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Last updated on September 12, 2024 6:43 PM
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Economic Community of West African States (ECOWAS)
Operation Barkhane
Niger
Uranium
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Kuruvai cultivation
Samba Cultivation
Other paddy seasons in Tamil Nadu
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Indian Council of Agricultural Research (ICAR)
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Chief of Defence Staff (CDS)
Appointment of CDS
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Radioactive Atoms (or Isotopes)
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Nuclear Fission |
Nuclear Fusion |
Splitting of a large atom into two or more smaller ones. | Fusing two or more lighter atoms into a larger one. |
It involves a chain reaction, which can lead to dangerous meltdowns. | There is no chain reaction involved. |
Does not usually occur in nature. | Fusion occurs in stars, such as the sun. |
Produces many highly radioactive particles (nuclear waste). | The fusion reaction produces few radioactive particles, but radioactive particles will result if a fission “trigger” is used. |
A critical mass of the substance and high-speed neutrons are required. | High density, high-temperature environment is required. |
Takes little energy to split two atoms. | Extremely high energy is required to bring two or more protons close enough that nuclear forces overcome their electrostatic repulsion. |
The energy released by fission is a million times greater than that released in chemical reactions. | The energy released by fusion is three to four times greater than that in fission. |
Used in an atomic bomb. | Used in a hydrogen bomb, which uses a fission reaction to “trigger” a fusion reaction. |
Fission is used in nuclear power plants. | Fusion is an experimental power-producing technology. |
Uranium and Plutonium isotopes are the primary fuel. | Hydrogen isotopes (Deuterium and Tritium) are the primary fuel in experimental fusion power plants. |
Nuclear waste, a by-product of fission, is an environmental challenge. | There is no nuclear waste produced in a thermonuclear reactor. |