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In Class 12 Economics, under National Income and Related Aggregates, students learn how the GDP Deflator measures the overall change in prices of goods and services produced within an economy. The topic explains its relationship with nominal GDP and real GDP, the role of a base year, and the formula: GDP Deflator = (Nominal GDP ÷ Real GDP) × 100. Students also interpret changes in the index to understand inflation and distinguish price effects from changes in production.
TOPIC PRACTICE
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25 questions
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Easy · Level 7View options
8 percent
10 percent
16 percent
20 percent
Easy · Level 7View options
Deflation
Inflation
Decline in population
Zero production
Easy · Level 7View options
Inflation
Deflation
Rapid population growth
Increase in exports
Easy · Level 7View options
It will rise
It will fall
It will remain unchanged
It will become zero
Easy · Level 7View options
It will rise
It will fall
It will remain 100
It will become zero
Easy · Level 7View options
It will rise
It will fall
It will double
It will remain unchanged
Easy · Level 7View options
It rises by 10 percent
It falls by 10 percent
It remains unchanged
It rises by 20 percent
Easy · Level 7View options
It will rise
It will fall
It will remain unchanged
It will become 100
Easy · Level 7View options
It will rise
It will fall
It will remain unchanged
It will double
Easy · Level 7View options
Price change of domestic final goods and services
Price change of raw materials only
Price change of imports only
Price change of gold only
Easy · Level 7View options
Current domestic production
Only a fixed food basket
Only imported consumer goods
Only wages
Easy · Level 7View options
Because a car is not a final good
Because imports are not domestic production
Because the price of a car is not measured
Because all cars are second-hand
Easy · Level 7View options
GDP deflator
Only the population index
Only the unemployment rate
Only the exchange rate
Easy · Level 7View options
10 percent
20 percent
25 percent
200 percent
Easy · Level 7View options
₹900 crore
₹950 crore
₹1000 crore
₹1050 crore
Easy · Level 7View options
₹800 crore
₹850 crore
₹900 crore
₹950 crore
Easy · Level 7View options
5 percent
10 percent
11 percent
21 percent
Easy · Level 7View options
20 percent
25 percent
30 percent
100 percent
Easy · Level 7View options
When nominal GDP equals real GDP
When nominal GDP doubles
When real GDP is zero
When imports equal exports
Easy · Level 7View options
Real output has certainly risen
Real output has certainly fallen
It indicates a rise in the price level only
Real output has become zero
Easy · Level 7View options
The average domestic price level has fallen
Real output has certainly doubled
Population has certainly fallen
Imports have certainly risen
Easy · Level 7View options
New-year deflator
Previous-year deflator
Base-year population
Nominal GDP
Easy · Level 7View options
Percentage change in the price level
Only total population
Only the number of unemployed people
Only government debt
Easy · Level 7View options
110
115
120
125
Easy · Level 7View options
₹1200 crore
₹1240 crore
₹1260 crore
₹1300 crore
Question 1EasyLevel 7
By what percentage did the price level fall when the GDP deflator declined from 160 to 144?
Correct answer: B
The governing concept is percentage change in a price index. The fall in the deflator is 160 − 144 = 16 points. To express this fall as a percentage, divide by the initial value: (16 ÷ 160) × 100 = 10%. Therefore, option B is correct. The 16-point difference is not a 16% fall, because percentage change must use the original index as the denominator.
If the GDP deflator is continuously rising, what does it generally indicate?
Correct answer: B
The GDP deflator measures the average price level of domestically produced final goods and services relative to the base year. If it rises continuously, the average price level is increasing over time, which generally indicates inflation. Therefore, option B is correct. Deflation would normally be associated with a falling deflator, while population decline or zero production is not implied by this price index.
If the deflator is continuously falling, what does it generally indicate?
Correct answer: B
The GDP deflator measures the average price level of domestically produced final goods and services, using the relation Nominal GDP divided by Real GDP, multiplied by 100. If it continuously falls, prices are generally declining relative to the base year, indicating deflation. Inflation would normally make the deflator rise, while population growth and exports do not define this movement.
If prices remain unchanged and output rises, what will the deflator generally do?
Correct answer: C
The GDP deflator is calculated as Nominal GDP divided by Real GDP, multiplied by 100. When prices remain unchanged, nominal GDP and real GDP increase because of the same rise in physical output and therefore move proportionately. Their ratio remains constant, so the deflator remains unchanged. It does not become zero, and a change in output alone does not imply inflation or deflation.
If output remains unchanged and prices rise, what happens to the deflator?
Correct answer: A
The GDP deflator captures changes in the price level by comparing nominal GDP with real GDP. If physical output remains unchanged but prices rise, nominal GDP increases while real GDP, measured at base-year prices, stays constant. Consequently, the ratio Nominal GDP divided by Real GDP rises, so the deflator increases. Option C would apply only under a particular base-year price situation, not generally.
If output remains unchanged and prices fall, what happens to the deflator?
Correct answer: B
The GDP deflator is an index of the prices of domestically produced final output. With output unchanged, real GDP remains constant because it is valued at base-year prices. A fall in current prices lowers nominal GDP, so the ratio Nominal GDP divided by Real GDP declines. Therefore the deflator falls. It would not remain unchanged because the price level has changed.
If nominal and real GDP both rise by 10 percent, what happens to the deflator?
Correct answer: C
The GDP deflator equals (Nominal GDP divided by Real GDP) multiplied by 100. Suppose the initial values are N and R; the new values are 1.10N and 1.10R. The new ratio is 1.10N divided by 1.10R, which equals N divided by R. Since both measures rise at the same rate, the deflator remains unchanged rather than rising by 10 or 20 percent.
If nominal GDP rises while real GDP remains the same, what will the deflator do?
Correct answer: A
The GDP deflator is calculated as (Nominal GDP divided by Real GDP) multiplied by 100. If real GDP remains constant and nominal GDP increases, the numerator of this ratio becomes larger while the denominator is unchanged. Therefore the deflator rises, indicating a higher average price level for domestic final output. It need not become exactly 100; that value depends on the base-year relationship.
If nominal GDP falls while real GDP remains the same, what will the deflator do?
Correct answer: B
The GDP deflator is obtained by dividing nominal GDP by real GDP and multiplying by 100. When real GDP remains unchanged, a fall in nominal GDP reduces this ratio directly. Thus the deflator falls, showing a decline in the average prices of domestically produced final goods and services relative to the base year. It cannot remain unchanged or double when only the numerator decreases.
Which price change is reflected by the GDP deflator?
Correct answer: A
The GDP deflator measures the price change of all domestically produced final goods and services included in GDP. It is broad and uses the current composition of domestic production, rather than focusing only on a raw material, gold, or imports. Imported goods are excluded from domestic GDP, while intermediate goods are excluded to avoid double counting. Therefore option A is correct.
Compared with the consumer price index what is the GDP deflator based on?
Correct answer: A
Unlike the CPI, which usually tracks a specified consumer basket, the GDP deflator is based on the prices of final goods and services currently produced within the domestic economy. Its weights change as the composition of domestic output changes. It excludes imports because they are not domestic production. Therefore current domestic production, option A, is the correct basis.
Why does a rise in the price of an imported car not directly affect the GDP deflator?
Correct answer: B
The GDP deflator covers the prices of final goods and services produced within the domestic economy. An imported car may be a final consumer good, but it is not produced domestically, so its price is not part of domestic GDP and does not directly enter the GDP deflator. This differs from the CPI, which may include imported consumer goods in its basket.
If the price of a newly produced domestic bus rises, which index can it directly affect?
Correct answer: A
The GDP deflator measures the overall price level of domestically produced final goods and services relative to the base year. A newly produced domestic bus is included in domestic output, so a rise in its price can raise the deflator, provided other factors remain unchanged. Population, unemployment and exchange-rate measures are not directly determined by the bus price alone.
If nominal GDP is ₹1200 crore and real GDP is ₹1000 crore, how much higher is the price level than in the base year?
Correct answer: B
The GDP deflator is calculated as (Nominal GDP ÷ Real GDP) × 100. Thus, it is (₹1200 crore ÷ ₹1000 crore) × 100 = 120. Since 100 represents the base-year price level, an index of 120 means prices are 20 percent higher than in the base year. Therefore, option B is correct; 25 percent incorrectly uses the wrong base.
If real GDP is ₹1000 crore and the GDP deflator is 95, what is nominal GDP?
Correct answer: B
The relationship is GDP deflator = (Nominal GDP ÷ Real GDP) × 100. Rearranging gives Nominal GDP = (Deflator × Real GDP) ÷ 100. Therefore, nominal GDP = (95 × ₹1000 crore) ÷ 100 = ₹950 crore. The deflator below 100 also indicates that the measured price level is below the base-year level, so option B is consistent.
If nominal GDP is ₹990 crore and the GDP deflator is 110, what is real GDP?
Correct answer: C
Use the formula GDP deflator = (Nominal GDP ÷ Real GDP) × 100. Solving for real GDP gives Real GDP = (Nominal GDP × 100) ÷ Deflator. Substitution gives (₹990 crore × 100) ÷ 110 = ₹900 crore. Therefore, option C is correct. The other values result from using an incorrect divisor or making an arithmetic error.
If the GDP deflator rises from 110 to 121, what is the inflation rate?
Correct answer: B
Inflation is the percentage change in the price index, calculated using the initial value as the denominator. Here, inflation = [(121 − 110) ÷ 110] × 100 = (11 ÷ 110) × 100 = 10 percent. Thus, option B is correct. The increase of 11 index points is not itself an 11 percent inflation rate, while 21 percent ignores the proper percentage-change formula.
If the GDP deflator falls from 125 to 100, by what percentage did the price level fall?
Correct answer: A
The percentage fall is measured relative to the original value, not the final value. Therefore, fall = [(125 − 100) ÷ 125] × 100 = (25 ÷ 125) × 100 = 20 percent. Option A is correct. Dividing by 100 would incorrectly produce 25 percent, and the change is neither 30 percent nor a complete 100 percent fall.
Under which condition will the GDP deflator be exactly 100?
Correct answer: A
The GDP deflator equals (Nominal GDP ÷ Real GDP) × 100. If nominal GDP and real GDP are equal, their ratio is 1, so the deflator equals 1 × 100 = 100. This means the current price level is the same as the base-year price level. The other conditions do not establish equality between nominal and real GDP, so they cannot guarantee a deflator of 100.
What can be said with certainty about real output when the GDP deflator rises?
Correct answer: C
The GDP deflator is a price index for domestically produced final output. A rise in it indicates that the relevant average price level has increased, but it does not by itself reveal whether the quantity of real output rose, fell or remained unchanged. That requires separate real-GDP information. Therefore, option C is the only conclusion that follows with certainty; the other options make unsupported claims about output.
Which conclusion is most appropriate when the GDP deflator falls?
Correct answer: A
A GDP deflator measures the average price level of final goods and services produced domestically. Therefore, a fall in the deflator most appropriately indicates a fall in that average domestic price level, often described as deflation in the measured output basket. It does not prove that real output doubled, population declined or imports increased, because none of those variables is determined by the deflator alone.
Which year's GDP deflator is placed in the denominator when calculating inflation?
Correct answer: B
Inflation is the percentage change in the price index from one period to the next. The standard formula is [(current-year deflator − previous-year deflator) ÷ previous-year deflator] × 100. The previous-year value is the initial reference level, so it belongs in the denominator. Using the new-year deflator would measure the change against the wrong base, while population and nominal GDP are not the required denominator.
What can be calculated from GDP deflators of two consecutive years?
Correct answer: A
The GDP deflator is a broad price index for domestically produced final goods and services. Comparing consecutive values measures the percentage change in the overall price level: [(current deflator − previous deflator) ÷ previous deflator] × 100. A rise indicates inflation and a fall indicates deflation. Population, unemployment, and government debt cannot be calculated from deflator values alone, so option A is correct.
If nominal GDP is ₹1260 crore and real GDP is ₹1050 crore, what will the GDP deflator be?
Correct answer: C
The GDP deflator converts nominal GDP into an index relative to the base-year price level. Use: GDP deflator = (Nominal GDP ÷ Real GDP) × 100. Substituting the given values gives (₹1,260 crore ÷ ₹1,050 crore) × 100 = 1.2 × 100 = 120. Therefore, option C is correct. The other values result from using an incorrect ratio or calculation.
If real GDP is ₹1200 crore and the GDP deflator is 105, what will nominal GDP be?
Correct answer: C
The relationship among the aggregates is: GDP deflator = (Nominal GDP ÷ Real GDP) × 100. Rearranging gives Nominal GDP = Real GDP × GDP deflator ÷ 100. Thus, nominal GDP = ₹1,200 crore × 105 ÷ 100 = ₹1,260 crore. The deflator of 105 means the relevant price level is 5% above the base-year level, so option C is correct.
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