UPSC CSE Prelims · 2021
UPSC Prelims 2021 — Solved Previous Year Questions (PYQs) with Answers
All 83 solved UPSC (IAS) Prelims 2021 previous year questions, subject-wise, each with the correct answer and a detailed explanation. Click any question for its full solution.
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⚖️ Polity & Governance
- Which one of the following factors constitutes the best safeguard of liberty in a liberal democracy?
- What is the position of the Right to Property in India
- What was the exact constitutional status of India on 26th January, 1950?
- With reference to India, consider the following statements: 1. There is only one citizenship and one domicile.…
- ‘Right to Privacy’ is protected under which Article of the Constitution of India?
- A legislation which confers on the executive or administrative authority an unguided and uncontrolled discreti…
- Constitutional government means:
- We adopted parliamentary democracy based on the British model, but how does our model differ from that model? …
- At the national level, which ministry is the nodal agency to ensure effective implementation of the Scheduled …
- With reference to the Union Government, consider the following statements: 1. The N. Gopalaswamy Iyenger Commi…
- With reference to India, consider the following statements: 1. When a prisoner makes out a sufficient case, pa…
- With reference to India, consider the following statements: 1. Judicial custody means an accused is in the cus…
- With reference to India, consider the following statements: (UPSC-2021) 1. There is only one citizenship and o…
🏛️ History & Art-Culture
- With reference to Chausath Yogini Temple situated near Morena, consider the following statements: 1. It is a c…
- Consider the following pairs: Historical place Well known for 1. Burzahom Rock cut shrines 2. Chandraketugarh …
- From the decline of Guptas until the rise of Harshavardhana in the early seventh century, which of the followi…
- With reference to the history of ancient India, Bha- vabhuti, Hastimalla and Kshemeshvara were famous:
- With reference to the history of ancient India, which of the following statements is/are correct? 1. Mitakshar…
- Consider the following statements: 1. The Montagu-Chelmsford Reforms of 1919 recommended granting voting right…
- Who among the following was associated as Secretary with Hindu Female School which later came to be known as B…
- Consider the following statements : 1. St. Francis Xavier was one of the founding members of the Jesuit Order.…
- Consider the following statements: 1. It was during the reign of Iltutmish that Chengiz Khan reached the Indus…
- With reference to Indian history, which of the following statements is/are correct? 1. The Nizamat of Arcot em…
- According to Portuguese writer Nuniz, the women in the Vijayanagara Empire were experts in which of the follow…
- With reference to the history of ancient India, which of the following statements is/are correct? 1. Mitakshar…
- Consider the following statements : 1. Francis Xavier was one of the founding members of the Jesuit Order. 2. …
- Consider the following statements: (2021) 1. The Montagu-Chelmsford Reforms of 1919 recommended granting votin…
- Consider the following statements: (UPSC 2021) 1. It was during the reign of Iltutmish that Chengiz Khan reach…
- Consider the following statements: 1. It was during the reign of Iltutmish that Chengiz Khan reached the Indus…
- Which one of the following ancient towns is wellknown for its elaborate system of water arvesting and manageme…
- With reference to medieval India, which one of the following is the correct sequence in ascending order in ter…
- Consider the following pairs: (UPSC 2021) Historical place Well - known for 1. Burzahom Rock-cut shrines 2. Ch…
- Consider the following pairs: Historical place Well known for 1. Burzahom Rock cut shrines 2. Chandraketugarh …
- Who among the following was associated as Secretary with Hindu Female School which later came to be known as B…
- With reference to Indian history, which of the following statements is/are correct? (UPSC 2021) 1. The Nizamat…
- According to Portuguese writer Nuniz, the women in the Vijayanagara Empire were experts in which of the follow…
🌍 Geography
- Consider the following statements: 1. In the tropical zone, the western sections of the oceans are warmer than…
- The black cotton soil of India has been formed due to the weathering of:
- Consider the following rivers : 1. Brahmani 2. Nagavali 3. Subarnarekha 4. Vamsadhara Which of the above rise …
📈 Economy
- Consider the following statements: 1. The Governor of the Reserve bank of India (RBI) is appointed by the Cent…
- With reference to ‘Urban Cooperative Banks’ in India consider the following statements: 1. They are supervised…
- In India, the central bank’s function as the ‘lender of last resort’ usually refers to which of the following?…
- Consider the following statements: The effect of the devaluation of a currency is that it necessarily: 1. Impr…
- Consider the following: 1. Foreign currency convertible bonds 2. Foreign institutional investment with certain…
- Indian Government Bond Yields are influenced by which of the following? 1. Actions of the United States Federa…
- With reference to India, consider the following statements: 1. Retail investors through Demat account can inve…
- With reference to ‘Water Credit’, consider the following statements: 1. It puts microfinance tools to work in …
🌱 Environment & Ecology
- In nature, which of the following is/are most likely to be found surviving on a surface without soil? 1. Fern …
- Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of th…
- Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Sel…
- In which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of …
- Which of the following have species that can establish a symbiotic relationship with other organisms? 1. Cnida…
- With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in …
- Which one of the following is used in preparing a natural mosquito repellent?
- The vegetation of savannah consists of grassland with scattered small trees, but extensive areas have no trees…
- How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages …
- In the context of India’s preparation for Climate- Smart Agriculture, consider the following statements: 1. Th…
- Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide …
- With reference to furnace oil, consider the following statements: 1. It is a product of oil refineries. 2. Som…
- Magnetite particles, suspected to cause neurodeg- enerative problems, are generated as environmental pollutant…
- The ‘Common Carbon Metric’, supported by UNEP, has been developed for
- What is blue carbon?
- Consider the following animals: 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by pr…
- Consider the following statements: 1. Moringa (drumstick tree) is a leguminous evergreen tree. 2. The Tamarind…
- 'R2 Code of Practices' constitutes a tool available for promoting the adoption of:
🔬 Science & Technology
- Bollgard I and Bollgard II technologies are mentioned in the context of:
- In the context of hereditary diseases, consider the following statements: 1. Passing on mitochondrial diseases…
- The term ‘ACE2’ is talked about in the context of:
- Consider the following statements: 1. Adenoviruses have single stranded DNA genomes whereas retroviruses have …
- With reference to recent developments regarding ‘Recombinant Vector Vaccine’, consider the following statement…
- Which one of the following is a reason why astronomical distances are measured in light-years?
- In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following? …
- Consider the following: 1. Bacteria 2. Fungi 3. Virus Which of the above can be cultured in artificial/synthet…
- With reference to street - lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light …
- Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the follow…
- ‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which o…
- Water can dissolve more substances than any other liquid because
🗞️ Current Affairs
- Consider the following statements: 1. The Global Ocean Commission grants licences for seabed ex- ploration and…
- Consider the following statements in respect of the ICC World Test Championship: 1. The finalists were decided…
- Consider the following statements : 1. 21st February is declared to be the International Mother Lan- guage Day…
- Consider the following statements in respect of the 32nd Summer Olympics: 1. The official motto for this Olymp…
- Consider the following statements in respect of the Laureus World Sports Award which was instituted in the yea…
- Consider the following statements in respect of Bharat Ratna and Padma Awards: 1. Bharat Ratna and Padma Award…
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