Details

BPSC MINING LECTURER EXAM-2025

1.   In the height of motive column is 12m and density of air in DC shaft is 1.2 Kg/m3, find out the NVP.

A.   13.2

B.   10.8

C.   14.4

D.   10

2.   Which of the following occurs first in underground coal mines?

A.   Local fall

B.   Main fall

C.   Air blast

D.   Periodic fall

3.   Sandwich conveyor is a type of

A.   Chain conveyor

B.   Cable belt conveyor

C.   Shaker conveyor

D.   High angle conveyor

4.   When an underground gallery is driven, the equilibrium of pre-mining forces is disturbed and redistribution of pressures takes place. This can be better-explained by

A.   Beam theory

B.   Pressure-arch theory

C.   Key stone theory

D.   Suspension theory

5.   ‘Drop-war-wick’ is used in u/g haulage track as a means of

A.   Tub coupling

B.   Safety arrangement

C.   Super elevation of track

D.   Coal lifting device

6.   Which of the following immediate roof type is treacherous and very unreliable?

A.   Shale

B.   Coal

C.   Slate

D.   Sand stone

7.   Black damp contains varying proportion of

A.   CO2 + N2

B.   CO2 + H2

C.   CO2 + CH4

D.   CO2 + CO

8.   The behavior where the leader is very open minded and has mixing character

A.   Autocratic behavior

B.   Democratic behavior

C.   Laissez faire behavior

D.   Paternalistic behavior