GDP, Sectors & Inflation

🎯 Learning Objective

Understand GDP vs GNP, the three sectors of the economy, and the main types of inflation.

💡 Concept

• GDP (Gross Domestic Product) = total money value of all goods & services produced WITHIN a country's borders in one year
• GNP (Gross National Product) = GDP + net income earned by nationals from abroad
• Primary sector = extracts from nature: agriculture, mining, fishing, forestry
• Secondary sector = manufacturing & industry: factories, construction — turns raw material into goods
• Tertiary sector = services: banking, IT, transport, tourism, education — the LARGEST share of India's GDP (~53%)
• Primary sector employs the MOST people in India, even though services produce the most value
• Inflation = a sustained rise in general prices; the purchasing power of money falls
• Demand-pull inflation = demand exceeds supply; Cost-push inflation = rising input/production costs
• Retail inflation is measured by CPI (Consumer Price Index); wholesale by WPI (Wholesale Price Index)
• Deflation = falling prices; Stagflation = high inflation + unemployment together

✏️ Easy Example

Q. Which sector does 'banking and insurance' belong to? (a) Primary (b) Secondary (c) Tertiary (d) Quaternary

1. Banking gives a service, it does not grow crops or build goods
2. Services = Tertiary sector

Answer: (c) Tertiary

🇮🇳 Real-Life Example

When the news says 'retail inflation rose to 5%', it means the CPI basket — the food, fuel and rent an average family buys — costs 5% more than a year ago. Your ₹100 now buys what ₹95 bought last year.

📝 Exam-Level Example

Q. The difference between GDP and GNP is: (a) taxes (b) net factor income from abroad (c) depreciation (d) subsidies

1. GNP counts income of a country's NATIONALS, including what they earn abroad
2. GNP = GDP + net factor income from abroad

Answer: (b) net factor income from abroad

📝 Exam-Level Example

Q. In India, retail inflation is officially measured using which index?

1. Retail = at the consumer's level
2. The Consumer Price Index (CPI) tracks retail prices; RBI targets it for monetary policy

Answer: CPI (Consumer Price Index)

🪄 Memory Trick

Sectors in order = 'PST' → Primary (Prakriti/nature) → Secondary (Sanyantra/factory) → Tertiary (Tehnaat/service). Raw → Made → Served.

⚠️ Common Mistakes

• ❌ Thinking GDP includes income earned abroad (that is GNP, not GDP)
• ❌ Assuming the sector with the most workers also produces the most value (in India it's Primary for jobs, Tertiary for value)
• ❌ Confusing deflation (prices fall) with disinflation (inflation slows but prices still rise)

🏆 Exam Tips

• ✅ Remember one number: services ≈ 53% of India's GDP
• ✅ CPI = retail = what RBI watches; WPI = wholesale

📌 Summary

• GDP = produced within borders; GNP = GDP + net income from abroad
• Primary (nature) → Secondary (factory) → Tertiary (services)
• Tertiary = biggest share of GDP; Primary = most jobs
• CPI measures retail inflation; WPI measures wholesale