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24 questions from UPSC CSE Prelims GS Paper 1 on Astronomy & Earth–Sun System (Geography). Spanning from 1997 to 2024. Practice with show/hide answers and detailed explanations.
24
Questions
16
Years
14
Easy
10
Moderate
Practice these questions in quiz mode
Based on 24 questions across 16 years, UPSC has consistently tested aspirants' understanding of Astronomy & Earth–Sun System within the broader Geography syllabus. The questions range from factual recall to application-based analysis.
Recent trends show UPSC moving towards statement-based questions that combine multiple aspects of Astronomy & Earth–Sun System. Aspirants should focus on understanding concepts rather than memorizing isolated facts.
Q: On June 21 every year, which of the following latitude(s) experience(s) a sunlight of more than 12 hours ? 1. Equator 2. — Tropic of Cancer 8. Tropic of Capricorn 4. Arctic Circle Select the correct answer using the code given below :
Q: In the northern hemisphere, the longest day of the year normally occurs in the :
Q: Consider the following statements: 1. The Earth's magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. 3. When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct?
Q: Variations in the length of daytime and night-time from season to season are due to
Q: A person stood alone in a desert on a dark night and wanted to reach his village which was situated 5 km east of the point where he was standing. He had no instruments to find the direction but he located the pole star. The most convenient way now to reach his village is to walk in the
Q: Consider the following countries : 1. Australia 2. Namibia 3. Brazil 4. Chile Through which of the above does the Tropic of Capricorn pass ?
Q: Which one of the following planets has largest number of natural satellites or moons?
Q: Consider the following statements: 1. The albedo of an object determines its visual brightness when viewed with reflected light. 2. The albedo of Mercury is much greater than the albedo of the Earth. Which of the statements given above is/are correct?
Q: Which one of the following straits is nearest to the International Date Line?
Q: What is the average distance (approximate) between the Sun and the Earth?
Q: Which one of the following cities does NOT have the same clock time as that of the other cities at any given instant?
Q: Consider the following statements : 1. The axis of the earth’s magnetic field is inclined at 23 ½° to the geographic axis of the earth. 2. The earth’s magnetic pole in the northern hemisphere is located on a peninsula in northern Canada. 3. Earth’s magnetic equator passes through Thumba in South India. Which of the statements given above is/are correct?
Q: Assertion (A): The same face of the Moon is always presented to the Earth. Reason (R): The Moon rotates about its own axis in 23½ days which is about the same time that it takes to orbit the Earth.
Q: Among the following cities, which one is nearest to the Tropic of Cancer?
Q: Which one of the following statements is correct with reference to our solar system?
Q: Who amongst the following was the first to state that the Earth was spherical?
Q: If the stars are seen to rise perpendicular to the horizon by an observer, he is located on the
Q: Along which one of the following meridians did India experience the first light of the sunrise of the new millennium?
Q: If it is 10.00 a.m. I.S.T., then what would be the local time at Shillong on 92°E longitude?
Q: A ship sailing from the eastern extremity of the Aleutian Islands to Dutch Harbour crosses the 180° meridian at 23.30 hrs on January 1, 1999. What time and date will be recorded by the captain of the ship in his diary after one hour journey from the point of crossing of the meridian?
Q: Which one of the following scholars suggests the earth’s origin from gases and dust particles?
Q: When there is noon at the G.M.T. meridian, people at another place of the Earth are taking their 6 o’clock morning tea. The longitude of the place is
Q: The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called
Q: If the earth's direction of rotation is reversed, what would be the IST when it is noon at the International Date Line?
UPSC has asked 24 questions on Astronomy & Earth–Sun System in GS Paper 1 Prelims between 1997 and 2024. This sub-topic falls under Geography.
Questions on Astronomy & Earth–Sun System have appeared in UPSC Prelims in the following years: 2024, 2022, 2018, 2013, 2012, 2009, 2008, 2007, 2005, 2003, 2002, 2001, 2000, 1999, 1998, 1997. The topic has appeared in 16 out of 31 years.
Among 24 questions on Astronomy & Earth–Sun System: 14 are easy, 10 are moderate, and 0 are difficult. Most questions test conceptual understanding of the topic.
