Which of the following minerals is present in monazite sand?

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Oil

Uranium

Thorium

Coal

answer is C.

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Detailed Solution

Thorium is present in monazite sand.
Monazite sand constitutes the earth’s uncommon metals, which happens within the earth’s crust in a remote crystal format. The monazite sand is radioactive and includes an excessive quantity of thorium used for geological study. The rich ore includes sand, and the ore of thorium is specifically extracted from the monazite sand. From the Monazite, thorium is extracted with a separation process. Depending on the region, Monazite includes uranium of 0.2 to 0. four percent withinside the shape of uranium oxide, and it additionally includes 4.5 to 9.5 % thorium as thorium oxide. Thorium is a radioactive metal. It is silvery in appearance, and while uncovered to air, it tarnishes black. The thorium is an electropositive actinide and has an excessive melting point. The thorium mineral sand is contained withinside the monazite sand.

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