UPPCS Prelims 2025 · GS Paper I: With reference to the 'Indian Ocean', which of the following statements is/are correct?1. It…

UPPCS Prelims 2025 · GS Paper I

With reference to the 'Indian Ocean', which of the following statements is/are correct?

  • 1. It was called by the Ancient Greeks as Erythraean Sea.
  • 2. It is spread on the either side of equator.

Select the correct answer from the code given below:

Answer (b) & explanation

Option (b), both 1 and 2, is correct. Ancient Greek geographers called the Indian Ocean, together with the Red Sea and the Persian Gulf, the Erythraean Sea, meaning the Red Sea. The Periplus of the Erythraean Sea, a 1st-century CE Greek guide, describes trade between Roman Egypt and Indian ports like Barygaza (Bharuch) and Muziris (statement 1). The Indian Ocean spreads across both sides of the equator, though most of it lies in the Southern Hemisphere (statement 2). Concept: it is the third-largest ocean and the only one named after a country. It is bounded on the north by Asia, so it has no Arctic link. Its monsoon wind reversal shaped ancient trade, and Hippalus is credited with explaining it to the Greeks. Trap: Erythraean is the Greek name, not the Roman one.

Trap

Greeks called the Indian Ocean the Erythraean Sea.

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Question and answer as printed in UPPSC's official question booklet with answers (provisional key, published for objections). We will update if the final key differs. Source: uppsc.up.nic.in

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UPSC Prelims 2026 · GS Paper I

Which of the following with reference to Indian States is/are not correct ?

  • 1. Uttar Pradesh shares its boundary with the highest number of other Indian States.
  • 2. Rajasthan shares the longest international border among all Indian States.
  • 3. Sikkim is the only State that shares its boundary with just one other Indian State.

Select the answer using the code given below :

Answer (c) & explanation

Statements 2 and 3 are not correct (c). Statement 1 is correct: Uttar Pradesh touches eight States, plus Delhi, the most of any State. Statement 2 is wrong: the longest international border belongs to West Bengal, with Bangladesh, not Rajasthan. Statement 3 is wrong: Sikkim touches only West Bengal, but Meghalaya also touches only one State, Assam, so the word "only" fails. So options (a), (b) and (d) fail.

Notice the trap: the question asks which are not correct. UP's neighbours are Uttarakhand, Himachal, Haryana, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand and Bihar. Rajasthan has the longest border with Pakistan, about 1,070 km. Words like "only", "all" and "never" often hide the error.

Trap

The question asks for statements that are not correct. Statement 3 is half right; the word "only" breaks it.

Answer as per the official UPSC answer key.

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UPSC Prelims 2026 · GS Paper I

Ships from which of the following countries have to cross the Strait of Hormuz to reach out to the Indian Ocean ?

  • 1. Bahrain
  • 2. Syria
  • 3. Qatar
  • 4. Egypt

Select the answer using the code given below :

Answer (b) & explanation

Bahrain and Qatar must cross the Strait of Hormuz (b). The Strait of Hormuz, between Iran and Oman, is the only sea exit from the Persian Gulf. Items 1 and 3 are right: Bahrain and Qatar lie wholly inside the Gulf, so their ships must pass it. Item 2 is wrong: Syria is on the Mediterranean. Item 4 is wrong: Egypt reaches the Indian Ocean through the Suez Canal and the Red Sea. So options (a), (c) and (d) fail.

Notice its importance: about a fifth of the world's oil passes through Hormuz, and much of India's crude and LNG (Qatar is a top LNG supplier). Iran's threats to close it raise prices. The UAE's pipeline to Fujairah and Saudi pipelines to the Red Sea help bypass it.

Answer as per the official UPSC answer key.

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UPSC Prelims 2026 · GS Paper I

Tungurahua Volcano, which was declared a Global Geopark by UNESCO in 2025, is situated in which one among the following countries ?

Answer (a) & explanation

Tungurahua is in Ecuador (a). Tungurahua, meaning "throat of fire", is an active stratovolcano in the Andes of central Ecuador, above the town of Baños. UNESCO named the area around it a Global Geopark in 2025. Options (b), (c) and (d), Peru, Bolivia and Colombia, are wrong, though the Andes pass through all of them too.

Notice Ecuador's other famous volcanoes: Cotopaxi, one of the highest active volcanoes, and Chimborazo, whose summit is the point farthest from Earth's centre, because of the equatorial bulge. Ecuador also owns the Galápagos Islands. A Global Geopark honours geological heritage; India has none yet, though sites like Lonar have been proposed.

Answer as per the official UPSC answer key.

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UPSC Prelims 2026 · GS Paper I

With reference to the climate of Andaman and Nicobar Islands, which of the following statements is/are correct ?

  • 1. The climate can be defined as a humid, tropical coastal climate.
  • 2. It receives rainfall from both South-west monsoon and North-east monsoon.
  • 3. Maximum precipitation is between December and May.

Select the answer using the code given below :

Answer (b) & explanation

Statements 1 and 2 are correct (b). Statement 1 is right: the islands lie close to the equator in the Bay of Bengal, so they are hot and humid all year, a tropical coastal climate. Statement 2 is right: they get rain from both the south-west and north-east monsoons, from about May to December. Statement 3 is wrong: January to April is the driest part of the year, so maximum rain is not between December and May. So options (a), (c) and (d) fail.

Notice the islands' features: Barren Island, India's only active volcano; Saddle Peak, the highest point; and Indira Point, India's southernmost tip. Rich tropical evergreen forests cover them, and cyclones often form nearby.

Answer as per the official UPSC answer key.

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