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UPSC 2002: Which one of the following statements is correct with reference to our solar system?
(a)The Earth is the densest of all the planets in our solar system
(b)The predominant element in the composition of Earth is silicon
(c)The Sun contains 75 % of the mass of the solar system
(d)The diameter of the Sun is 190 times that of the Earth
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Not attemptedCorrect Answer: (a) The Earth is the densest of all the planets in our solar system
Earth has the highest mean density (≈5.52 g cm⁻³) among all eight planets, so statement (a) is true. Iron—not silicon—is the single most abundant element by mass in the whole Earth, refuting (b). The Sun accounts for about 99.8 % of the solar-system mass, not 75 %, making (c) wrong. The Sun’s diameter is ≈109 × that of Earth, not 190 ×, so (d) is incorrect. ([examrobot.com](https://examrobot.com/content/which-one-following-statements-correct-reference-our-solar-system?utm_source=openai))
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What is the correct answer to this UPSC 2002 Geography question?▼
The correct answer is option (a): The Earth is the densest of all the planets in our solar system. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Astronomy & Earth–Sun System question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2002, GS Paper 1, as Question 27. It falls under Geography > Astronomy & Earth–Sun System.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Astronomy & Earth–Sun System?▼
UPSC has asked 27 questions from Astronomy & Earth–Sun System (under Geography) across multiple years. Visit the topic page to see the full list and year-wise trends.