MINE BLASTER UN-RESTRICTED (METAL) EXAM DEC 2021
1) The sound level is measured in
a) Meters
b) Lax
c) Decibel
d) All of the above
e) None
2) The relieving hole for dealing the
misfires, shall not be
a) Nearer than 30 meters from the
misfired hole
b) Nearer than 3 meters from the
misfired hole
c) Nearer than 30 millimeters from the
misfired hole
d) Nearer than 30 centimeters from the
misfired hole
e) Nearer than 40 centimeters from the
misfired hole
3) Containers made up of following
material shall not be used for carrying explosives
a) Non conductive material
b) Galvanized steel
c) Galvanized iron
d) Conductive material
e) None of the above
4) No drill shall be used for boring
a shot hole unless it allows a clearance of atleast___ over a diameter or the
cartridge of explosives?
a) 0.3 cm
b) 0.4 cm
c) 0.5 cm
d) 0.6 cm
e) 0.8 cm
5) Canteen is required to be provided
in mine where more than ____ person are ordinarlly employed
a) 100
b) 200
c) 150
d) 250
e) 50
6) Not more than ____ detonators are
transported in a vehicle at a time in the mine
a) 50
b) 100
c) 150
d) 200
e) None of the above is correct
7) What is not used as a fuel in an explosive
mixture?
a) Fuel oil
b) Starch
c) Sugar
d) Ammonium nitrate
e) Woodmeal
8) The aggregate maximum charge in
holes fired at one time shall not exceed______ in case of an opencast workings,
where any permanent structure not belonging to the owner lies within the danger
zone at 80m distance?
a) 2 kilograms
b) 5 kilograms
c) 3.7 kilograms
d) 10 kilograms
e) 4.4 kilograms
9) Every magazine where explosives
are stored shall be in charge of a_____who shall be responsible for the proper
storage of explosive
a) Owner
b) Manager
c) Blaster
d) Foreman
e) Competent person
10) Explosive shall be stored in
a) Store
b) Strong steel almirah
c) Approved magazine
d) Air conditioned store
e) None of the above
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