Question

(A) Fission is a thermonuclear process
(B) Fusion is a thermonuclear process
(C) Fusion is exothermic
(D) Fission is exothermic
Choose the correct answer

• A. A and B are correct
• B. B and C are correct
• C. A and C are correct
• D. B,C and D are correct

Answer 1

Answer: (D)

At temperature of about $10^{7}K$, light nuclei combine to give heavier nuclei. Hence, fusion reactions are called thermo nuclear reactions.
In both fusion and fission reactions energy is released so they are known as exothermic reactions.