Chhattisgarh has significant reserves of:

Coal
Petroleum
Natural Gas
Uranium

Chhattisgarh has significant reserves of coal. The state is the second largest producer of coal in India, after Jharkhand. The coal reserves in Chhattisgarh are estimated to be around 50 billion tonnes. The coal in Chhattisgarh is of high quality and is used in power plants, steel mills, and other industries.

Petroleum is a fossil fuel that is found in the Earth’s crust. It is a liquid that is made up of hydrocarbons, which are compounds that are made up of hydrogen and carbon atoms. Petroleum is used to make gasoline, diesel fuel, and other products.

Natural gas is a fossil fuel that is found in the Earth’s crust. It is a gas that is made up of methane, ethane, propane, and butane. Natural gas is used to generate electricity, heat homes and businesses, and power vehicles.

Uranium is a radioactive metal that is found in the Earth’s crust. It is used to make nuclear fuel. Nuclear fuel is used to generate electricity in nuclear power plants.

The correct answer to the question “Chhattisgarh has significant reserves of: Coal / Petroleum / Natural Gas / Uranium” is Coal.