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Foreign Exchange Rate for CUET Economics

About 5 min to learn · 50 questions

What the exchange rate is, why people demand and supply foreign exchange, how a flexible rate is set by the market and moves with depreciation and appreciation, fixed rates with devaluation and revaluation, and managed floating as India practises it, with graphs, worked examples and the traps CUET sets.

Syllabus area
Introductory Macroeconomics
On this page · 9 sections
  1. 01The core idea
  2. 02Demand for and supply of foreign exchange
  3. 03The flexible exchange rate
  4. 04The fixed exchange rate
  5. 05Managed floating
  6. 06Exam shortcuts
  7. 07Common mistakes
  8. 08Quick revision
  9. 09Check your understanding

The core idea

The exchange rate is the price of one currency in terms of another, written here as rupees per dollar. When it rises (₹80 → ₹85 per $), each dollar costs more rupees: the rupee has depreciated. When it falls, the rupee has appreciated.

Demand for and supply of foreign exchange

Demand for dollars (payments abroad)Supply of dollars (receipts from abroad)
Imports of goods and servicesExports of goods and services
Indians travelling or studying abroadForeign tourists in India
Indians investing abroadForeign investment in India
Repaying foreign loans, sending gifts abroadRemittances to India, borrowing from abroad
Speculators expecting the dollar to rise

The demand curve slopes down: a cheaper dollar makes imports cheaper, so more dollars are wanted. The supply curve slopes up: a dearer dollar makes Indian goods cheaper for foreigners, so exports and dollar earnings rise.

The flexible exchange rate

Under a flexible (floating) rate, the market sets the rate where the dollars demanded equal the dollars supplied.

The demand for dollars shifts right from D₁ to D₂ while supply S stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹90 per dollar, $50 billion).
A rise in the demand for dollars, such as a costlier oil import bill, depreciates the rupee from ₹80 to ₹90.
The supply of dollars shifts right from S₁ to S₂ while demand D stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹70 per dollar, $50 billion).
A rise in the supply of dollars, such as a surge of foreign investment, appreciates the rupee from ₹80 to ₹70.

Depreciation makes exports cheaper abroad and imports dearer at home, which helps close a BoP deficit on its own. A floating rate needs no reserves to defend a level, but it can swing and make trade uncertain.

Example 1 · Who gains from depreciation

An exporter sells software worth 10 lakh dollars. Before payment, the rupee moves from ₹80 to ₹84 per dollar.

  1. At ₹80: 10 lakh × 80 = ₹8 crore. At ₹84: 10 lakh × 84 = ₹8.4 crore.

  2. The dollar's price rose by 4 ÷ 80 = 5%.

Answer

The exporter earns ₹40 lakh more

The fixed exchange rate

Under a fixed rate, the government or central bank sets the rate and holds it by buying or selling foreign currency. Lowering the fixed value is devaluation; raising it is revaluation. Under the gold standard each currency had a gold value; under Bretton Woods (1944–1971) currencies were pegged to the dollar, which was convertible into gold.

Demand (D$) and supply (S$) of dollars cross at ₹80 per dollar, but the rate is fixed at ₹70 per dollar. At ₹70, $30 billion is supplied (A) and $50 billion is demanded (B).
At the fixed ₹70, the central bank must sell $20 billion from reserves to meet the shortage AB.

A fixed rate gives traders certainty but needs large reserves; if they run out, the country must devalue towards the market rate.

Floating rateFixed rate
Depreciation, appreciationDevaluation, revaluation
Set by the marketSet by the authority

Managed floating

The market sets the rate, but the central bank buys or sells dollars to stop sharp swings: sell dollars to support a falling rupee, buy them when inflows push the rupee up too fast. India moved to a market-determined rate in March 1993 and follows managed floating, with the RBI intervening to curb excessive volatility.

Exam shortcuts

  • Higher ₹ per $ = rupee depreciation.
  • Payments abroad = demand for forex; receipts = supply.
  • Market moves: depreciation/appreciation. Government moves: devaluation/revaluation.
  • Rupee falling too fast: the RBI sells dollars.

Common mistakes

  • Reading a higher number as a stronger rupee.
  • Calling foreign investment into India a demand for dollars.
  • Using "devaluation" for a market fall.
  • Thinking managed floating needs no reserves.

Quick revision

The market

  • Demand for $: imports, travel, investment abroad
  • Supply of $: exports, tourists, investment into India
  • Equilibrium where they meet

Systems

  • Flexible: market sets it
  • Fixed: authority sets it; devalue or revalue
  • Managed floating: market with intervention (India since 1993)

All of Macroeconomics on one page is in the Macro formulas and graphs sheet.

Next · 08Quick revision

Check your understanding

50 questions, grouped by type, easy to hard. Pick an answer and check it. The worked solution opens when you ask for it.

The exchange rateQ1 of 50Q1

The exchange rate

10 questions

The foreign exchange rate is

Options for question 1

Show the explanationHide the explanation

AnswerB · the price of one currency in terms of another

  1. ₹84 per dollar means one dollar costs ₹84.

The rupee-dollar rate moves from ₹80 to ₹85 per dollar. The rupee has

Options for question 2

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AnswerD · depreciated

  1. More rupees are now needed to buy one dollar, so each rupee is worth less in dollars.

Worth noting

The number went up, but a higher ₹ per $ means a weaker rupee.

Read the two statements and choose the correct option.

I. A rise in the rupee price of a dollar means the rupee has appreciated.

II. When the rupee depreciates, foreign holidays become costlier for Indians.

Options for question 3

Show the explanationHide the explanation

AnswerB · Only II

  1. More rupees per dollar is a depreciation of the rupee. I is false.

  2. Each dollar spent abroad now costs more rupees. II is true.

If $1 = ₹80, then ₹1 is worth

Options for question 4

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AnswerA · $0.0125

  1. ₹1 = $1 ÷ 80 = $0.0125.

A laptop costs $500 in the USA. If $1 = ₹84, its price in rupees (ignoring taxes and transport) is

Options for question 5

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AnswerC · ₹42,000

  1. Price in rupees = 500 × 84 = ₹42,000.

Assertion (A): A depreciation of the rupee makes Indian goods cheaper for foreign buyers.

Reason (R): After depreciation, each dollar buys more rupees' worth of Indian goods.

Options for question 6

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AnswerA · Both A and R are true, and R is the correct explanation of A.

  1. A ₹840 shirt costs $10.5 at ₹80 per dollar but $10 at ₹84 per dollar. R explains A.

Read the two statements and choose the correct option.

I. A fall in the rupee price of a dollar is an appreciation of the rupee.

II. An appreciation of the rupee makes imports more expensive in rupees.

Options for question 7

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AnswerA · Only I

  1. Fewer rupees per dollar means a stronger rupee. I is true.

  2. With a stronger rupee, a dollar-priced import costs fewer rupees, so imports become cheaper. II is false.

If £1 = ₹105 and $1 = ₹84, then £1 is worth about

Options for question 8

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AnswerB · $1.25

  1. £1 buys ₹105, and ₹105 buys 105 ÷ 84 dollars.

  2. 105 ÷ 84 = 1.25, so £1 ≈ $1.25.

Assertion (A): An appreciation of the rupee helps Indian exporters.

Reason (R): After an appreciation, each dollar earned from exports converts into fewer rupees.

Options for question 9

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AnswerD · A is false, but R is true.

  1. R is true: fewer rupees per dollar is what appreciation means.

  2. So exporters earn fewer rupees and their goods cost more abroad: appreciation hurts them. A is false.

The exchange rate moves from ₹80 to ₹84 per dollar. By what percentage has the dollar appreciated against the rupee?

Options for question 10

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AnswerC · 5%

  1. The dollar's price in rupees rose by 4 on a base of 80.

  2. 4 ÷ 80 × 100 = 5%.

Worth noting

4.76% is how much the rupee fell in dollar terms (1/80 to 1/84), a different measure.

Demand for and supply of foreign exchange

10 questions

Which of these creates a demand for foreign exchange in India?

Options for question 11

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AnswerA · Indians importing goods from abroad

  1. Importers must pay in foreign currency, so they buy it with rupees.

  2. The other three bring foreign currency in: they add to supply.

Match each transaction with its effect in India's forex market.

List IList II
A. An Indian student pays fees to a university in CanadaI. Supply of foreign exchange (investment inflow)
B. An Indian IT firm is paid by a US clientII. Demand for foreign exchange (services import)
C. A Japanese company builds a factory in GujaratIII. Demand for foreign exchange (loan repayment)
D. An Indian firm repays a loan taken from a German bankIV. Supply of foreign exchange (services export)
Options for question 12

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AnswerC · A-II, B-IV, C-I, D-III

  1. Payments abroad create demand for foreign currency; receipts from abroad create supply.

The demand curve for dollars in India slopes downward because, as the rupee price of a dollar falls,

Options for question 13

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AnswerB · foreign goods become cheaper in rupees, so imports rise

  1. A cheaper dollar makes imports, foreign travel and study abroad cheaper, so more dollars are demanded.

The supply curve of dollars in India slopes upward because, as the rupee price of a dollar rises,

Options for question 14

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AnswerC · exports become cheaper for foreigners and rise

  1. Each dollar now buys more Indian goods, so foreigners buy more from India and bring in more dollars.

The graph shows the demand for and supply of dollars. What is the equilibrium exchange rate?

A downward-sloping demand curve for dollars (D$) and an upward-sloping supply curve of dollars (S$). They cross at E, where the exchange rate is ₹80 per dollar and $40 billion is traded.
Options for question 15

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AnswerC · ₹80 per dollar

  1. Equilibrium is where D$ meets S$, at E.

  2. E is at ₹80 per dollar, with $40 billion traded.

Worth noting

40 is the quantity of dollars traded, in billions, not the rate.

Read the two statements and choose the correct option.

I. Foreign tourists spending in India add to the supply of foreign exchange.

II. Indians buying shares of foreign companies add to the supply of foreign exchange.

Options for question 16

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AnswerA · Only I

  1. Tourists exchange their currency for rupees. I is true.

  2. Buying foreign shares needs foreign currency: that is demand, not supply. II is false.

Assertion (A): Speculators who expect the dollar to rise buy dollars now.

Reason (R): They hope to sell the dollars later for more rupees.

Options for question 17

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AnswerA · Both A and R are true, and R is the correct explanation of A.

  1. Speculative demand rises when a currency is expected to gain. R explains A.

The graph shows the demand for and supply of dollars. At ₹90 per dollar, the market has

A downward-sloping demand curve for dollars (D$) and an upward-sloping supply curve of dollars (S$). They cross at E, where the exchange rate is ₹80 per dollar and $40 billion is traded.
Options for question 18

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AnswerC · an excess supply of dollars, so the rate falls

  1. Above the equilibrium rate of ₹80, S$ lies to the right of D$: more dollars are offered than wanted.

  2. Sellers cut the price of dollars until the rate returns to ₹80.

Read the two statements and choose the correct option.

I. Indian students going to study abroad add to the supply of foreign exchange in India.

II. Exports of Indian pharmaceuticals add to the supply of foreign exchange in India.

Options for question 19

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AnswerB · Only II

  1. Fees paid abroad need foreign currency: demand, not supply. I is false.

  2. Export earnings bring foreign currency in. II is true.

Which of these would shift the supply curve of dollars in India to the left?

Options for question 20

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AnswerB · Foreign investors pulling money out of Indian shares

  1. Fewer dollars come in at every exchange rate, so supply falls.

The flexible rate: depreciation and appreciation

10 questions

Under a flexible (floating) exchange rate system, the exchange rate is set by

Options for question 21

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AnswerA · demand and supply in the forex market

  1. The rate moves freely to the level where the quantity demanded equals the quantity supplied.

The graph shows the demand for dollars rising from D₁ to D₂. What happens to the rupee?

The demand for dollars shifts right from D₁ to D₂ while supply S stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹90 per dollar, $50 billion).
Options for question 22

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AnswerD · It depreciates from ₹80 to ₹90 per dollar

  1. Equilibrium moves from E₁ (₹80) to E₂ (₹90).

  2. More rupees per dollar means the rupee has depreciated.

Worth noting

40 and 50 are quantities of dollars, in billions, read off the horizontal axis, not exchange rates.

The graph shows the demand for dollars rising from D₁ to D₂. Which event could cause this shift?

The demand for dollars shifts right from D₁ to D₂ while supply S stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹90 per dollar, $50 billion).
Options for question 23

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AnswerC · A rise in the world price of crude oil, which India imports

  1. A costlier oil bill means importers need more dollars at every exchange rate: demand shifts right.

  2. The other three add to the supply of dollars.

The graph shows the supply of dollars rising from S₁ to S₂. What happens to the rupee?

The supply of dollars shifts right from S₁ to S₂ while demand D stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹70 per dollar, $50 billion).
Options for question 24

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AnswerA · It appreciates from ₹80 to ₹70 per dollar

  1. Equilibrium moves from E₁ (₹80) to E₂ (₹70).

  2. Fewer rupees per dollar: the rupee has appreciated.

Worth noting

Devaluation is a decision under a fixed rate; here the market moved the rate.

The graph shows the supply of dollars rising from S₁ to S₂. Which event could cause this?

The supply of dollars shifts right from S₁ to S₂ while demand D stays put. Equilibrium moves from E₁ (₹80 per dollar, $40 billion) to E₂ (₹70 per dollar, $50 billion).
Options for question 25

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AnswerB · A surge in foreign portfolio investment into Indian shares

  1. Foreign investors bring in dollars to buy rupee assets, adding to supply at every rate.

  2. The other three raise the demand for dollars.

Read the two statements and choose the correct option.

I. Under a flexible rate, the central bank does not need to hold large foreign exchange reserves to defend a rate.

II. A flexible rate gives traders certainty about future exchange rates.

Options for question 26

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AnswerA · Only I

  1. The market clears itself, so reserves are not needed to hold any level. I is true.

  2. A floating rate can swing, which creates uncertainty for traders. II is false.

An Indian exporter sells software worth 10 lakh dollars. If the rupee depreciates from ₹80 to ₹84 per dollar before payment, the exporter's rupee earnings

Options for question 27

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AnswerD · rise by ₹40 lakh

  1. At ₹80: 10 lakh × 80 = ₹8 crore. At ₹84: 10 lakh × 84 = ₹8.4 crore.

  2. Rise = ₹40 lakh: depreciation helps exporters.

Assertion (A): A depreciation of the rupee makes imports cheaper for Indians.

Reason (R): After depreciation, more rupees are needed to buy each dollar.

Options for question 28

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AnswerD · A is false, but R is true.

  1. R is true: that is what depreciation means.

  2. So dollar-priced imports cost more rupees, not fewer. A is false.

The graph shows the demand for and supply of dollars. If India's exports fall sharply, the rupee is likely to

A downward-sloping demand curve for dollars (D$) and an upward-sloping supply curve of dollars (S$). They cross at E, where the exchange rate is ₹80 per dollar and $40 billion is traded.
Options for question 29

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AnswerD · depreciate, as the supply of dollars shifts left

  1. Fewer exports mean fewer dollars coming in at every rate: S$ shifts left.

  2. With demand unchanged, the rupee price of a dollar rises above ₹80: the rupee depreciates.

Assertion (A): Under a flexible exchange rate, a BoP deficit tends to correct itself.

Reason (R): Excess demand for foreign currency makes the home currency depreciate, which raises exports and cuts imports.

Options for question 30

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AnswerA · Both A and R are true, and R is the correct explanation of A.

  1. Depreciation makes exports cheaper abroad and imports dearer at home, closing the gap. R explains A.

The fixed rate: devaluation and revaluation

11 questions

Under a fixed exchange rate system, the exchange rate is

Options for question 31

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AnswerA · set by the government or central bank and kept there

  1. The authority announces a rate and buys or sells foreign currency to hold it.

Match each term with its meaning.

List IList II
A. DepreciationI. Market-driven rise in a currency's value
B. AppreciationII. Government raises the fixed value of its currency
C. DevaluationIII. Market-driven fall in a currency's value
D. RevaluationIV. Government lowers the fixed value of its currency
Options for question 32

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AnswerD · A-III, B-I, C-IV, D-II

  1. Depreciation and appreciation happen under floating rates; devaluation and revaluation are decisions under a fixed rate.

The graph shows the rate fixed at ₹70 per dollar, below the market rate. How many dollars must the central bank sell from its reserves to hold the rate?

Demand (D$) and supply (S$) of dollars cross at ₹80 per dollar, but the rate is fixed at ₹70 per dollar. At ₹70, $30 billion is supplied (A) and $50 billion is demanded (B).
Options for question 33

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AnswerB · $20 billion

  1. At ₹70, $50 billion is demanded (B) but only $30 billion is supplied (A).

  2. The shortage of 50 − 30 = $20 billion must be met from reserves.

Worth noting

$10 billion confuses the gap in rupees per dollar (80 − 70) with the gap in dollars.

The graph shows the rate fixed at ₹70 per dollar, below the market rate. If the central bank runs short of reserves, it is likely to

Demand (D$) and supply (S$) of dollars cross at ₹80 per dollar, but the rate is fixed at ₹70 per dollar. At ₹70, $30 billion is supplied (A) and $50 billion is demanded (B).
Options for question 34

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AnswerB · devalue the rupee towards ₹80 per dollar

  1. The rupee is overvalued at ₹70, so there is a lasting shortage of dollars.

  2. Devaluing towards the market rate of ₹80 removes the shortage.

Assertion (A): A fixed exchange rate reduces uncertainty for exporters and importers.

Reason (R): Traders know in advance how many rupees a dollar will cost.

Options for question 35

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AnswerA · Both A and R are true, and R is the correct explanation of A.

  1. Stable rates make planning and pricing easier. R explains A.

Read the two statements and choose the correct option.

I. A fixed rate needs the central bank to hold large foreign exchange reserves.

II. Under a fixed rate, the currency's value never changes.

Options for question 36

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AnswerA · Only I

  1. Reserves are needed to buy or sell currency at the fixed rate. I is true.

  2. The authority can devalue or revalue. II is false.

Under the Bretton Woods system (1944–1971), most currencies were

Options for question 37

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AnswerC · pegged to the US dollar, which was convertible into gold

  1. It was a system of fixed but adjustable rates against the dollar; it ended in 1971.

Read the two statements and choose the correct option.

I. Revaluation makes a country's exports cheaper abroad.

II. Devaluation is a deliberate cut in a currency's fixed value by the government.

Options for question 38

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AnswerB · Only II

  1. Revaluation raises the currency's value, making exports dearer abroad. I is false.

  2. II is the definition of devaluation.

Under the gold standard, exchange rates between currencies were

Options for question 39

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AnswerB · fixed by the amount of gold each currency could be exchanged for

  1. Each currency had a fixed gold value, so the rate between two currencies was the ratio of their gold values.

Under a fixed rate, the government changes the official rate from ₹70 to ₹77 per dollar. This is a

Options for question 40

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AnswerC · devaluation of the rupee by about 9%

  1. An official cut in the rupee's value is a devaluation.

  2. ₹1 was worth 1/70 dollar and is now 1/77: a fall of (77 − 70) ÷ 77 ≈ 9% (the dollar's price rose 10%).

Worth noting

'Depreciation' is the market word; when the government moves a fixed rate, it is devaluation.

Assertion (A): A country with a fixed exchange rate and a large BoP deficit may have to devalue.

Reason (R): Under a fixed rate, the central bank can create unlimited foreign exchange reserves.

Options for question 41

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AnswerC · A is true, but R is false.

  1. A is true: a lasting shortage of foreign exchange drains reserves until the rate must change.

  2. R is false: a central bank can print its own currency, not foreign currency.

Managed floating

9 questions

Managed floating is a system in which

Options for question 42

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AnswerB · the market sets the rate, with central bank intervention

  1. It mixes a floating rate with intervention, sometimes called a 'dirty float'.

India's exchange rate system today is best described as

Options for question 43

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AnswerD · managed floating

  1. Since 1993 the rupee's value has been set in the market, with the RBI stepping in to curb excessive volatility.

To stop the rupee from falling too fast, the RBI is most likely to

Options for question 44

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AnswerA · sell dollars from its reserves

  1. Selling dollars adds to their supply in the market, which supports the rupee.

When large foreign inflows push the rupee up too fast, the RBI may

Options for question 45

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AnswerD · buy dollars in the market and add them to reserves

  1. Buying dollars raises demand for them, which slows the rupee's rise.

Assertion (A): Managed floating tries to combine the merits of fixed and flexible rates.

Reason (R): The market sets the rate, while the central bank smooths out sharp movements.

Options for question 46

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AnswerA · Both A and R are true, and R is the correct explanation of A.

  1. Market setting gives flexibility; intervention gives some stability. R explains A.

Read the two statements and choose the correct option.

I. Under managed floating, the central bank intervenes only to smooth sharp swings, not to fix a rate.

II. Managed floating needs no foreign exchange reserves at all.

Options for question 47

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AnswerA · Only I

  1. The aim is to limit volatility, not to defend a fixed level. I is true.

  2. Intervening means buying and selling dollars, which needs reserves. II is false.

Match each system with its description.

List IList II
A. Flexible exchange rateI. Each currency's value tied to a fixed amount of gold
B. Fixed exchange rateII. Market-set with central bank intervention
C. Managed floatingIII. Set and held by the government
D. Gold standardIV. Set only by market demand and supply
Options for question 48

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AnswerA · A-IV, B-III, C-II, D-I

  1. Floating is market only; fixed is government only; managed floating mixes the two; the gold standard tied currencies to gold.

In March 1993, India moved to

Options for question 49

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AnswerA · a market-determined exchange rate for the rupee

  1. After a brief dual-rate system in 1992, the rupee's rate was unified and left to the market in March 1993, with RBI intervention.

Read the two statements and choose the correct option.

I. Under managed floating, the RBI fixes the rupee's value at a set number every day.

II. Under managed floating, the RBI's interventions change the supply of or demand for dollars in the market.

Options for question 50

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AnswerB · Only II

  1. The RBI does not fix a rate; the market sets it. I is false.

  2. Selling dollars adds to supply; buying them adds to demand. II is true.

NTA's Economics syllabus is three courses: Introductory Microeconomics, Introductory Macroeconomics and Indian Economic Development, each split into units with a list of topics. It prints no chapters and no split of the 50 questions across the courses. So the areas here are NTA's three courses, and the chapters inside them are ours: a unit that covers several ideas, such as consumer behaviour and demand, is split into a chapter for each, so that a chapter can be practised in one sitting. All three courses are here.