The correct answer is: d) Uranium and thorium.
Nagaland is a state in northeastern India. It is bordered by the states of Assam and Manipur to the south, Arunachal Pradesh to the east, and Myanmar to the north and west. The state has a population of about 2 million people and a land area of about 16,579 square kilometers.
The geology of Nagaland is complex and varied. The state is located in the eastern part of the Indian Plate, which is a tectonic plate that is moving northward. The Indian Plate is colliding with the Eurasian Plate, which is causing the Himalayas to rise. The collision of these two plates has also caused the formation of the Naga Hills, which are a mountain range that runs through the state.
The geology of Nagaland is also affected by the presence of the Shillong Plateau, which is a plateau that is located to the south of the state. The Shillong Plateau is made up of old igneous and metamorphic rocks. These rocks are rich in minerals, including uranium and thorium.
Uranium and thorium are radioactive elements that are used in the production of nuclear energy. They are also used in the production of other products, such as ceramics and glass. The presence of uranium and thorium in Nagaland has made the state a potential source of these minerals.
The other options are incorrect because they are not minerals that are found in Nagaland. Coal and petroleum are fossil fuels that are found in sedimentary rocks. Iron ore and limestone are metallic and non-metallic minerals that are found in igneous and metamorphic rocks. Gold and diamonds are precious metals and gemstones that are found in all types of rocks.