Economics - I : Previous Year Questions (2025)

PART – A

Q1. What is economic problem.

Ans. Economic problem is the fundamental challenge of meeting unlimited human wants with limited resources. Since resources are scarce and have alternative uses, individuals and societies must make choices about how to use them.

Because of scarcity, every economy must answer:

1. What to produce? – Which goods and services should be produced?
2. How to produce? – What methods and resources should be used?
3. For whom to produce? – Who will receive the goods and services produced?

Q2. Define static economic analysis.

Ans. Static Economic Analysis is the study of economic variables at a particular point of time, assuming no change in factors such as capital, population, production methods, business organizations, and people's wants. According to J. B. Clark, a static economy is one in which these changes are absent.

Q3. What is concept of change in quantity demanded?

Ans. A change in quantity demanded refers to a change in the specific amount of a good or service that consumers are willing and able to buy, caused only by a change in its own price, while all other factors remain constant (ceteris paribus). It is represented by a movement from one point to another on the same demand curve.

Q4. What is Law of supply?

Ans. The Law of Supply states that, other things remaining constant, the quantity supplied of a commodity varies directly with its price. Thus, when the price of a commodity rises, its supply increases, and when the price falls, its supply decreases. Therefore, there is a positive relationship between price and quantity supplied.

Q5. Define perfectly elastic demand for a good.

Ans. Perfectly elastic demand describes a situation where any price increase, even a tiny one, leads to a complete drop in quantity demanded to zero. In a perfectly elastic demand situation, the price elasticity of demand is equal to infinity. This occurs when there are numerous perfect substitutes available, and consumers will switch to a different product immediately if the price of one good increases. The demand curve for a perfectly elastic demand is a horizontal line.

Q6. What is oligopoly problem?

Ans. The oligopoly problem arises because a few large firms dominate the market and are mutually interdependent. Each firm's pricing and output decisions affect its rivals, creating uncertainty. Firms face a dilemma between cooperating (colluding) to earn higher profits and competing independently, which may lead to price wars and reduced profits. Mutual interdependence among a small number of firms is the central problem of oligopoly.

Q7. What is a flow variable?

Ans. The flow concept refers to an economic variable that is measured over a period of time, such as a month, quarter, or year. For eg.:  income, expenses, investment, consumption, and national income.

Q8. Define real GNP.

Ans. When national income is expressed in terms of constant price or price prevailing in the base year, it is called real national income. It is measured in terms of constant prices and the base year is one which is free from fluctuations or there is a little possibility of fluctuation.

Q9. What is transaction demand for money?

Ans. Transaction demand for money refers to the amount of money people hold to carry out their day-to-day transactions, such as buying goods and services and making regular payments. It depends mainly on a person's income and the frequency of receipts and expenditures. It generally increases as income rises.

Q10. Define Poverty.

Ans. Poverty is a situation in which a person is unable to fulfil the basic necessities of life such as food, clothing, shelter, education, health care, and safe drinking water.

PART – B

Q11. Explain causes of rural poverty in India.

Ans. Rural poverty in India is primarily driven by a heavy reliance on volatile agricultural systems, severe underemployment, and unequal land distribution. These core factors are deeply compounded by rapid population growth, inadequate rural infrastructure, and systemic social inequalities that trap households in a cycle of destitution.

1. Agricultural Vulnerabilities - Rural economies rely heavily on rain-fed agriculture. Erratic rainfall, droughts, and floods severely damage crops, leading to massive financial losses for small-scale farmers. Yields remain low due to fragmented landholdings, lack of capital for modern equipment, and continued reliance on traditional farming methods. Unpredictable market prices for crops and a lack of proper cold-storage facilities result in post-harvest losses and distress selling.
2. Unemployment and Underemployment - Agriculture largely provides seasonal employment, leaving rural labourers with little to no income for several months of the year. Because of limited job alternatives, too many workers rely on a single small plot of land, meaning their actual contribution to output is minimal; disguised unemployment.
3. Land Ownership Issues - Successive generations lead to subdivided and smaller landholdings. Many small farmers are left with plots too small to be economically viable. A significant portion of the rural population consists of landless labourers who have no assets to generate independent income or use as collateral.
4. Demographic and Social Factors - Unchecked population growth increases the strain on limited land and resources, shrinking the average income per capita. Deep-rooted caste hierarchies and discrimination often exclude marginalized communities from better economic opportunities, land ownership, and education.
5. Lack of Infrastructure and Education - Lack of proper roads and transportation limits access to larger markets and better-paying jobs. Low literacy rates and poor access to quality healthcare limit skill development, preventing workers from transitioning to non-agricultural sectors.
6. Socio-Cultural Customs and Indebtedness - Traditional customs often pressure rural households to spend disproportionately large amounts on social ceremonies (marriages, funerals), pushing them to take out high-interest loans from informal moneylenders. Spiralling debt from moneylenders and high medical costs often trap families in generational poverty, wherein a major portion of their earnings goes toward merely paying off interest.

Addressing these root causes requires a mix of agricultural modernization, rural industrialization, and targeted social welfare schemes.

Q12. Analyse the effects of money on prices.

Ans. Money has a significant effect on the price level in an economy. The relationship between money and prices is explained by the Quantity Theory of Money, which states that, other things remaining constant, changes in the quantity of money lead to corresponding changes in the general price level.

1. Increase in Money Supply

When the supply of money increases, people have more money to spend. This increases the demand for goods and services. If the production of goods and services does not increase at the same rate, excess demand pushes prices upward. This rise in the general price level is known as inflation. Thus, an excessive increase in money supply tends to reduce the purchasing power of money.

2. Decrease in Money Supply

A reduction in the money supply decreases people's purchasing power and spending capacity. As demand for goods and services falls, producers may lower prices to attract buyers. This can lead to a fall in the general price level, known as deflation. Prolonged deflation may also reduce profits, investment, and employment.

3. Quantity Theory of Money

According to economists such as Irving Fisher, the general price level is directly related to the quantity of money in circulation, assuming the velocity of money and the volume of transactions remain constant. In simple terms, when more money chases the same quantity of goods, prices rise; when less money is available, prices tend to fall.

4. Impact on Economic Activity

The effect of money on prices depends on the level of economic activity. When resources are underutilized and unemployment exists, an increase in money supply may first increase production, income, and employment with only a small rise in prices. However, after the economy reaches full employment, any further increase in money supply mainly results in higher prices rather than higher output.

Conclusion

Therefore, money is an important determinant of the price level. Changes in the supply of money influence purchasing power, demand, production, and inflation. While a moderate increase in money supply can promote economic growth, an excessive increase generally leads to a rise in prices and inflation.

Q13. Explain circular flow of income in a two sector economy.

Ans. The circular flow of income is an economic model illustrating the continuous movement of money, goods, and services between different sectors of an economy, such as households and firms, showing how income is generated, distributed, and spent. 

Households render factor services to the firms and receive factor income, which will be spent on purchase of goods and services produced by the firms. Income received from the sale of goods and services becomes equal to factor payments made to the factors of production.

In every economy, 3 activities never stop: -

1. Production of goods and services.
2. Generation of income (wages, interest, rent, profit).
3. Expenditure (consumption expenditure and investment expenditure).

• These activities are ‘lifeline of an economy.’
• Difficult to trace the beginning and end.
• Production, income and expenditure, are flow variables.
• Existence like a circle, without a beginning and an end.

Phases of Circular Flow of Income:

1. Generation/Production Phase – firms produce goods and services by utilising goods and services (such as land, labour, capital and entrepreneurship) provided by households.
2. Distribution/Income Phase – flow of factor income from firms to households, in exchange for their services (wages, rent, interest, profit).
3. Disposition/Expenditure Phase – households spend income received by factors of production on the goods and services produced by the firms. This spending creates the demand for goods and services, which in turn allows firms to generate revenue and continue the production process, restarting the cycle.

Q14. Explain determination of price with the help of demand and supply forces. What happens with price when demand increases?

Ans. Price is determined by the interaction of demand and supply in a market. Demand refers to the quantity of a commodity that consumers are willing and able to buy at different prices. Supply refers to the quantity of a commodity that producers are willing and able to sell at different prices.

The market price is determined at the point where the quantity demanded equals the quantity supplied. This point is called the equilibrium point, and the corresponding price is called the equilibrium price.

Determination of Price

1. When demand equals supply - When the quantity demanded by consumers is equal to the quantity supplied by producers, the market reaches equilibrium. At this point, the price remains stable because there is neither a shortage nor a surplus of the commodity.
2. When demand exceeds supply - If consumers demand more of a product than producers can supply, a shortage occurs in the market. Due to increased competition among buyers, sellers raise the price of the commodity.
3. When supply exceeds demand - When producers supply more goods than consumers are willing to buy, a surplus is created. To sell their excess stock, sellers reduce the price, causing the market price to fall.
4. Equilibrium Price - The price at which demand and supply are equal is known as the equilibrium price. It is determined by the interaction of market forces and is considered the normal market price.

Effects of an Increase in Demand

When demand increases while supply remains unchanged, more consumers want to buy the commodity at the existing price. This creates a shortage in the market, leading sellers to increase the price. As a result, a new equilibrium is established at a higher price level and a greater quantity sold.

PART – C

Q15. Define capitalism. Discuss characteristics of capitalism.

Ans. Capitalism is an economic system in which the means of production such as land, factories, machines, and other resources are privately owned and operated for profit. In a capitalist economy, economic decisions regarding production, investment, and distribution are mainly guided by market forces of demand and supply. It encourages individual initiative, entrepreneurship, and competition.

Key Features of Capitalism

1. Private Property Rights - Private ownership is the foundation of capitalism. Individuals and business firms have the right to own, use, transfer, and inherit property. Owners are free to utilize their resources in any lawful manner to earn income and profits.
2. Market Economy - In a capitalist system, prices, production, and distribution are largely determined by market forces. Demand and supply decide what goods will be produced, how much will be produced, and at what price they will be sold. Government intervention is generally limited.
3. Profit Motive - The main objective of producers and entrepreneurs is to earn maximum profit. The desire to increase profits motivates businesses to improve efficiency, reduce costs, and introduce new products and services.
4. Competition - There is free competition among producers and sellers. Firms compete to attract customers by offering better quality goods, lower prices, and improved services. Competition promotes efficiency and innovation in the economy.
5. Wage Labour System - Most people do not own productive resources and therefore work for wages or salaries. Workers sell their labour to employers, who use it in the production process.
6. Freedom of Enterprise - Individuals are free to choose their occupation, start businesses, make investments, and take economic decisions according to their interests and abilities.
7. Consumer Sovereignty - Consumers play an important role in determining production. Producers attempt to satisfy consumer wants because consumer demand influences market prices and profits.

Advantages of Capitalism

1. Economic Efficiency - Competition encourages firms to use resources efficiently and minimise waste, resulting in higher productivity.
2. Innovation and Technological Progress - The profit motive encourages entrepreneurs to develop new products, adopt modern technology, and improve production methods.
3. Wide Consumer Choice - Consumers enjoy a large variety of goods and services and can choose products according to their preferences and purchasing power.
4. Economic Growth - Investment, entrepreneurship, and capital formation contribute to higher production, employment, and national income.
5. Individual Freedom - People have the freedom to own property, choose occupations, invest capital, and conduct business activities.

Disadvantages of Capitalism

1. Economic Inequality - Wealth and income may become concentrated in the hands of a small group of people, leading to significant social and economic disparities.
2. Exploitation of Labour - In the pursuit of higher profits, some firms may pay low wages or provide poor working conditions to workers.
3. Economic Instability - Capitalist economies are prone to business cycles involving periods of boom, recession, unemployment, and financial crises.
4. Monopoly and Concentration of Power - Large firms may dominate markets, reducing competition and harming consumer interests.
5. Environmental Problems - The pursuit of profit may lead to excessive exploitation of natural resources, pollution, and environmental degradation.

Conclusion

Capitalism is a system based on private ownership, profit motive, and free market competition. It promotes economic growth, innovation, and consumer choice, but it can also result in inequality, economic instability, and environmental concerns. Therefore, many modern economies adopt a mixed approach where capitalism operates alongside government regulation to balance efficiency with social welfare.

Q17. Define consumer surplus. Measure consumer surplus under the cardinal utility approach.

Ans. Popularized by Alfred Marshall, Consumer Surplus (CS) is the economic measure of consumer benefit. It is defined as the difference between what a consumer is willing to pay for a good or service rather than go without it, and what they actually pay.

In Marshall’s words: “The excess of the price which he would be willing to pay rather than go without the thing, over that which he actually does pay, is the economic measure of this surplus of satisfaction. It may be called consumer surplus.”

Measurement under Cardinal Utility Approach

The cardinal approach assumes that utility is quantifiable and can be measured in monetary terms. Consumer Surplus is calculated as the difference between Total Utility (TU) derived from a commodity and the total expenditure spent on it (P x Q).

Formula: CS = TU – [P x Q]

• CS = Consumer Surplus
• TU = Total Utility (expressed in monetary terms)
• P = Market Price per unit
• Q = Quantity consumed

The measurement operates on the Law of Diminishing Marginal Utility (DMU). A consumer derives high satisfaction (Marginal Utility) from the first unit and is willing to pay a premium. As consumption increases, the satisfaction from successive units drops. The consumer stops purchasing when the Marginal Utility matches the market price (MU = P). For all prior units, the consumer gains a surplus because their willingness to pay exceeded the actual price.

Suppose the market price of an apple is ₹20. A consumer purchases 4 apples. The step-by-step breakdown of their consumer surplus is shown below:

Assumptions related to Consumer Surplus

1. Cardinal Measurement: Utility is a numerical, quantifiable concept (e.g., measured in utils or currency).
2. Constant Marginal Utility of Money: The utility derived from money remains unchanged regardless of changes in income or spending.
3. Operation of Diminishing Utility: The satisfaction from additional units continuously declines.
4. No Substitutes: The product operates in isolation with no close substitutes available in the market.

Consumer Surplus as a Relative Concept

Consumer surplus is dynamic because utility itself is a psychological and relative concept.

1. Person to Person: A wealthy consumer and a low-income consumer may pay the same price for an item, but their willingness to pay differs drastically based on the subjective value of money.
2. Time to Time: A consumer’s surplus for cold beverages is significantly higher during summer than in winter.
3. Commodity to Commodity: For basic necessities (like water or basic clothing) where prices are very low, consumer surplus is incredibly high compared to luxury items, where market prices closely trace a buyer's exact valuation.

Major Criticisms

1. Unrealistic Premises: Modern economists state that utility cannot be measured in numbers (it is ordinal, not cardinal) and that the marginal utility of money fluctuates as a person spends.
2. Imaginary and Illusory: Predicting a hypothetical “willingness to pay” is highly subjective, making the calculated surplus purely theoretical.
3. Meaningless for Necessities: In the case of life-saving drugs or drinking water, a consumer’s willingness to pay is infinite, making the formula practically useless.
4. Lack of Practical Utility: Due to its restrictive assumptions, businesses and policymakers find it difficult to apply these exact numeric values to real-world tax systems or pricing models.

Thus, Consumer Surplus measures the extra satisfaction obtained by consumers when they pay less than the maximum amount they are willing to pay. Although the concept is based on restrictive assumptions and faces practical limitations, it remains an important tool for understanding consumer welfare.

Q18. Distinguish between pure and perfect competition. Describe the properties of perfect competition.

Ans. Pure Competition and Perfect Competition are market structures characterized by a large number of buyers and sellers and the absence of monopoly power. However, Perfect Competition is broader and more idealized than Pure Competition.

Pure Competition refers to a market characterized by a large number of buyers and sellers dealing in homogeneous products.

Perfect Competition refers to a market in which all conditions of pure competition exist along with perfect knowledge, free mobility of factors, and absence of transport costs.

Properties of Perfect Competition

Perfect competition is a market structure where an individual firm acts purely as a price taker, meaning it has no power to influence the market price determined by industry demand and supply.

Its core properties include:

1. Large Number of Buyers and Sellers - The market consists of so many buyers and sellers that no single individual can influence the market price or total supply. An individual firm’s output is a mere drop in the ocean; hence, it accepts the prevailing market price.
2. Homogeneous Product - All firms sell an identical product in terms of size, shape, quality, packaging, and branding. Because the goods are perfect substitutes for one another, no firm can charge a higher price than its competitors. Therefore, a single uniform market price prevails.
3. Free Entry and Exit of Firms - There are zero legal, social, or technological barriers preventing new firms from entering the market or existing firms from leaving. In the long run, this ensures that firms earn only normal profits. If abnormal profits exist, new firms enter and drive prices down; if losses occur, firms exit, raising prices back to equilibrium.
4. Perfect Knowledge of Market Conditions - Both buyers and sellers possess complete, transparent information regarding product availability, technology, and prevailing market prices. This prevents any firm from exploiting consumers by charging a higher price.
5. Perfect Mobility of Factors of Production - Factors of production (labour, capital, raw materials) can move instantly and without cost from one firm to another or from one industry to another. This ensures that factor rewards (wages, interest) remain uniform across the economy.
6. Absence of Transport and Selling Costs - It is assumed that all producers operate in close proximity or that transport is costless, ensuring a single uniform price across the entire market. Furthermore, since products are perfectly homogeneous and consumers know everything, there is no need for advertising or selling expenditures.

Thus, perfect competition is an ideal market structure characterized by complete freedom, perfect information, and absence of monopoly power. Though rarely found in practice, it serves as an important benchmark for economic analysis.