National income accounting measures the value of final goods and services produced by an economy during a year. Economists use product, income and expenditure methods to calculate the same aggregate output.
National income numbers become clear when students track where output, income and spending meet. Important Questions Class 12 Macro Economics Chapter 2 help CBSE 2026 students revise National Income Accounting through definitions, formulas, identities and numerical questions. The NCERT 2026-27 chapter covers final goods, intermediate goods, stocks, flows, depreciation, circular flow of income, GDP methods, GNP, NNP, PI, PDI, nominal GDP, real GDP, price indices and GDP welfare limits.
Key Takeaways
- GDP Identity: GDP can be measured through product, expenditure and income methods.
- Double Counting: Intermediate goods must be excluded because their value already appears in final goods.
- Net Investment: Net Investment = Gross Investment - Depreciation.
- GDP Welfare Limit: GDP may miss income distribution, non-monetary exchanges and externalities.
Important Questions Class 12 Macro Economics Chapter 2 Structure 2026
| Concept |
Formula |
Exam Focus |
| GDP by Expenditure |
GDP = C + I + G + X - M |
Aggregate demand |
| GNP |
GNP = GDP + NFIA |
National income identities |
| National Income |
NI = NNPmp - Net Indirect Taxes |
Numerical questions |
Important Questions Class 12 Macro Economics Chapter 2: CBSE 2026 Exam Focus
National Income Accounting connects production, income and expenditure in one circular system. A numerical question can use any one of these routes.
CBSE 2026 questions can ask formulas, differences, identity-based numericals and conceptual answers from NCERT Chapter 2.
1. What is National Income Accounting in Class 12 Macroeconomics?
National Income Accounting measures aggregate income, output and expenditure of an economy during a year. It records final goods and services in money terms.
It avoids double counting by excluding intermediate goods.
It also explains GDP, GNP, NNP, NI, PI and PDI.
2. What is the main idea of Chapter 2 National Income Accounting?
The main idea is that an economy’s output, income and expenditure are equal in aggregate. Firms produce goods and services.
Households earn factor incomes.
Households then spend income on final goods and services.
3. Why does NCERT use circular flow of income?
NCERT uses circular flow to show how income moves between households and firms. Households provide factors of production.
Firms pay wages, rent, interest and profit.
Households spend this income on goods and services produced by firms.
4. Why are final goods counted in national income?
Final goods are counted because they do not undergo further production. Their value reflects the completed output.
Intermediate goods already form part of final goods.
Counting both causes double counting.
5. Why is money used as a common measuring rod?
Money helps add different goods and services in one value measure. Rice, cloth and cars have different physical units.
Their market values can be added in rupees.
This gives aggregate final output.
Class 12 Macro Economics Chapter 2 Questions and Answers for NCERT Exercise
NCERT exercise questions give the clearest board-style base. They cover definitions, identities, numerical problems and welfare limitations.
Class 12 Macro Economics Chapter 2 questions and answers should use exact formulas and clean working.
6. What are the four factors of production and their remunerations?
The four factors are labour, capital, entrepreneurship and land. Their remunerations are wages, interest, profit and rent.
| Factor of Production |
Remuneration |
| Labour |
Wages |
| Capital |
Interest |
| Entrepreneurship |
Profit |
| Land |
Rent |
These factor payments form the income method of GDP.
7. Why should aggregate final expenditure equal aggregate factor payments?
Aggregate final expenditure equals aggregate factor payments because firms distribute sales revenue as factor income. Households buy final goods and services.
Firms receive expenditure as revenue.
Firms pay this revenue to factor owners as wages, rent, interest and profit.
8. Distinguish between stock and flow.
A stock measures quantity at a point of time, while a flow measures quantity over a period. Capital is a stock.
Income is a flow.
Water in a tank is stock, while water entering per minute is flow.
9. Between net investment and capital, which is stock and which is flow?
Capital is a stock, while net investment is a flow. Capital exists at a point of time.
Net investment occurs during a period.
Net investment adds to the capital stock after depreciation.
10. What is the difference between planned and unplanned inventory accumulation?
Planned inventory accumulation is intended by firms, while unplanned inventory accumulation occurs unexpectedly. Planned accumulation follows business decisions.
Unplanned accumulation happens when sales fall below expected sales.
NCERT explains this with a shirt inventory example.
11. Write the relation between change in inventories and value added of a firm.
Change in inventories equals production during the year minus sales during the year.
Change in inventories = Production during the year - Sales during the year
Since production = value added + intermediate goods used:
Change in inventories = Value added + Intermediate goods used - Sales
This relation appears in NCERT product method discussion.
12. Write the three identities of calculating GDP.
GDP can be calculated by product method, expenditure method and income method.
Product method:
GDP = Sum total of GVA of all firms
Expenditure method:
GDP = C + I + G + X - M
Income method:
GDP = W + P + In + R
All three methods measure the same circular flow.
13. Why do all three GDP methods give the same value?
All three methods give the same value because output, expenditure and income represent the same flow. Product method measures final output.
Expenditure method measures spending on that output.
Income method measures factor payments generated by that output.
14. Define budget deficit and trade deficit.
Budget deficit is excess government expenditure over government receipts. Trade deficit is excess imports over exports.
Budget Deficit = Government Expenditure - Government Receipts
Trade Deficit = Imports - Exports
Both terms show gaps in macroeconomic accounts.
15. Calculate trade deficit when excess private investment over saving is ₹2,000 crore and budget deficit is -₹1,500 crore.
The trade deficit is ₹500 crore.
- Given Data:
Excess private investment over saving = ₹2,000 crore
Budget deficit = -₹1,500 crore
- Formula Used:
Trade deficit = Excess private investment over saving + Budget deficit
- Calculation:
Trade deficit = 2,000 + (-1,500)
Trade deficit = 500
- Final Result:
Trade deficit = ₹500 crore
National Income Accounting Class 12 Important Questions on Basic Concepts
Basic terms decide whether a numerical answer starts correctly. Students should revise classification before formulas.
National Income Accounting Class 12 important questions often test final goods, intermediate goods, capital goods and depreciation.
16. What are final goods?
Final goods are goods meant for final use and not for further production. They leave the active economic flow after sale.
A shirt bought by a consumer is a final good.
A machine bought by a firm is also a final good.
17. What are intermediate goods?
Intermediate goods are goods used as inputs for producing other goods. They do not count separately in GDP.
Wheat used by a baker to produce bread is an intermediate good.
Steel sheets used to make cars are intermediate goods.
18. What are consumption goods?
Consumption goods are final goods consumed by ultimate consumers. They include food, clothing and recreation services.
They satisfy wants directly.
They do not support further production.
19. What are capital goods?
Capital goods are durable final goods used in production. Machines, tools and factory buildings are capital goods.
They do not get transformed during one production cycle.
They undergo wear and tear over time.
20. What are consumer durables?
Consumer durables are consumption goods with a long useful life. Television sets, cars and home computers are examples.
They serve consumers over several years.
They need repairs and maintenance.
21. What is depreciation?
Depreciation is the annual allowance for wear and tear of capital goods. It reduces the value of existing capital.
It is also called consumption of fixed capital.
Net Investment = Gross Investment - Depreciation
22. What is gross investment?
Gross investment is total production of capital goods during a year. It includes replacement investment and new capital formation.
Machines, buildings and infrastructure can form gross investment.
It is a flow variable.
23. What is net investment?
Net investment is gross investment after deducting depreciation. It shows new addition to capital stock.
Net Investment = Gross Investment - Depreciation
Positive net investment raises productive capacity.
24. What is inventory in macroeconomics?
Inventory is the stock of unsold finished goods, semi-finished goods or raw materials. A firm carries it from one year to another.
Inventory is a stock variable.
Change in inventory is a flow variable.
25. Why does double counting occur?
Double counting occurs when intermediate goods and final goods are both counted. The value of intermediate goods already enters final goods.
For example, wheat value appears inside bread value.
Counting both exaggerates GDP.
GDP Calculation Methods Class 12 Questions with Answers
GDP methods measure one circular flow from three points. The method changes, but the aggregate value remains the same.
GDP calculation methods Class 12 questions usually test value added, expenditure identity and factor income.
26. What is the product method of calculating GDP?
Product method calculates GDP by adding gross value added of all firms. It avoids double counting.
GDP = Sum total of GVA of all firms
GVA = Value of output - Intermediate consumption
This method measures production.
27. What is value added?
Value added is the net contribution made by a firm during production. It equals output value minus intermediate goods used.
Value Added = Value of output - Value of intermediate goods
It gets distributed as factor incomes.
28. Calculate GVA when output is ₹100 and intermediate goods are ₹20.
The gross value added is ₹80.
- Given Data:
Value of output = ₹100
Intermediate goods = ₹20
- Formula Used:
GVA = Value of output - Intermediate goods
- Calculation:
GVA = 100 - 20
GVA = 80
- Final Result:
GVA = ₹80
29. Calculate NVA when GVA is ₹80 and depreciation is ₹10.
The net value added is ₹70.
- Given Data:
GVA = ₹80
Depreciation = ₹10
- Formula Used:
NVA = GVA - Depreciation
- Calculation:
NVA = 80 - 10
NVA = 70
- Final Result:
NVA = ₹70
30. What is the expenditure method of calculating GDP?
Expenditure method calculates GDP by adding final expenditure on domestic output. It includes consumption, investment, government spending and net exports.
GDP = C + I + G + X - M
NCERT states investment expenditure is the most unstable component.
31. What is the income method of calculating GDP?
Income method calculates GDP by adding factor incomes. These incomes are wages, profits, interest and rent.
GDP = W + P + In + R
It measures income generated from production.
32. Solve the farmer-baker example using value added.
The GDP is ₹250.
- Given Data:
Farmer output = ₹100
Baker output = ₹200
Wheat used by baker = ₹50
- Formula Used:
Value Added = Output - Intermediate goods
- Calculation:
Farmer VA = 100 - 0 = 100
Baker VA = 200 - 50 = 150
GDP = 100 + 150 = 250
- Final Result:
GDP = ₹250
33. Solve the cotton-cloth example using three methods.
The GDP is ₹200 by all three methods.
- Product Method:
Firm A VA = 50 - 0 = 50
Firm B VA = 200 - 50 = 150
GDP = 50 + 150 = 200
- Expenditure Method:
Final expenditure on cloth = 200
GDP = 200
- Income Method:
Wages = 20 + 60 = 80
Profits = 30 + 90 = 120
GDP = 80 + 120 = 200
- Final Result:
GDP = ₹200
National Income Formulas Class 12 Questions with Solved Numericals
Formula accuracy matters in this chapter. One wrong adjustment changes the final value.
National income formulas Class 12 questions commonly use NFIA, depreciation, net indirect taxes, corporate tax and transfer payments.
34. What is GDP at market price?
GDP at market price is the market value of all final goods and services produced within domestic territory. It is measured during a year.
GDPmp = C + I + G + X - M
It includes product taxes and subsidies.
35. What is GNP at market price?
GNPmp measures output produced by normal residents of a country at market prices. It includes net factor income from abroad.
GNPmp = GDPmp + NFIA
NFIA means net factor income from abroad.
36. What is NNP at market price?
NNPmp equals GNPmp after deducting depreciation. It shows net national output at market prices.
NNPmp = GNPmp - Depreciation
It removes capital wear and tear.
37. What is National Income?
National Income is NNP at factor cost. It shows income accruing to factors of production.
NI = NNPmp - Net Indirect Taxes
Net Indirect Taxes = Indirect Taxes - Subsidies
38. Calculate depreciation if GDPmp is ₹1,100 crore, NFIA is ₹100 crore, net indirect taxes are ₹150 crore and NI is ₹850 crore.
Depreciation is ₹200 crore.
- Given Data:
GDPmp = ₹1,100 crore
NFIA = ₹100 crore
Net Indirect Taxes = ₹150 crore
NI = ₹850 crore
- Formula Used:
GNPmp = GDPmp + NFIA
NNPmp = NI + Net Indirect Taxes
Depreciation = GNPmp - NNPmp
- Calculation:
GNPmp = 1,100 + 100 = 1,200
NNPmp = 850 + 150 = 1,000
Depreciation = 1,200 - 1,000 = 200
- Final Result:
Depreciation = ₹200 crore
39. Calculate transfer payments when NNPfc is ₹1,900 crore, PDI is ₹1,200 crore, personal taxes are ₹600 crore, retained earnings are ₹200 crore and net interest is zero.
Transfer payments are ₹100 crore.
- Given Data:
NNPfc = NI = ₹1,900 crore
PDI = ₹1,200 crore
Personal taxes = ₹600 crore
Retained earnings = ₹200 crore
Net interest payments = ₹0
- Formula Used:
PDI = PI - Personal taxes
PI = NI - Retained earnings + Transfer payments
- Calculation:
PI = 1,200 + 600 = 1,800
1,800 = 1,900 - 200 + Transfer payments
Transfer payments = 100
- Final Result:
Transfer payments = ₹100 crore
40. Calculate Personal Income and Personal Disposable Income from the given data.
Personal Income is ₹7,500 crore and Personal Disposable Income is ₹7,000 crore.
- Given Data:
NDPfc = ₹8,000 crore
NFIA = ₹200 crore
Undisbursed Profit = ₹1,000 crore
Corporate Tax = ₹500 crore
Interest received by households = ₹1,500 crore
Interest paid by households = ₹1,200 crore
Transfer income = ₹300 crore
Personal tax = ₹500 crore
- Formula Used:
NI = NDPfc + NFIA
PI = NI - Undisbursed Profit - Corporate Tax + Net Interest received by households + Transfer income
PDI = PI - Personal Tax
- Calculation:
NI = 8,000 + 200 = 8,200
Net interest received = 1,500 - 1,200 = 300
PI = 8,200 - 1,000 - 500 + 300 + 300
PI = 7,300
PDI = 7,300 - 500 = 6,800
- Final Result:
Personal Income = ₹7,300 crore
Personal Disposable Income = ₹6,800 crore
41. Complete Raju barber’s contribution to GDP, NNPmp, NNPfc, PI and PDI.
Raju’s GDP is ₹500, NNPmp is ₹450, NNPfc is ₹420, PI is ₹200 and PDI is ₹180.
- Given Data:
Haircut receipts = ₹500
Depreciation = ₹50
Sales tax = ₹30
Take-home income = ₹200
Retained earnings = ₹220
Income tax = ₹20
- Formula Used:
GDP = Value of output
NNPmp = GDP - Depreciation
NNPfc = NNPmp - Indirect tax
PDI = PI - Personal tax
- Calculation:
GDP = 500
NNPmp = 500 - 50 = 450
NNPfc = 450 - 30 = 420
PI = 200
PDI = 200 - 20 = 180
- Final Result:
GDP = ₹500
NNPmp = ₹450
NNPfc = ₹420
PI = ₹200
PDI = ₹180
Nominal GDP and Real GDP Class 12 Questions with GDP Deflator
Price changes can make GDP rise even when output does not rise. Real GDP removes this price effect.
Nominal GDP and real GDP Class 12 questions often include GDP deflator and base-year prices.
42. What is nominal GDP?
Nominal GDP is GDP measured at current market prices. It changes due to output changes and price changes.
If prices rise, nominal GDP can rise without real output growth.
It uses current-year prices.
43. What is real GDP?
Real GDP is GDP measured at constant prices of a base year. It shows change in physical output.
It removes the effect of price changes.
Economists use it for comparison over time.
44. What is GDP deflator?
GDP deflator is the ratio of nominal GDP to real GDP. It measures price level change from the base year.
GDP Deflator = Nominal GDP / Real GDP
In percentage terms:
GDP Deflator = (Nominal GDP / Real GDP) × 100
45. Calculate GNP deflator when nominal GNP is ₹2,500 crore and real GNP is ₹3,000 crore.
The GNP deflator is 83.33 percent, and the price level has fallen.
- Given Data:
Nominal GNP = ₹2,500 crore
Real GNP = ₹3,000 crore
- Formula Used:
GNP Deflator = (Nominal GNP / Real GNP) × 100
- Calculation:
GNP Deflator = (2,500 / 3,000) × 100
GNP Deflator = 83.33%
- Final Result:
GNP Deflator = 83.33%
Price level has not risen. It has fallen compared to the base year.
46. What is Consumer Price Index?
Consumer Price Index measures the price change of a fixed basket bought by a representative consumer. It uses retail prices.
CPI = (Cost of basket in current year / Cost of basket in base year) × 100
It includes imported consumer goods.
47. What is Wholesale Price Index?
Wholesale Price Index measures price changes for goods traded in bulk. It uses wholesale prices.
Raw materials and semi-finished goods often enter WPI.
Some countries call it Producer Price Index.
48. How is GDP deflator different from CPI?
GDP deflator covers all domestically produced final goods, while CPI covers a fixed consumer basket. CPI includes imported goods consumed by households.
GDP deflator excludes imported goods.
CPI weights stay fixed, but GDP deflator weights change with production.
GDP and Welfare Class 12 Macro Economics Questions
GDP gives useful production data, but it cannot show every welfare condition. Students should avoid writing GDP as a perfect welfare index.
GDP and welfare Class 12 answers need three NCERT reasons: distribution, non-monetary exchanges and externalities.
49. Can GDP be treated as a perfect welfare index?
GDP cannot be treated as a perfect welfare index. It measures production value, not full well-being.
A rise in GDP may benefit only a small group.
GDP also misses non-monetary activities and externalities.
50. How does distribution of GDP limit welfare measurement?
Unequal distribution can make GDP rise without raising welfare for most people. Income may concentrate among a few.
Many people may become worse off.
NCERT gives an example where GDP rises but 90 percent people lose income.
51. How do non-monetary exchanges limit GDP as welfare?
Non-monetary exchanges remain outside GDP because no money payment occurs. Domestic work at home often remains unpaid.
Barter exchanges also remain unrecorded.
This can underestimate actual productive activity.
52. How do externalities limit GDP as welfare?
Externalities affect welfare without market payment. Pollution from a refinery can harm people and fishermen.
GDP may count refinery output but ignore river pollution.
This overestimates welfare when negative externalities exist.
53. Give one example of positive externality.
A vaccination drive can create positive externality by reducing disease spread. Others benefit without paying for that benefit.
GDP may not fully capture this welfare gain.
This can underestimate actual welfare.
Class 12 Macro Economics Important Links