar
• The deposit of iron ore in India is about . . . . . . . . % of the world.
  ক

  5

  খ

  10

  গ

  15

  ঘ

  20
• The foot wall shaft cross cuts are drawn to intersect the ore body and raises are made to connect the cross cuts; in under ground. The top of the raises are widened, the method of extraction is . . . . . . . .
  ক

  Open under hand stopin

  খ

  Open over hand stoping

  গ

  u/g glory hole

  ঘ

  Breast stoping
• In this mining method, in which masses, panels or block of ore are under cut to induce caving, permitting the broken ore to be drawn off below.
  ক

  Sub level

  খ

  Block caving

  গ

  Integral caving

  ঘ

  Top slicing
• The most precise and fast collection of samples, the method is . . . . . . . . in u/g.
  ক

  Channel

  খ

  Chip

  গ

  Drill

  ঘ

  Wagon
• Costliest stoping method is . . . . . . . .
  ক

  Cut and fill

  খ

  Square set

  গ

  Sub level

  ঘ

  Block caving
• The first or lowest slice often referred as . . . . . . . .
  ক

  Back stope

  খ

  Breast stope

  গ

  Lead stope

  ঘ

  None
• The method used for mining narrow veins or pay streaks, where ore occurs as a distinct band, can be separated easily from wall rocks, mining known as . . . . . . . .
  ক

  Room and pillar

  খ

  Wide stall

  গ

  Integral caving

  ঘ

  Resuing
• In this method needs heavy supports comparative than other methods and also supporting costly.
  ক

  Breast

  খ

  Shrinkage

  গ

  Square set

  ঘ

  Sub level
• A system of vertical or nearly vertical openings for transfering ore from a stope to a single delivery point.
  ক

  Draw point

  খ

  Ore pass

  গ

  Grizzley

  ঘ

  Finger rise
• The main advantage of drop raising is that number of workers in the lower level are . . . . . . . . except the operator of LHD.
  ক

  Zero

  খ

  1

  গ

  2

  ঘ

  4
• The raise boring consists essentially of drilling a pilot hole of diameter . . . . . . . .
  ক

  0 - 50mm

  খ

  60 - 120mm

  গ

  150 - 200mm

  ঘ

  230 - 300mm
• Capacity of slusher is . . . . . . . . tph.
  ক

  30 - 40

  খ

  40 - 60

  গ

  10 - 20

  ঘ

  70 - 100
• For a successful VCR stoping, which of the following is appropriate.
  ক

  Large dia blast holes

  খ

  Spherical explosive charges

  গ

  Vertical downward blast hole

  ঘ

  All
• Extraction of small sized, irregularly unsystamatic underground working called
  ক

  Sub level stoping

  খ

  Top slicing

  গ

  Block caving

  ঘ

  Gophering
• In shrinkage stoping the inclination of stope wall should be . . . . . . . .
  ক

  45°

  খ

  >60°

  গ

  >75°

  ঘ

  30°
• The most common system of stope extraction is to maintain as . . . . . . . .
  ক

  Diagonal line of extraction

  খ

  Horizontal line of extraction

  গ

  Vertical line of extraction

  ঘ

  None