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UPSC 2024: 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
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Not attemptedCorrect Answer: (d) Statement-I is incorrect, but Statement-II is correct
Low-mass dwarf stars burn nuclear fuel slowly and can live for tens to hundreds of billions of years, whereas massive giant stars exhaust fuel rapidly and survive only a few million years. Thus Statement I (giants live longer) is incorrect, while Statement II (giants have a higher nuclear-reaction rate) is correct. ([britannica.com](https://www.britannica.com/science/red-dwarf-star?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2024 Science & Technology question?▼
The correct answer is option (d): Statement-I is incorrect, but Statement-II is correct. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Space Technology & Astronomy question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2024, GS Paper 1, as Question 32. It falls under Science & Technology > Space Technology & Astronomy.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Space Technology & Astronomy?▼
UPSC has asked 69 questions from Space Technology & Astronomy (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.