The Monazite sands of Kerala are rich in:a)coalb)uraniumc)thorium d)platinumCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Due to the alpha decay of thorium and uranium, monazite contains a significant amount of helium, which can be extracted by heating. Monazite is an important ore for thorium, lanthanum, and cerium. It is often found in placer deposits. India, Madagascar, and South Africa have large deposits of monazite sands.

Answer

Monazite is an important ore for thorium, lanthanum, and cerium. It is often found in placer deposits.
so the correct answer is C.

Answer

Monazite sands are a significant source of thorium, which is a radioactive element commonly found in the Earth's crust. Kerala, a state in India, is known for its extensive deposits of monazite sands. The correct answer to the question is option 'C' - thorium.

Let's delve into the details of why monazite sands in Kerala are rich in thorium:

1. Monazite Sands:
Monazite is a reddish-brown phosphate mineral that contains various rare earth elements, including thorium and other radioactive elements. It is typically found in heavy mineral sand deposits, which are formed through the erosion and weathering of rocks over millions of years. Kerala's coastal areas, particularly in the districts of Kollam and Alappuzha, have abundant monazite sands due to the presence of these heavy mineral deposits.

2. Thorium:
Thorium is a naturally occurring radioactive metal that is more abundant in the Earth's crust than uranium. It is primarily obtained from monazite sands, making these deposits of immense importance. Thorium has several industrial applications and is also a potential source of nuclear energy.

3. Radioactive Properties:
Thorium is a weakly radioactive element, and its isotopes undergo alpha decay, emitting alpha particles. This property makes it a significant source of nuclear fuel and has led to interest in its potential for nuclear energy generation. It can also be used in the production of high-quality glass, ceramics, and catalysts.

4. Nuclear Energy Potential:
Thorium is being explored as an alternative to traditional uranium-based nuclear reactors due to its abundance, lower radioactivity, and reduced nuclear waste production. It is considered a safer and more sustainable option for nuclear power generation.

5. Kerala's Thorium Reserves:
Kerala is estimated to have one of the world's largest reserves of thorium, with the monazite sands in the state containing around 10-15% thorium oxide. The Atomic Minerals Directorate for Exploration and Research (AMD) has identified several areas in Kerala with significant thorium deposits.

In conclusion, the monazite sands of Kerala are rich in thorium. These sands contain the mineral monazite, which is a valuable source of thorium. Kerala's extensive reserves of thorium make it a significant potential source for nuclear energy generation and other industrial applications.

Answer

C

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