3,238 previous year UPSC Prelims (GS Paper-I) questions, from 1995 to 2025, each with the correct answer and a full explanation. Filter by subject, chapter or year.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1841–1850 of 3238 questions
Browse by subjectBrowse by year
UPSC 2007General Knowledge · Contemporary Events: World
Q1841. Consider the following statements: 1. Republicans won the majority in the US House of Representatives Elections held in the year 2006. 2. Republican Bobby Jindal, won a seat in the US House of Representatives for the second time. Which of the statements given above is/are correct?
Explanation
Statement 1 is incorrect: The Republicans did not win the majority in the US House of Representatives in the 2006 elections. In fact, the Democrats won control of the House of Representatives in the 2006 midterm elections, ending 12 years of Republican rule.
Statement 2 is correct: Bobby Jindal, a Republican, did win a seat in the US House of Representatives for the second time in 2006.
UPSC 2007General Knowledge · Contemporary Events: World
Q1842. What is the broad area in which the Nobel Prize winners for the year 2006 in Physiology or Medicine, worked to get the Prize?
Explanation
Andrew Z. Fire and Craig C. Mello won the 2006 Nobel Prize in Physiology or Medicine for discovering RNA interference (RNAi), a key gene regulation process. Their research showed how siRNAs silence specific genes by interfering with mRNA, revolutionizing molecular biology. RNAi plays a vital role in gene expression, disease suppression, and biotechnology, with potential treatments for genetic disorders, viral infections, and cancers.
UPSC 2007Polity · Prime Minister
Q1843. Assertion (A): The Council of Ministers in the Union of India is collectively responsible both to the Lok Sabha and Rajya Sabha. Reason (R): The Members of both the Lok Sabha and the Rajya Sabha are eligible to be the Ministers of the Union Government.
Explanation
Assertion (A) is false: As per the Article 75(3) the Council of Ministers shall be collectively responsible to the House of the People (Lok sabha) only. Reason (R) is true: As per article 75(5) A Minister who for a period of six consecutive months is not a member of either House of Parliament shall at the expiration of that period cease to be a Minister. Thus members of both houses can be a Minister of the Union Government of India. However a person that is not a member of either house can be a minister for a maximum of 6 months.
UPSC 2007Science and Technology · Defence Technology
Q1844. Consider the following statements: 1. In November, 2006 DRDO successfully conducted the interception test using the Prithvi-II missile. 2. Prithivi-II is a surface-to-surface missile and can be deployed to guard the metros against air attacks. Which of the statements given above is/are correct?
Explanation
Statement 1 is correct: In November 2006, the Defence Research and Development Organisation (DRDO) of India conducted a successful test of the Prithvi Air Defence (PAD) system, which used the Prithvi-II missile as an interceptor to destroy an incoming target missile. The Prithvi-II missile has been instrumental in validating India’s BMD technologies, ensuring readiness to protect against ballistic missile threats. This test marked a significant milestone in India’s ballistic missile defence program.
Statement 2 is correct: While the primary role of the Prithvi-II is as a surface-to-surface missile but it has been adapted for air defense purposes also. It is part of India’s Ballistic Missile Defense (BMD) system, which is designed to protect major cities from ballistic missile attacks.
UPSC 2007General Knowledge · Contemporary Events: World
Q1845. Which one of the following countries is planning to construct a rival to the Panama Canal to link the Pacific and Atlantic Oceans?
Explanation
Nicaragua has proposed constructing an alternative to the Panama Canal, known as the Nicaraguan Canal or Interoceanic Grand Canal, to connect the Pacific and Atlantic Oceans. This ambitious project aims to enhance global maritime trade by offering a new route that could reduce shipping distances and costs.
UPSC 2007Polity · Prime Minister
Q1846. Consider the following statements: 1. Jawaharlal Nehru was in his fourth term as the Prime Minister of India at the time of his death. 2. Jawaharlal Nehru represented Rae Bareilly constituency as a Member of Parliament. 3. The first non-Congress Prime Minister of India assumed the office in the year 1977. Which of the statements given above is/are correct?
Explanation
Statement 1 is correct: Jawaharlal Nehru was in PM’s Office for four terms (1947-52, 1952-57, 1957-62 and 1962-64 until death).
Statement 2 is incorrect: JL Nehru represented Phulpur Lok Sabha Constituency near Allahabad. Indira Gandhi represented Rae Bareilly while Rajiv Gandhi represented Amethi LS constituencies.
Statement 3 is correct: Morarji Desai, from the Janata Party, became the first non-Congress Prime Minister on March 24, 1977.
UPSC 2007Science and Technology · Defence Technology
Q1847. What is the Galileo Project which has been in the news recently?
Explanation
The Galileo Project is a multi-satellite navigation system being developed by the European Union (EU). Galileo consists of 24 satellites orbiting Earth at an altitude of 23,000 km. The signals of Galileo are freely transmitted to anyone who has a device capable of receiving its signals (e.g., smartphone). Galileo is four times more accurate than GPS providing 1 meter accuracy and a broad range of services. It is designed to provide an independent global positioning system (GPS) for civilian and commercial use, reducing reliance on GPS systems controlled by other countries, such as the United States. Galileo aims to offer highly accurate and reliable positioning and timing information worldwide, supporting applications in transportation, telecommunications, and other critical sectors.
UPSC 2007General Knowledge · Contemporary Events: World
Q1848. Which one of the following pairs of countries joined the European Union in January 2007?
Explanation
Bulgaria and Romania joined the EU on January 1, 2007, after implementing key judicial, anti-corruption, and economic reforms to meet accession criteria. Bulgaria negotiated since 2000, focusing on market regulations and governance reforms, while Romania, in talks since 1995, improved agriculture and judiciary standards. Their simultaneous accession followed sustained reforms and positive EU evaluations.
UPSC 2007General Knowledge · Contemporary Events: World
Q1849. Which one of the following countries recently upgraded its defence agency to a full defence ministry?
Explanation
Japan upgraded its defence agency to a full-fledged ministry to strengthen its defence capabilities and better address emerging security challenges. This decision was driven by rising regional threats and shifting global security dynamics.
UPSC 2007General Knowledge · Contemporary Events: World
Q1850. In the latter half of the year 2006, in which one of the following countries did a military coup take place?
Explanation
In the latter half of 2006, a significant political event unfolded in Thailand:
On 19 September 2006, the Royal Thai Army staged a coup against PM Thaksin Shinawatra, dissolving parliament, banning protests, and imposing martial law. General Sonthi Boonyaratglin led the coup, forming the Council for National Security (CNS) and appointing Surayud Chulanont as interim PM. Elections were held on 23 December 2007 after Thaksin’s party was dissolved.
Additional insight:
Some Recent Coups:
Mali: Mali experienced two coups during this period. The first one occurred in August 2020, and the second one in May 2021. Myanmar: In February 2021, the military seized power in Myanmar, overthrowing the elected civilian government. Guinea: In September 2021, the military took control of Guinea, ousting the president. Sudan: In October 2021, a military coup took place in Sudan, dissolving the transitional government. Burkina Faso: Burkina Faso experienced two coups during this period. The first one occurred in January 2022, and the second one in September 2022. Niger: In July 2023, the military seized power in Niger, overthrowing the president. Gabon: In August 2023, the military took control of Gabon, annulling the recent election results. Bangladesh: In August 2024, Bangladesh experienced a military-backed transition, leading to the resignation of PM Sheikh Hasina and the installation of an interim civilian government.
Answer key for these questions
Q
UPSC year
Correct answer
1841
2007
(b) 2 only
1842
2007
(b) Flow of genetic information
1843
2007
(d) A is false but R is true
1844
2007
(c) Both 1 and 2
1845
2007
(d) Nicaragua
1846
2007
(d) 1 and 3
1847
2007
(d) A multi-satellite navigation project being developed by the European Union
1848
2007
(a) Bulgaria and Romania
1849
2007
(b) Japan
1850
2007
(c) Thailand
Frequently asked questions
How many previous year UPSC questions are there on all subjects?
This page covers 3238 previous year UPSC Prelims GS Paper-I questions on UPSC Prelims GS Paper-I, asked from 1995 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 all subjects?
Questions on UPSC Prelims GS Paper-I are available for 31 years, from 1995 to 2025. Use the Year filter to practise a single paper.