UPSC CSE Prelims GS-1 Topic-wise PYQs
Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?

Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?

(a). Fig (b). Mahua (c). Sandalwood (d). Silk cotton  Explanation : The fig tree (Ficus microcarpa) and fig wasps have a unique coevolutionary relati…
How many of the above are considered Distributed Energy Resources?

How many of the above are considered Distributed Energy Resources?

Consider the following: Battery storage Biomass generators Fuel cells Rooftop solar photovoltaic units How many of the above are considered Distrib…
Which one of the following is the correct description of 100 Million Farmers?

Which one of the following is the correct description of 100 Million Farmers?

(a). It is a platform for accelerating the transition towards food and water systems that are net-zero (carbon), nature-positive and that aims to inc…
Lions do not have a particular breeding season and Unlike most other big cats, cheetahs don't roar.

Lions do not have a particular breeding season and Unlike most other big cats, cheetahs don't roar.

Consider the following statements : Lions do not have a particular breeding season. Unlike most other big cats, cheetahs don't roar. Unlike male…
Consider the following statements regarding World Toilet Organization :

Consider the following statements regarding World Toilet Organization :

It is one of the agencies of the United Nations. World Toilet Summit, World Toilet Day and World Toilet College are the initiatives of this organizat…
Country - Animal found in its natural habitat

Country - Animal found in its natural habitat

Consider the following pairs: Country            -                 Animal found in its natural habitat 1. Brazil            -                      In…
Many chewing gums found in the market are considered a source of environmental pollution and Many chewing gums contain plastic as gum base.

Many chewing gums found in the market are considered a source of environmental pollution and Many chewing gums contain plastic as gum base.

Consider the following statements : Statement-I: Many chewing gums found in the market are considered a source of environmental pollution. Statement…
The organisms Cicada, Froghopper and Pond skater are:

The organisms Cicada, Froghopper and Pond skater are:

(a). Birds (b). Fish (c). Insects (d). Reptiles  Explanation: Cicadas, froghoppers, and pond skaters are all insects. Therefore, the answer is (c).
Consider the following information : Region - Name of the mountain range - Type of mountain

Consider the following information : Region - Name of the mountain range - Type of mountain

Consider the following information : Region                 Name of the mountain range              Type of mountain 1. Central Asia                 …
Consider the following information: Waterfall - Region - River

Consider the following information: Waterfall - Region - River

Consider the following information:     Waterfall -             Region -                   River 1. Dhuandhar -       Malwa -                     Na…
How many of the above countries have a border with the North Sea?

How many of the above countries have a border with the North Sea?

Consider the following countries : 1. Finland 2. Germany 3. Norway 4. Russia How many of the above countries have a border with the North Sea? (a). …
Rainfall is one of the reasons for weathering of rocks - carbon dioxide in solution - atmospheric oxygen

Rainfall is one of the reasons for weathering of rocks - carbon dioxide in solution - atmospheric oxygen

Consider the following statements : Statement-I: Rainfall is one of the reasons for weathering of rocks. Statement-II: Rain water contains carbon di…
With reference to the Himalayan rivers joining the Ganga downstream of Prayagra from West to East, which one of the following sequences is correct?

With reference to the Himalayan rivers joining the Ganga downstream of Prayagra from West to East, which one of the following sequences is correct?

(a). Ghaghara – Gomati – Gandak – Kosi  (b). Gomati - Ghaghara – Gandak – Kosi (c). Ghaghara – Gomati – Kosi – Gandak (d). Gomati - Ghaghara - Kosi -…
Which of the following countries are well known as the two largest cocoa producers in the world?

Which of the following countries are well known as the two largest cocoa producers in the world?

(a). Algeria and Morocco  (b). Botswana and Namibia (c). Côte d’Ivoire and Ghana (d). Madagascar and Mozambique  Explanation:  Côte d'Ivoire and …
UPSC CSE Prelims Test Series "Test - 01"

UPSC CSE Prelims Test Series "Test - 01"

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UPSC CSE 2025 Prelims Test Series

UPSC CSE 2025 Prelims Test Series

UPSC CSE 2025 Prelims Test Series  PreWrit 2025    ✅ UPSC CSE 2025  Prelims Test Series ✅ Will be available in both  Hindi & English   ✅ Every …
Which of the following is/are correct inference/inferences from isothermal maps in the month January?

Which of the following is/are correct inference/inferences from isothermal maps in the month January?

1. The isotherms deviate to the north over the ocean and to the south over the continent.  2. The presence of cold ocean currents, Gulf Stream and No…
How many of the above are products of volcanic eruptions?

How many of the above are products of volcanic eruptions?

Consider the following: 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volc…
Thickness of the troposphere at the equator is much greater as compared to poles. At the equator, heat is transported to great heights by strong convection currents.

Thickness of the troposphere at the equator is much greater as compared to poles. At the equator, heat is transported to great heights by strong convection currents.

Consider the following statements: Statement-I: Thickness of the troposphere at the equator is much greater as compared to poles. Statement-II: At th…
Carbon dioxide and other greenhouse gasses in the atmosphere are good absorbers of long wave radiation

Carbon dioxide and other greenhouse gasses in the atmosphere are good absorbers of long wave radiation

Consider the following statements: Statement-I: The atmosphere is heated more by incoming solar radiation than by terrestrial radiation.  Statement…
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