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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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Up to 25 questions from this page. Select your focus, then start.
25 questions
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Easy · Level 2View options
110
115
120
125
Easy · Level 2View options
80
100
120
140
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Price level is 10 percent below the base year
Price level is 10 percent above the base year
Output has risen by 110 percent
Real GDP is zero
Easy · Level 2View options
Quantity of output
General price level
Population growth
Unemployment rate
Easy · Level 2View options
100
105
110
120
Easy · Level 2View options
110
115
120
125
Easy · Level 2View options
80
90
100
110
Easy · Level 2View options
13 percent
20 percent
30 percent
130 percent
Easy · Level 2View options
5 percent
15 percent
25 percent
85 percent
Easy · Level 2View options
Increase in real output
Increase in prices only
Increase in taxes only
Fall in money supply
Easy · Level 2View options
Output growth only
Price rise only
Rise in both prices and output
Population growth only
Easy · Level 2View options
Because nominal GDP and real GDP are equal
Because output is 100 units
Because the price is ₹100
Because inflation is 100 percent
Easy · Level 2View options
Current prices are above base-year prices
Current prices are below base-year prices
Output is zero
Real GDP is zero
Easy · Level 2View options
Current prices are above base-year prices
Current prices are below base-year prices
Output is double the base-year output
Nominal GDP is zero
Easy · Level 2View options
It will rise
It will fall
It will remain unchanged
It will be zero
Easy · Level 2View options
110
115
120
125
Easy · Level 2View options
5 percent
10 percent
15 percent
20 percent
Easy · Level 2View options
₹30,000 crore
₹32,500 crore
₹35,000 crore
₹40,000 crore
Easy · Level 2View options
₹18,000 crore
₹20,000 crore
₹22,000 crore
₹24,000 crore
Easy · Level 2View options
Deflation adjustment
Depreciation
Nationalisation
Capital formation
Easy · Level 2View options
100 and 0 percent
105 and 5 percent
110 and 10 percent
120 and 20 percent
Easy · Level 2View options
75
100
125
200
Easy · Level 2View options
10 points
12 points
14 points
16 points
Easy · Level 2View options
Real GDP
Nominal GDP
Population
Depreciation
Easy · Level 2View options
Nominal GDP
Real GDP
National income
Price index
Question 1EasyLevel 2
If nominal GDP is ₹18,000 crore and real GDP is ₹15,000 crore, what will be the deflator?
Correct answer: C
The GDP deflator measures the overall price level by comparing nominal GDP with real GDP: GDP deflator = (Nominal GDP ÷ Real GDP) × 100. Substituting the values gives (18,000 ÷ 15,000) × 100 = 1.2 × 100 = 120. Therefore, option C is correct. A deflator of 120 means that the current price level is 20% higher than the base-year price level; the other values result from incorrect division or multiplication.
If nominal GDP is ₹1,200 crore and real GDP is ₹1,000 crore then what is the GDP deflator?
Correct answer: C
The GDP deflator measures the overall price level of domestically produced final goods relative to the base year. Its formula is (Nominal GDP ÷ Real GDP) × 100. Therefore, (₹1,200 crore ÷ ₹1,000 crore) × 100 = 120. Option C is correct. A value of 120 indicates that the relevant price level is 20% above the base-year level of 100; it is not a measure of output alone.
The GDP deflator compares the current overall price level with the base-year price level, which is represented by 100. A deflator of 110 means prices are 110% of the base-year level, or 10% higher than it. Therefore option B is correct. It does not mean that output increased by 110%, and it gives no basis for saying that real GDP is zero. A value below 100 would indicate a lower price level.
The GDP deflator measures the overall price level of all domestically produced final goods and services relative to a base year. It is calculated as nominal GDP divided by real GDP, multiplied by 100. Thus, it captures price changes in domestic output, whereas real GDP focuses on quantities. Population growth and unemployment are separate economic indicators, and quantity alone is not what the deflator measures. Therefore, option B is correct.
If nominal GDP is ₹6,600 crore and real GDP is ₹6,000 crore, what will be the deflator?
Correct answer: C
The GDP deflator is calculated by the formula: (Nominal GDP ÷ Real GDP) × 100. Substituting the given values gives (₹6,600 crore ÷ ₹6,000 crore) × 100 = 1.1 × 100 = 110. A value of 110 means that the current price level is 10% higher than the base-year level. The other options result from using the wrong ratio or skipping the multiplication by 100. Therefore, option C is correct.
If nominal GDP is ₹8,400 crore and real GDP is ₹7,000 crore, what will be the deflator?
Correct answer: C
Use the GDP-deflator formula: (Nominal GDP ÷ Real GDP) × 100. Here, (₹8,400 crore ÷ ₹7,000 crore) × 100 = 1.2 × 100 = 120. This indicates that the price level of current domestic output is 20% above the base-year level. Values such as 110 or 115 would not follow from the given ratio, while 125 is also mathematically incorrect. Hence, option C is correct.
If nominal GDP is ₹9,000 crore and real GDP is ₹10,000 crore, what will be the deflator?
Correct answer: B
The GDP deflator equals (Nominal GDP ÷ Real GDP) × 100. Applying the formula gives (₹9,000 crore ÷ ₹10,000 crore) × 100 = 0.9 × 100 = 90. A deflator of 90 means the measured price level is 10% below the base-year level. Option 100 would represent equal nominal and real GDP, while 80 and 110 do not match the calculation. Therefore, option B is correct.
If the deflator is 130, how much higher is the price level than the base year?
Correct answer: C
The GDP deflator is set at 100 in the base year. To find how much higher the current price level is, subtract the base value from the deflator: 130 − 100 = 30 percentage points. Thus, the price level is 30% higher than in the base year. It is not 130% higher; 130 is the index value, not the increase. Therefore, option C is correct.
If the deflator is 85, how much lower is the price level than the base year?
Correct answer: B
The GDP deflator equals 100 in the base year. When the deflator is 85, the price-level shortfall is calculated as 100 − 85 = 15 percentage points. Therefore, the current price level is 15% lower than the base-year level. The value 85 is the index number itself, not the amount of decline. Options 5 and 25 do not represent the difference from the base value. Hence, option B is correct.
Real GDP values output at constant prices, so changes caused purely by inflation are removed. Consequently, an increase in real GDP generally indicates that the economy is producing a larger quantity of final goods and services, reflecting economic growth. It does not necessarily mean prices, taxes or money supply changed. Nominal GDP can rise because of prices alone, but real GDP is designed to isolate the output effect. Therefore, option A is correct.
Nominal GDP measures the value of current production at current prices, so it is influenced by both quantities and prices. If either output or prices rise sufficiently, nominal GDP may increase; a rise in both will clearly increase it, assuming positive values. Real GDP removes the price effect, but nominal GDP does not. Population growth alone is not a direct component unless it raises measured output. Therefore, option C is the best answer.
The GDP deflator is calculated as: (Nominal GDP ÷ Real GDP) × 100. In the base year, nominal GDP and real GDP use the same prices and therefore have the same value. Their ratio is 1, and multiplying 1 by 100 gives a deflator of 100. This number does not mean that output is 100 units, that every price is ₹100, or that inflation is 100 percent.
The GDP deflator compares the current price level with the base-year price level using the formula (Nominal GDP ÷ Real GDP) × 100. A value above 100 means that, on average, current prices are higher than base-year prices. It generally indicates inflation relative to the base year. It does not imply zero output or zero real GDP, and the opposite price relationship would produce a value below 100.
The GDP deflator equals (Nominal GDP ÷ Real GDP) × 100 and compares the current price level with the base-year level. If it is below 100, nominal GDP is lower relative to real GDP because current prices are, on average, below base-year prices. This indicates a lower price level, possibly deflation relative to the base year. It does not show that output or nominal GDP is zero.
If real GDP remains constant and the GDP deflator rises, what happens to nominal GDP?
Correct answer: A
The GDP deflator represents the price level relative to the base year, and the relationship is Nominal GDP = Real GDP × Deflator ÷ 100. If real GDP stays constant while the deflator rises, the price component becomes larger, so nominal GDP increases. Therefore, option A is correct; a fall or unchanged nominal value would contradict the given relationship.
If nominal GDP is ₹14,400 crore and real GDP is ₹12,000 crore what will be the price index?
Correct answer: C
The governing formula for the GDP price index or GDP deflator is (nominal GDP ÷ real GDP) × 100. Substituting the values gives (₹14,400 crore ÷ ₹12,000 crore) × 100 = 1.2 × 100 = 120. Hence option C is correct. Values such as 110, 115, or 125 do not result from the stated ratio and therefore are distractors.
If real GDP is ₹18,000 crore and nominal GDP is ₹16,200 crore how much has the price level fallen?
Correct answer: B
Use the GDP deflator to compare the current price level with the base-year level: (nominal GDP ÷ real GDP) × 100 = (16,200 ÷ 18,000) × 100 = 90. A price index of 90 means prices are 10% below the base-year level because 100 − 90 = 10. Therefore B is correct; the other percentages do not follow from the index.
If the deflator is 140 and real GDP is ₹25,000 crore what will be nominal GDP?
Correct answer: C
The GDP deflator formula is deflator = (nominal GDP ÷ real GDP) × 100. Rearranging gives nominal GDP = real GDP × deflator ÷ 100. Thus nominal GDP = ₹25,000 crore × 140 ÷ 100 = ₹35,000 crore. Option C is correct. A, B, and D come from using an incorrect multiplier or failing to apply the index base of 100.
If nominal GDP is ₹27,000 crore and the deflator is 135 what will be real GDP?
Correct answer: B
Starting with deflator = (nominal GDP ÷ real GDP) × 100, rearrange to real GDP = nominal GDP × 100 ÷ deflator. Therefore real GDP = ₹27,000 crore × 100 ÷ 135 = ₹20,000 crore. Option B is correct because dividing nominal output by the price index removes the price effect. The other values use an incorrect divisor or ratio.
What is the process of converting nominal GDP into real GDP called?
Correct answer: A
Nominal GDP is measured at current prices, so it includes both changes in output and changes in prices. Converting it into real GDP requires removing the price-level effect with an appropriate deflator; this is called deflation adjustment. Thus option A is correct. Depreciation concerns loss of capital value, nationalisation concerns ownership, and capital formation concerns investment in assets.
If nominal GDP is ₹22,000 crore and real GDP is ₹20,000 crore, what will be the deflator and price rise respectively?
Correct answer: C
The GDP deflator is calculated as (Nominal GDP ÷ Real GDP) × 100. Substituting the values gives (₹22,000 ÷ ₹20,000) × 100 = 110. Since the base-year index is 100, a deflator of 110 means the overall price level is 10% higher than in the base year. Therefore option C is correct; the other pairs use incorrect ratios or interpretations.
If both nominal and real GDP are ₹2,000 crore, what will the GDP deflator be?
Correct answer: B
The GDP deflator is calculated as (Nominal GDP ÷ Real GDP) × 100. Since both values are ₹2,000 crore, the ratio is 2,000 ÷ 2,000 = 1. Multiplying by 100 gives a deflator of 100, so option B is correct. A deflator of 100 means the measured price level equals the base-year price level. Values above or below 100 would indicate higher or lower prices, respectively.
If the GDP deflator falls from 140 to 126, by how many index points does it decline?
Correct answer: C
An index-point change is found by subtracting the new index from the old index: 140 − 126 = 14 points. Therefore, option C is correct. This question asks for the absolute decline in index points, not the percentage decline. The percentage fall would be (14 ÷ 140) × 100 = 10%, which is different from the requested 14 points.
What appears in the numerator of the GDP deflator formula?
Correct answer: B
The GDP deflator is calculated as (nominal GDP ÷ real GDP) × 100. Therefore nominal GDP appears in the numerator, making option B correct. Nominal GDP uses current prices, while real GDP at constant prices appears in the denominator. Population and depreciation are not components of this price-index formula, so they cannot be the numerator.
What appears in the denominator of the GDP deflator formula?
Correct answer: B
The GDP deflator formula is (nominal GDP ÷ real GDP) × 100. Hence real GDP is placed in the denominator, and option B is correct. Nominal GDP is the numerator because it reflects current prices, whereas real GDP uses constant base-year prices. National income and a separate price index are not the denominator in this standard formula.
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