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 2781–2790 of 3238 questions
Browse by subjectBrowse by year
UPSC 2000General Knowledge · Contemporary Events: India
Q2781. The new GDP series released by the CSO in February, 1999 is with reference to base price of:
Explanation
The Central Statistical Office (CSO) revises the Gross Domestic Product (GDP) series periodically to update the base year, ensuring that GDP calculations reflect current economic conditions. In February 1999, the CSO released a new GDP series with the base year changed to 1993-94. The previous GDP series was based on 1990-91 prices, and this update aligned the GDP estimates with more recent economic data.
Additional insight:
India revises the base year for GDP calculations periodically to align with economic changes. In 2015, it was updated from 2004-05 to 2011-12. The government now plans to shift the base year to 2022-23 by February 2026 for a more accurate economic assessment.
UPSC 2000General Knowledge · Contemporary Events: India
Q2782. The Standing Committee of State Finance Ministers recommended in January, 2000 uniform rates across the states in respect of:
Explanation
In January 2000, the Standing Committee of State Finance Ministers recommended uniform Sales Tax rates across states to reduce disparities and harmonize taxation. This paved the way for Value-Added Tax (VAT), which replaced the sales tax system in many states from April 2005.
UPSC 2000General Knowledge · Contemporary Events: India
Q2783. The Swarna Jayanti Shahari Rozgar Yojana which came into operation from 1-12-1997 aims to provide gainful employment to the urban unemployed or underemployed poor but does not include:
Explanation
The Swarna Jayanti Shahari Rozgar Yojana (SJSRY) was launched on December 1, 1997, to provide self-employment and wage employment to urban unemployed and underemployed poor. It was formed by merging various urban poverty alleviation schemes, including Nehru Rozgar Yojana (NRY), Urban Basic Services for the Poor (UBSP), and Prime Minister’s Integrated Urban Poverty Eradication Programme (PMIUPEP). However, the Prime Minister’s Rozgar Yojana (PMRY) was not merged with SJSRY, as it remained a separate program focusing on self-employment for educated unemployed youth in both urban and rural areas.
UPSC 2000General Knowledge · Contemporary Events: India
Q2784. Consider the following statements: The Ministerial Meeting of WTO held in December 1999 was unsuccessful because in attempted to link trade with: 1. Labour related issues 2. Environment related issues 3. Terrorism related issues 4. Debt related issues Which of these statements are correct?
Explanation
The World Trade Organization (WTO) Ministerial Conference, held in December 1999 in Seattle, USA, failed due to disagreements among member countries on key issues. Developed nations, particularly the United States and the European Union, pushed for including labour standards in trade negotiations, which developing countries opposed, fearing protectionist measures against their exports. Similarly, environmental concerns became contentious as some nations and environmental groups demanded trade policies incorporating environmental protection, while developing nations resisted, citing unfair trade restrictions However, terrorism-related issues were not a major focus at the time, as global economic discussions on terrorism gained prominence only after 9/11. Likewise, while debt-related issues were a concern for developing countries, the conference primarily focused on trade negotiations rather than debt relief.
UPSC 2000General Knowledge · Contemporary Events: India
Q2785. The upper part of the given graph is a hypothetical movement in the BSE Sensex over a few months and the lower part is the fluctuation in the average value of automobile shares in the same period (actual values not given). Which one of the following inferences can be drawn from the graphs?
Explanation
This inference could be drawn if the fluctuations in the Sensex are particularly sharp in that specific period (June/July), which often happens during political changes or events. If the Sensex reacts to such changes while the automobile market stays steady, it suggests that political instability might have contributed to the broader market fluctuations, but it did not affect the automobile sector in the same way.
UPSC 2000Science and Technology · Biology: Zoology
Q2786. Assertion (A): In human beings, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes. Codes:
Explanation
Assertion (A) is false: Humans have 46 chromosomes (23 pairs), one of which determines sex. This pair consists of XX in females and XY in males. During reproduction, the mother always contributes an X chromosome, while the father can contribute either an X or a Y chromosome. If a sperm carrying an X chromosome fertilizes the egg, the offspring will be female (XX), whereas if a sperm carrying a Y chromosome fertilizes the egg, the offspring will be male (XY). Since the sperm determines the final chromosomal combination, the father plays the major role in sex determination. Reason (R) is true: Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
UPSC 2000Science and Technology · Biology: Zoology
Q2787. At which stage in its life cycle, does the silkworm yield the fibre of commerce?
Explanation
The silkworm yields the fiber of commerce during its larval stage, specifically when it starts to spin its silk cocoon. The silkworm (the larval stage of the silk moth Bombyx mori) produces the fiber of commerce during its larval stage. This stage is when the silkworm starts spinning its silk to form a protective cocoon around itself. The silk produced by the larva is collected and used commercially to make silk fabric. Therefore, the correct stage when the silkworm yields the fibre of commerce is the larva. The imago is the adult moth stage in the silkworm’s life cycle. After metamorphosis, the adult moth does not produce silk. Its role is to mate and lay eggs, continuing the life cycle. Therefore, the silkworm does not yield silk during the imago stage.
UPSC 2000Science and Technology · Biology: Zoology
Q2788. Match List-I (Disease) with List-II (Types of disease) and select the correct answer using the codes given below:
List-I
List-II
A. Haemophilia
1. Deficiency disease
B. Diabetes
2. Genetic disease
C. Rickets
3. Hormonal disorder
D. Ringworm
4. Fungal infection
Explanation
A is matched with 2: Haemophilia is a genetic disease caused by mutations in clotting genes. It is inherited via X chromosome. Under this, blood does not clot properly due to a deficiency of clotting factors (such as Factor VIII in Haemophilia A or Factor IX in Haemophilia B). This leads to excessive bleeding even from minor injuries. B is matched with 3: Diabetes is primarily a hormonal disorder related to insulin production or the body’s inability to use insulin effectively. Type 1 diabetes is due to insufficient insulin production (autoimmune) while Type 2 is due to insulin resistance. C is matched with 1: Rickets is caused by a deficiency of vitamin D, calcium, or phosphate, leading to weakened bones. It is not genetic or hormonal but results from nutritional deficiencies. D is matched with 4: Ringworm is a fungal infection caused by dermatophytes, affecting skin, hair, nails resulting in ring-shaped patches.
UPSC 2000Geography · Places and Locations: World Geography
Q2789. Consider the following provinces of former Yugoslavia: 1. Bosnia 2. Croatia 3. Slovenia 4. Yugoslavia The correct sequence of these provinces from the east to west is:
Explanation
Yugoslavia: The Federal Republic of Yugoslavia, as it existed circa 2000, was a federation comprising Serbia and Montenegro. Geographically, it occupied the easternmost portion of the area in question, bordering the other listed entities. It is important to note that this federation was in the process of dissolution during this period i.e 2000. Bosnia: Bosnia and Herzegovina, often referred to simply as Bosnia, is located west of the former Yugoslavia. It is a country situated in Southeastern Europe, occupying a significant portion of the Balkan Peninsula. Its geography is characterized by mountainous terrain and diverse cultural influences. Croatia: The Republic of Croatia is situated further west than Bosnia and Herzegovina. Bordering the Adriatic Sea, it is also located in Southeastern Europe. Croatia is known for its extensive coastline, numerous islands, and historic cities, reflecting its complex history. Slovenia: The Republic of Slovenia is the westernmost of the four entities listed. Located in Central Europe, it is known for its mountainous landscape, which includes portions of the Alps, as well as its ski resorts and glacial lakes. Slovenia borders Italy, Austria, Hungary, and Croatia. Therefore, the correct sequence of these provinces from the east to west is: 4, 1, 2, 3.
UPSC 2000Science and Technology · Biology: Zoology
Q2790. The blood glucose level is commonly expressed as:
Explanation
Blood glucose levels are commonly measured in milligrams per decilitre (mg/dL). This unit expresses the amount of glucose (in milligrams) present in a decilitre (0.1 liters) of blood. It is the standard measurement used in most clinical settings to monitor and diagnose conditions like diabetes. Other units include millimoles per liter (mmol/L), used in countries like the UK, where 1 mg/dL equals 0.0555 mmol/L.
Answer key for these questions
Q
UPSC year
Correct answer
2781
2000
(c) 1993 - 94
2782
2000
(b) sales tax
2783
2000
(d) Prime Minister’s Rozgar Yojana
2784
2000
(b) 1 and 2
2785
2000
(b) There has been a major political change in June/July
2786
2000
(d) A is false but R is true
2787
2000
(b) Larva
2788
2000
(b) A - 2; B - 3; C - 1; D - 4
2789
2000
(b) 4, 1, 2, 3
2790
2000
(b) milligram per decilitre
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.
