Economics

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Economics — Quick Facts for SSC CGL

Basic Concepts:

Demand: The quantity of a good that consumers are willing and able to buy at various prices during a given period.

• Law of Demand: Other things being equal, as price falls, quantity demanded rises (inverse relationship)
• Exceptions: Giffen goods (inferior goods where price rise increases demand), Veblen goods (luxury goods — higher price signals prestige), speculative goods (expectation of future price rise)
• Factors affecting demand: Income, tastes and preferences, price of related goods (substitutes and complements), expectations, number of buyers

Supply: The quantity of a good that producers are willing to sell at various prices.

• Law of Supply: As price rises, quantity supplied rises (direct relationship)
• Exceptions: Agricultural products (seasonal), perishable goods, goods with fixed supply (art, antiques)
• Factors affecting supply: Price of factors of production, technology, expectations, number of sellers, government policies (taxes/subsidies)

Elasticity of Demand:

Type	Formula	Meaning
Price elasticity (Ed)	%ΔQd / %ΔP	Responsiveness of Qd to price change
Income elasticity (Ey)	%ΔQd / %ΔY	Responsiveness to income change
Cross elasticity (Exy)	%ΔQd of X / %ΔP of Y	Effect of related good’s price on X

• Ed > 1: Elastic (luxuries — consumers are price sensitive)
• Ed = 1: Unitary elastic
• Ed < 1: Inelastic (necessities — salt, medicines, petrol)
• Ed = 0: Perfectly inelastic (no change in Qd regardless of price)

⚡ Exam tip: Perfectly inelastic demand (Ed = 0) is a theoretical extreme — vertical demand curve. Inelastic demand (0 < Ed < 1) has a steeper curve. For SSC CGL, know that salt, medicines, petrol are inelastic.

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🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

Economics — SSC CGL Study Guide

National Income Concepts:

Concept	Definition	Formula
GDP (Gross Domestic Product)	Total market value of all final goods and services produced within a country’s border in a year	—
GNP (Gross National Product)	GDP + Net Factor Income from Abroad (NFIA)	GDP + NFIA
NNP (Net National Product)	GNP − Depreciation (Capital consumption allowance)	GNP − Depreciation
National Income (NNP at factor cost)	NNP − Indirect Taxes + Subsidies	—
Per Capita Income	National Income / Population	—

India’s National Income:

• Base year currently used: 2011–12 (changed from 2004–05)
• Central Statistics Office (CSO) calculates national income
• GDP vs GVA: GDP = GVA (Gross Value Added) + Taxes − Subsidies
• India is the world’s 5th or 6th largest economy by GDP (as of 2024)

Inflation:

• Definition: Sustained increase in general price level over time
• Types: Demand-pull (too much money chasing too few goods), Cost-push (rising production costs)
• Measured by: Wholesale Price Index (WPI — measures price at wholesale level) and Consumer Price Index (CPI — measures retail price, more relevant for consumers)
• India’s inflation target: 4% (+/− 2% tolerance) under the RBI’s flexible inflation targeting framework

Types of Markets:

Market	Features	Examples
Perfect Competition	Many buyers and sellers; homogeneous product; no single firm can influence price; free entry/exit	Agricultural commodities (wheat, rice)
Monopoly	Single seller; no close substitutes; barriers to entry	Local electricity distribution, Indian Railways (passenger)
Monopolistic Competition	Many sellers; differentiated products; some control over price through branding	Restaurants, toothpaste (multiple brands)
Oligopoly	Few sellers; interdependence; can be collusive (cartels) or competitive	Automobile industry, telecom (Jio, Airtel, Vi)

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🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

Economics — Comprehensive Notes

Money and Banking:

Functions of Money:

• Medium of exchange (accepted in payment for goods/services)
• Unit of account (measures value of all goods)
• Store of value (can be saved for future use)
• Standard of deferred payment (used for credit transactions)

Money Supply Measures in India (RBI):

• M0 (Monetary Base): Currency in circulation + Bankers’ deposits with RBI + Other deposits with RBI
• M1: Currency with public + Demand deposits (current, savings accounts) + Other deposits with RBI
• M2: M1 + Post office savings deposits
• M3: M1 + Time deposits (savings + fixed deposits) with banks — broadest measure used by RBI
• M4: M3 + All post office deposits (excluding NSC)

Commercial Banking:

• Functions: Accepting deposits (current, savings, fixed); giving loans (cash credit, overdraft, term loans, demand loans); discount of bills; agency functions (cheques, collections)
• Priority Sector Lending: Agriculture, small and medium enterprises, education, housing, micro-credit (target: 40% of net bank credit for domestic commercial banks)

Central Bank (Reserve Bank of India — RBI):

• Established: 1 April 1935 (Nationalised in 1949)
• Governor: Urjit Patel (2016–2022), Shaktikanta Das (2022–present)
• Functions:
  • Issue of currency notes (except ₹1 note — issued by Finance Ministry)
  • Banker to the Government
  • Banker to Commercial Banks (maintains accounts, provides liquidity)
  • Lender of last resort (banks can borrow in crisis)
  • Exchange control (Regulates foreign exchange)
  • Credit control (Monetary Policy — Repo Rate, CRR, SLR)

Monetary Policy Tools:

Tool	Description	Effect
Repo Rate	Rate at which RBI lends to banks (short-term)	↑ Repo → ↑ cost of borrowing → ↓ inflation
Reverse Repo Rate	Rate at which RBI borrows from banks	↑ Reverse Repo → banks park more with RBI → ↓ money supply
CRR (Cash Reserve Ratio)	% of NDTL banks must maintain with RBI	↑ CRR → ↓ lending capacity
SLR (Statutory Liquidity Ratio)	% of NDTL banks must maintain in liquid assets (cash, gold, govt securities)	↑ SLR → ↓ available for lending
MSF (Marginal Standing Facility)	Emergency borrowing by banks from RBI at repo rate + 100 basis points	Provides liquidity in crisis

Fiscal Policy (Government):

• Budget: Annual financial statement of receipts and expenditure
• Tax Revenue: Direct (income tax, corporate tax — progressive) vs Indirect (GST, customs — regressive)
• GST (Goods and Services Tax): Implemented 1 July 2017; subsumed multiple indirect taxes (excise, service tax, VAT); 3 rates: 5%, 12%, 18%, 28% + 0% for essentials
• Government expenditure: Capital expenditure (infrastructure) vs Revenue expenditure (salaries, subsidies)
• Fiscal deficit: Total expenditure − total receipts (excluding borrowings; indicates how much government is borrowing)

Five Year Plans (India):

Plan	Period	Focus
1st	1951–56	Agriculture, community development
2nd	1956–61	Industrialisation (Mahalanobis model)
3rd	1961–66	Agriculture + Industry
4th	1969–74	Self-reliance
5th	1974–79	Employment, poverty alleviation
6th	1978–80	Infrastructure
7th	1980–85	Poverty alleviation, employment
8th	1992–97	Industrial growth, fiscal reforms
9th	1997–2002	Growth with justice
10th	2002–07	Infrastructure, health, education
11th	2007–12	Inclusive growth, agriculture
12th	2012–17	Faster, more inclusive, sustainable growth

NITI Aayog replaced Planning Commission in 2015.

RBI’s Role in Controlling Inflation: When inflation rises above target (4%), RBI uses contractionary monetary policy:

• ↑ Repo rate → banks ↑ lending rates → borrowing ↓ → demand ↓ → prices ↓
• ↑ CRR/SLR → reduces banks’ ability to lend → money supply ↓
• Open Market Operations (OMO): RBI sells government securities to absorb excess liquidity

NEET/SSC Pattern Analysis: Economics in SSC CGL focuses on Indian economic concepts, current economic policies, and basic definitions. Key areas: National Income concepts (GDP, GNP, NNP), types of inflation, elasticity of demand, monetary policy tools, and recent economic developments (GST rates, inflation targeting).

⚡ SSC CGL 2022 Qn: Which is the most liquid measure of money supply in India? Answer: M0 (Monetary Base) — it includes the most liquid components: currency in circulation (notes and coins) + deposits of commercial banks with RBI. M0 is also called “reserve money.”