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Nuclear Fusion

Chemistry ⇒ Nuclear Chemistry

Nuclear Fusion starts at 11 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Nuclear Fusion. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A fusion reaction has a Q-value of 17.6 MeV. What does the Q-value represent in this context?
A fusion reaction releases 17.6 MeV of energy. How much energy is this in joules? (1 eV = 1.602 × 10⁻¹⁹ J)
A fusion reactor operates at a temperature of 150 million Kelvin. Is this temperature higher or lower than the core temperature of the Sun?
Calculate the energy released when 0.001 kg of mass is converted to energy during a fusion reaction. (Use c = 3.0 × 10⁸ m/s)
Calculate the mass defect if 4 hydrogen nuclei (each of mass 1.007825 u) fuse to form a helium-4 nucleus (mass 4.002603 u).
Describe one major technological challenge in achieving practical nuclear fusion energy on Earth.
Describe the environmental impact of nuclear fusion compared to fossil fuels.
Describe the main advantage of fusion over fission as an energy source.
Describe the role of plasma in nuclear fusion reactors.
Explain the concept of the Coulomb barrier in nuclear fusion.
Explain why achieving a net positive energy output from fusion is difficult.
Explain why deuterium and tritium are preferred fuels for fusion reactors.
Explain why extremely high temperatures are required for nuclear fusion to occur.
Explain why magnetic fields are used in fusion reactors like the tokamak.
What is nuclear fusion?