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Economics Official 2019-2020 ISC (Commerce) Class 12 Question Paper Solution

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Economics [Official]
Marks: 80 CISCE
ISC (Commerce)
ISC (Arts)

Academic Year: 2019-2020
Date: March 2020
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(Candidates are allowed additional 15 minutes for only reading the paper.
They must NOT start writing during this time.)

Answer Question 1 (compulsory) from Part I and five questions from Part II.

The intended marks for questions or parts of questions are given in brackets [ ].


PART I (20 Marks)
Answer all questions.
[2]1. (i) | Answer briefly each of the following questions (i) to (x):

What is meant by production function?

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Chapter: [7] Laws of Returns: Returns to a Factor and Returns to Scale
[2]1. (ii)

Explain the meaning of the income effect.

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Chapter:
[2]1. (iii)

What is a progressive tax?

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Chapter:
[1]1. (iv) (a)

Explain the law of diminishing marginal utility.

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Chapter:
[1]1. (iv) (b)

State and explain the assumptions of the law of diminishing marginal utility.

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Chapter:
[2]1. (v)

Differentiate between autonomous capital flow and accommodating capital flow.

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Chapter:
[1]1. (vi) (a)

What is meant by MPS?

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Chapter:
[1]1. (vi) (b)

How is the multiplier related to the marginal propensity to save?

Concept: undefined - undefined
Chapter:
[2]1. (vii)

State the two primary functions of money.

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Chapter:
[2]1. (viii)

Show with the help of a diagram, a situation when change in supply will keep the equilibrium quantity of the commodity unchanged.

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Chapter:
[1]1. (ix) (a)

What is the selling cost?

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Chapter:
[1]1. (ix) (b)

Name one market where the selling cost is applicable.

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Chapter:
[2]1. (x)

State the meanings of the following:

Operating Surplus

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Chapter:
PART II (60 Marks)
Answer any five questions.
[3]2. (a)

Explain the geometric method of calculating the elasticity of supply.

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Chapter:
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[3]2. (b)

How does diminishing marginal rate of substitution affect the shape of indifference curve?

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Chapter:
[6]2. (c)

The marginal utility schedule of a rational consumer is given below. If the price of a commodity is ₹ 35, explain with the help of a diagram, how the consumer attains equilibrium.

Number of the
commodity bought
1 2 3 4 5
MU 50 45 40 35 30
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Chapter:
[3]3. (a)

Explain any two reasons for the supply curve to be positively sloped.

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Chapter:
[3]3. (b)

Explain how the equilibrium price can be determined with the help of demand and supply curves.

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Chapter:
[6]3. (c)

Discuss the three stages of the law of variable proportions with the help of diagrams. In which stage will a rational producer like to operate?

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Chapter:
[3]4. (a)

When price of commodity X changes from ₹ 40 per unit to ₹ 20 per unit, its demand increases by 20 units. If price elasticity of demand is 0.5, calculate the initial and final quantity demanded of commodity X.

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Chapter:
[3]4. (b)

Using a diagram, explain the relationship between MR and TR under imperfect competition. 

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Chapter:
[3]4. (c) (i)

Using a diagram, explain the concept of:

Shut-down point

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Chapter:
[3]4. (c) (ii)

Using a diagram, explain the concept of:

Break-even point of a firm in perfect competition under short run.

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Chapter:
[1.5]5. (a) (i)

Give reasons for the following:

TC and TVC curves do not start from the same point.

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Chapter:
[1.5]5. (a) (ii)

Give reasons for the following:

ATC and AVC curves do not touch each other.

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Chapter:
[3]5. (b)

Explain two factors affecting the demand for a commodity other than its price.

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Chapter:
[6]5. (c)

Differentiate between a perfectly competitive market and a monopolistically competitive market on the basis of the following:

  1. Nature of product
  2. Price influence
  3. Relationship between AR and MR
  4. Demand Curve
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Chapter:
[3]6. (a)

Mention any three methods of redemption of public debt.

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Chapter: [28] Fiscal Policy
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[1.5]6. (b) (i)

How is fiscal deficit different from primary deficit?

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Chapter:
[1.5]6. (b) (ii)

Explain one implication of fiscal deficit.

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Chapter:
[6]6. (c)

Explain any four causes of an adverse balance of payments of a country.

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Chapter:
[3]7. (a)

Mention the components of M1, M2, and M3 measures of money supply by the RBI.

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Chapter:
[1.5]7. (b) (i)

Explain the following function of the Central Bank:

Custodian of foreign exchange reserves.

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Chapter:
[1.5]7. (b) (ii)

What is meant by the following function of the Central bank:

Lender of the last resort

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Chapter:
[6]7. (c)

Discuss the different ways in which commercial banks extend loans to their customers.

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Chapter:
[3]8. (a)

Briefly explain the mechanism of the investment multiplier with the help of a schedule. Take initial increase in autonomous investment as ₹ 1000 crores and MPC as 0.8.

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Chapter:
[3]8. (b)

Explain the various components of aggregate demand in an economy with the help of a diagram.

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Chapter:
[3]8. (c) (i)

Explain and show graphically the concept of deflationary gap.

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Chapter:
[3]8. (c) (ii)

Discuss two monetary measures to correct the deflationary gap.

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Chapter:
[1.5]9. (a) (i)

How can we obtain national income from GDPMP.

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Chapter:
[1.5]9. (a) (ii)

How can we obtain personal disposable income from personal income?

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Chapter:
[1.5]9. (b) (i)

With the help of relevant examples, explain the meaning of leakages in the circular flow of income.

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Chapter:
[1.5]9. (b) (ii)

With the help of relevant examples, explain the meaning of injections in the circular flow of income.

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Chapter:
[6]9. (c)

From the following data, calculate GNPFC, NDPFC, and national income:

  Item ₹ in crores
(i) Private final consumption expenditure 950
(ii) Gross domestic fixed capital formation 370
(iii) Consumption of fixed capital 20
(iv) Government final consumption expenditure 410
(v) Closing stock 300
(vi) Subsidy 80
(vii) Net exports (−)50
(viii) Wages and salaries 780
(ix) Net factor income from abroad (−)40
(x) Indirect tax 180
(xi) Opening stock 150
(xii) Profit before tax 200
Concept: undefined - undefined
Chapter:

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