MINING AND WORKING QUIZ

1. Coal is a ____________ formation

1. igneous
2. metamorphic
3. sedimentary
4. magmatic

2. Of the given types of geoogical discontinuities and disturbances, ________ are most common in Indian coalfields?

1. Faults
2. Folds
3. Washout
4. Ball coal

3. RMR stands for ___________________.

1. Roof Mass Rating
2. Rating of Massive Roof
3. Rock Mass Rating
4. Rated Mass of Rock

4. Number of cutting drums in a SERDS is/are ________.

1. 1
2. 2
3. 3
4. 4

5. Who frames the Systematic Support Rules for an underground coal mine?

1. Mine Surveyor
2. Agent of the Mine
3. Safety Officer 4. Mine Manager

6. Of the given methods of work of underground mining of a coal seam in same geomining conditions, ________________ will cause maximum surface subsidence.

1. Advance Longwalling with Stowing
2. Wide & Stall Method
3. Bord & Pillar Working with Caving
4. Chess Board Method

7. Which of the following equipment is most suited for side casting in opencast coal mines ?

1. Excavator
2. Dragline
3. Electric Shovel
4. Rope shovel

8. The first opening cut in an opencast mine is known as ______________.

1. Trench cut
2. Berm
3. Box cut
4. Ramp

9. The powder factor in solid blasting in Indian underground coal mines vary from ____________.

1. 1.0 to 1.5 t/Kg
2. 2.0 to 3.0 t/Kg
3. 3.0 to 4.0 t/Kg
4. 4.0to5.0t/Kg

10. Burnside drilling apparatus is used for _____________.

1. Underground shot hole drilling
2. Surface blast holes
3. Drilling long holes for dewatering
4. Core drilling