Related Questions

Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
A Neutralised by alkali treatment
B Left as such without any treatment
C Diluted with fresh water to reduce its acidity
D None of these
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
The gas that usually causes explosions in coal mines is
A Hydrogen
B Carbon monoxide
C Air
D Methane
Which of the following gas causes explosion in coal mines?
A Carbon dioxide
B Nitrogen
C Butane
D Methane
The Appalachian coal fields, one of the important coal fields in the world, are located in ________
A China
B Great Britain
C U.S.A.
D Russia
Kalgoorlie and Coolgardie - places famous for gold mines are located in:
A Australia
B USA
C England
D South Africa
Iron ore mines are located in
A Salem, Bhadravati, Raniganj
B Hazaribagh, Jharia, Kudremukh
C Monghyr, Balaghat, Hazaribagh
D Singhbhum, Mayurbhanj, Bastar
Gold Mines in India are located mainly in
A Kolar
B Raniganj
C Jadugoda
D Veeranam
Which district of Jharkhand was declared to be the second capital by Babu Lal Marandi, on being the Chief Minister of Jharkhand?
A Lohardaga
B Simdega
C Dumka
D Saraikela
In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a
A Belt conveyor
B Bucket conveyor
C Fork lift truck
D Overhead crane

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