The correct answer is: d) All of the above
Assam is a major producer of coal, natural gas, and petroleum.
Coal is a fossil fuel formed from the remains of ancient plants and animals that have been buried and subjected to intense heat and pressure over millions of years. It is a non-renewable resource that is used to generate electricity, produce steel, and make other products.
Natural gas is a fossil fuel formed from the remains of ancient plants and animals that have been buried and subjected to intense heat and pressure over millions of years. It is a non-renewable resource that is used to generate electricity, heat homes and businesses, and power vehicles.
Petroleum is a fossil fuel formed from the remains of ancient plants and animals that have been buried and subjected to intense heat and pressure over millions of years. It is a non-renewable resource that is used to produce gasoline, diesel fuel, jet fuel, and other products.
Assam is one of the largest producers of coal in India. The state has estimated reserves of over 30 billion tonnes of coal. Coal is mined in the state by both public and private sector companies. The main coalfields in Assam are the Makum coalfield, the Margherita coalfield, and the Lakhimpur coalfield.
Assam is also a major producer of natural gas. The state has estimated reserves of over 2 trillion cubic feet of natural gas. Natural gas is produced in the state by both public and private sector companies. The main natural gas fields in Assam are the Brahmaputra Valley gas field, the Dibrugarh gas field, and the Tinsukia gas field.
Assam is also a major producer of petroleum. The state has estimated reserves of over 1 billion barrels of petroleum. Petroleum is produced in the state by both public and private sector companies. The main petroleum fields in Assam are the Moran oil field, the Digboi oil field, and the Naharkatia oil field.