Q. Consider the following statements:
Statement-I : Giant stars live much longer than dwarf stars.
Statement-II : Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.
Which one of the following is correct in respect of the above statements?

[A] Both Statement-I and Statement-II are correct and Statement-II explains Statement-I

[B] Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I

[C] Statement-I is correct, but Statement-II is incorrect

[D] Statement-I is incorrect, but Statement-II is correct

Answer: D
Notes:

Exp) Option d is the correct answer.

Statement- I is incorrect: Giant stars actually have shorter lifetimes compared to dwarf stars. Their massive cores burn through nuclear fuel more rapidly, leading to a shorter overall lifespan.

Statement-II is correct: Giant stars, due to their higher mass, have hotter and denser cores. As a result, they experience more intense nuclear reactions, which contribute to their brightness and energy output.

Source: https://solarsystem.nasa.gov/genesismission/gm2/mission/pdf/Giantstars.pdf

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