Places and Locations: World Geography: UPSC Previous Year Questions (Geography)
1 previous year UPSC Prelims question on Places and Locations: World Geography (Geography). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
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UPSC 1998Geography · Places and Locations: World Geography
Q1. When there is noon at I.S.T. meridian people at another place of the earth are taking their 6 O’ clock morning tea. The longitude of the place is:
Explanation
Option (b) is correct: Indian Standard Time (I.S.T.) is based on the meridian 82°30’ E, which is the reference for I.S.T. If it is noon (12:00 PM) at I.S.T., and people at another place are having 6:00 AM morning tea, that means the time difference between the two places is 6 hours. To calculate the longitude difference:
A time difference of 1 hour corresponds to a 15° difference in longitude. Therefore, a 6-hour difference corresponds to a 90° difference in longitude (6 × 15°). Since the other place is 6 hours behind I.S.T., it must be 90° to the west of the I.S.T. meridian. I.S.T. The meridian is at 82°30’ E, so moving 90° to the west brings us to 7°30’ W. Thus, the place is at a longitude of 7°30’ W.
Answer key for these questions
Q
UPSC year
Correct answer
1
1998
(b) 7°30’ W.
Frequently asked questions
How many previous year UPSC questions are there on Places and Locations: World Geography?
This page covers 1 previous year UPSC Prelims GS Paper-I questions on Places and Locations: World Geography (Geography), asked from 1997 to 2025. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Places and Locations: World Geography?
Questions on Places and Locations: World Geography (Geography) are available for 26 years, from 1997 to 2025. Use the Year filter to practise a single paper.
