Which one of the following is a soft and brownish variety of coal?
Anthracite
Magnetite
Haematite
Lignite
Which one of the following mineral ores is formed by decomposition of rocks, leaving a residual mass of weathered materials?
Bauxite
Coal
Gold
Zinc
Which is the prime source of energy in the manufacturing of iron and steel?
Petroleum
Natural gas
Biogas
Which one of the following types of coal is most popular for commercial use?
Bituminous
The best quality of iron ore is
Siderite
Pyrite
Which one of the following is referred to as black gold?
Firewood
Which of the following minerals is indispensable for electric and electronic industries?
Manganese
Mica
Iron
Nickel
Which is the most abundantly available fossil fuel in India?
Which one of the following has a low carbon and high moisture contents and low heating capacity?
Peat
Which is considered to be an environment friendly fuel?
