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 1541–1550 of 3238 questions
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UPSC 2010Indian Economy · Security Market in India
Q1541. Which of the following is/are treated as artificial currency?
Explanation
Option (c) is correct: Special Drawing Rights (SDR) is considered artificial currency as it is not a physical currency but a reserve asset created by the International Monetary Fund (IMF). It serves as a unit of account for IMF member countries and is used for international transactions and reserve management. The value of SDR is determined based on a basket of five major currencies: US Dollar, Euro, Chinese Yuan, Japanese Yen, and British Pound. Options (a), (b) and (d) are incorrect: ADR (American Depository Receipts) and GDR (Global Depository Receipts) are not currencies but financial instruments used by companies to raise capital from foreign markets. ADRs are financial instruments that represent shares of a foreign company, but they are traded on U.S. stock exchanges (like NYSE or NASDAQ). They allow U.S. investors to invest in non-U.S. companies without dealing with foreign markets or currencies. Example: An Indian company like Infosys can issue ADRs to let American investors buy its shares in the U.S. GDRs are similar to ADRs but are traded on multiple international markets, such as the London or Luxembourg stock exchanges. They help companies raise capital from investors worldwide, not limited to the U.S. Example:
Reliance Industries might issue GDRs to attract investors from Europe, Asia, or other regions.
UPSC 2010General Knowledge · Contemporary Events: India
Q1542. With reference to the National Rehabilitation and Resettlement Policy, 2007, consider the following statements: 1. This policy is applicable only to the persons affected by the acquisition of land for projects and not to the involuntary displacement due to any other reason. 2. This policy has been formulated by the Ministry of Social Justice and Empowerment Which of the statements given above is/ are correct?
Explanation
The National Rehabilitation and Resettlement Policy (NRRP), 2007 was introduced to address displacement caused by land acquisition for development projects.
Statement 1 is Incorrect: The NRRP, 2007 covers not only people displaced due to land acquisition but also those affected by involuntary displacement due to other reasons, such as government projects, natural disasters, or conflicts.
Statement 2 is Incorrect: The NRRP, 2007 was formulated by the Ministry of Rural Development, not the Ministry of Social Justice and Empowerment.
UPSC 2010Science and Technology · Chemistry: Environmental Chemistry
Q1543. Consider the following: 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain?
Explanation
Acid rain occurs when certain pollutants in the atmosphere react with water vapor to form acids, which then fall to the ground as rain, snow, or fog. The pollutants responsible for acid rain are primarily oxides of nitrogen and oxides of sulfur.
Option 1 is incorrect: Hydrogen itself does not form acidic oxides under typical environmental conditions. The concept of oxides of hydrogen is not commonly associated with acid rain.
Option 2 is correct: Nitrogen oxides, such as nitrogen dioxide, combine with water vapor in the atmosphere to form nitric acid, which contributes to acid rain.
Option 3 is correct: Sulfur oxides, such as sulfur dioxide, react with water vapor to form sulfuric acid, which is another major contributor to acid rain.
UPSC 2010Science and Technology · Chemistry: Environmental Chemistry
Q1544. Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition?
Explanation
When carbon monoxide (CO) is inhaled, it binds to hemoglobin in red blood cells with a much stronger affinity than oxygen. Hemoglobin normally binds to oxygen to transport it throughout the body, but CO binds more tightly, forming carboxyhemoglobin. This reduces the ability of hemoglobin to carry oxygen effectively, leading to a decrease in oxygen supply to vital organs and tissues. Carbon monoxide (CO) has approximately 200-250 times more affinity for hemoglobin than oxygen, which means it competes with oxygen for binding sites on hemoglobin.
UPSC 2010Indian Economy · Important Concepts in Economy
Q1545. Which of the following terms indicates a mechanism used by commercial banks for providing credit to the government?
Explanation
Statutory Liquidity Ratio (SLR) refers to the minimum percentage of a commercial bank’s net demand and time liabilities (NDTL) that it must maintain in the form of liquid assets such as government securities (G-Secs), cash, or gold before offering credit to customers. Commercial banks are required by the Reserve Bank of India (RBI) to maintain this percentage to ensure liquidity and stability in the financial system. Since banks invest in government securities to meet their SLR requirements, it effectively becomes a source of credit to the government, as the government raises funds through the issuance of bonds and securities. Options (a), (b) and (c) are incorrect:
Cash Credit Ratio (CRR) is the percentage of NDTL that banks must keep with the RBI in cash. Unlike SLR, CRR does not directly help in providing credit to the government because it is meant to control liquidity in the economy and not to finance government debt. Debt Service Obligation (DSO) refers to the government’s or an entity’s obligation to repay debt, including principal and interest. It is a measure of a borrower’s ability to repay loans but is not a mechanism used by banks to provide credit to the government. Liquidity Adjustment Facility (LAF) is a tool used by the RBI to manage liquidity in the banking system through repo and reverse repo operations. It is not specifically meant for providing credit to the government but rather for controlling short-term liquidity in the economy.
UPSC 2010Indian Economy · Important Concepts in Economy
Q1546. With reference to the Non-banking Financial Companies (NBFCs) in India, consider the following statements: 1. They cannot engage in the acquisition of securities issued by the government. 2. They cannot accept demand deposits like Savings Account Which of the statements given above is/ are correct?
Explanation
A non-banking financial company (NBFC) is a company registered under the Companies Act, 1956 that provides banking services without holding a banking license. It is regulated by the RBI under the RBI Act, 1934. It engaged in the business of loans and advances, acquisition of shares/stocks/bonds/debentures/securities issued by Government or local authority or other marketable securities of a like nature, leasing, hire-purchase, insurance business, chit fund business but does not include any institution whose principal business is that of agriculture activity, industrial activity, purchase or sale of any goods (other than securities) or providing any services and sale/purchase/construction of immovable property. Difference Between NBFCs and Banks Feature NBFCs Banks Regulator RBI (Non-Banking Financial Companies Division) RBI (Banking Regulation Act) Accepts Demand Deposits (Savings & Current Accounts)? No Yes Part of Payment and Settlement System? No Yes Can Issue Cheques? No Yes Lending Activities? Yes Yes
Statement 1 is incorrect: NBFCs can engage in the acquisition of government securities. Many NBFCs invest in government securities as part of their portfolio management and liquidity management strategies. The RBI allows NBFCs to invest in government securities, subject to certain regulations.
Statement 2 is correct: NBFCs are not allowed to accept demand deposits. They can only accept fixed deposits (FDs) with specific regulatory approvals from the Reserve Bank of India (RBI).
UPSC 2010Indian Economy · Important Concepts in Economy
Q1547. In the parlance of financial investments, the term ‘bear’ denotes:
Explanation
In financial terminology, a "bear" refers to an investor who anticipates that the price of a particular security or the overall market will decline. Acting on this belief, such investors may engage in strategies like short selling, where they sell securities they do not currently own with the intention of re-purchasing them later at a lower price, thereby securing a profit. Options (b), (c) and (d) are incorrect:
An investor who expects prices to rise is called a bull, not a bear. Bulls are optimistic about the market and buy securities with the expectation of selling them at higher prices in the future. A shareholder or bondholder is simply an investor who owns shares or bonds, regardless of their market outlook. A lender or bondholder is not necessarily a bear. A bear is specifically an investor with a pessimistic outlook on the market or a security.
UPSC 2010Science and Technology · Biology: Botany
Q1548. Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?
Explanation
Maize is widely cultivated for the production of ethanol, which is used as a biofuel. Ethanol is derived from the fermentation of sugars and starches found in maize kernels. The United States and Brazil are among the largest producers of maize-based ethanol, which serves as a renewable energy source and an alternative to fossil fuels. Options (a), (c), and (d) are incorrect:
Jatropha is primarily cultivated for its seeds, which contain oil that can be converted into biodiesel. It is not used for ethanol production because it does not contain significant amounts of starch or sugars that can be fermented into ethanol. Pongamia (also known as Millettia pinnata) is an oilseed crop. Its seeds contain oil that are used popularly for biodiesel for biodiesel production, not ethanol. Sunflower is primarily grown for edible oil production, sunflower does not have the starch or sugar content necessary for ethanol production.
UPSC 2010Indian Economy · Important Concepts in Economy
Q1549. In India, the interest rate on savings accounts in all the nationalized commercial banks is fixed by
Explanation
In India, the interest rates on savings accounts were de-regulated by the Reserve Bank of India (RBI) in 2011. This deregulation allowed individual banks to set their own interest rates on savings deposits. At the time when question was asked they were fixed by RBI, which now stands deregulated.
UPSC 2010Science and Technology · Biology: Botany
Q1550. Some species of plants are insectivorous. Why?
Explanation
Insectivorous plants like Venus flytraps and pitcher plants grow in nitrogen-poor, acidic, or waterlogged soils. They capture and digest insects to obtain essential nutrients such as nitrogen and phosphorus which are scarce in their environment. This adaptation allows them to thrive in nutrient-deficient habitats where other plants struggle. Though they perform photosynthesis but their carnivorous behavior supplements their nutritional needs which enables them to survive in challenging conditions.
Answer key for these questions
Q
UPSC year
Correct answer
1541
2010
(c) SDR
1542
2010
(d) Neither 1 nor 2
1543
2010
(c) 2 and 3 only
1544
2010
(b) The inhaled CO has much higher affinity for haemoglobin as compared to oxygen.
1545
2010
(d) Statutory Liquidity Ratio
1546
2010
(b) 2 only
1547
2010
(a) An investor who feels that the price of a particular security is going to fall
1548
2010
(b) Maize
1549
2010
(d) None of the above
1550
2010
(b) They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.
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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.
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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.