ExamSpark Class 12 Economics
Subject: CBSE Class 12 Economics (NCERT Full-Syllabus Practice)
Detailed Question Analysis
Q1. Which of the following is excluded while calculating Gross Domestic Product at market price?
Correct Answer: Option C (Services of housewives within their own homes)
Concept Explanation: Services of housewives are not included because they are non-market services and difficult to measure monetarily.
Q2. The problem of "for whom to produce" is related to:
Correct Answer: Option C (Distribution of national income among people)
Concept Explanation: This problem concerns how goods and services are distributed among different sections of society based on income.
Q3. Under which market structure can a firm influence the market price partially?
Correct Answer: Option C (Monopolistic competition)
Concept Explanation: In monopolistic competition, product differentiation gives firms some control over pricing.
Q4. If Marginal Cost is below Average Cost, then Average Cost will:
Correct Answer: Option B (Fall)
Concept Explanation: Marginal Cost pulls Average Cost downward when it is less than Average Cost.
Q5. Which of the following is a liability of the Reserve Bank of India?
Correct Answer: Option B (Currency notes issued)
Concept Explanation: Currency notes issued by RBI are liabilities because RBI promises to pay the bearer the value of the note.
Q6. A rise in the income of consumers causes demand for coarse cereals to fall. Coarse cereals are most likely:
Correct Answer: Option C (Inferior goods)
Concept Explanation: Demand for inferior goods falls as consumer income rises because consumers shift to better alternatives.
Q7. A firm's Total Fixed Cost is \(\mathrm{Rs.\ 1,200}\). At output level of 300 units, Average Fixed Cost will be:
Correct Answer: Option C (\(\mathrm{Rs.\ 4}\))
Concept Explanation: Average Fixed Cost = Total Fixed Cost / Output = 1200 / 300 = \(\mathrm{Rs.\ 4}\).
Q8. During inflation, RBI sells government securities in the open market. What is the likely effect?
Correct Answer: Option B (Reduction in money supply)
Concept Explanation: Sale of securities withdraws money from circulation, reducing liquidity and helping control inflation.
Q9. Which of the following is an example of a capital good?
Correct Answer: Option C (Machine purchased by a factory)
Concept Explanation: Capital goods are durable goods used for further production of other goods and services.
Q10. Which of the following transactions creates foreign exchange outflow for India?
Correct Answer: Option D (Import of machinery from Germany)
Concept Explanation: Imports require payment in foreign currency, leading to foreign exchange outflow.
Q11. Assertion (A): Under monopoly, Average Revenue curve slopes downward. Reason (R): A monopolist must lower price to sell additional units.
Correct Answer: Option A (Both A and R are true, and R is the correct explanation of A)
Concept Explanation: Since the monopolist faces the market demand curve, selling more units requires lowering the price.
Q12. Assertion (A): Fiscal deficit can increase inflationary pressure in the economy. Reason (R): Higher government borrowing may increase aggregate demand.
Correct Answer: Option A (Both A and R are true, and R is the correct explanation of A)
Concept Explanation: Higher borrowing and spending by government can raise aggregate demand and contribute to inflation.
Q13. Read the following case carefully: The government announces a subsidy on solar panels to promote renewable energy usage among households. Which effect is most likely?
Correct Answer: Option C (Increase in supply and demand of solar panels)
Concept Explanation: Subsidies lower prices and encourage both production and consumption of solar panels.
Q14. Read the passage carefully: An economy faces a severe recession with rising unemployment and falling private investment. The central bank decides to reduce repo rate. What is the expected objective of this step?
Correct Answer: Option B (Encourage borrowing and investment)
Concept Explanation: Lower repo rate reduces cost of borrowing, encouraging businesses and consumers to spend and invest more.
Q15. If Marginal Propensity to Save (\(\mathrm{MPS}\)) is 0.25, the value of multiplier will be:
Correct Answer: Option C (4)
Concept Explanation: \(k=\frac{1}{\mathrm{MPS}}\) k = 1 / 0.25 = 4.
Q16. Which of the following situations represents deficient demand?
Correct Answer: Option C (Aggregate demand is less than aggregate supply at full employment)
Concept Explanation: Deficient demand occurs when total spending in the economy is insufficient to purchase full-employment output.
Q17. A firm in monopolistic competition spends heavily on advertisements mainly because:
Correct Answer: Option C (Products are differentiated)
Concept Explanation: Advertising helps firms distinguish their differentiated products from competitors' products.
Q18. Which of the following combinations is most suitable to control inflation?
Correct Answer: Option B (Increase in repo rate and reduction in public expenditure)
Concept Explanation: Contractionary monetary and fiscal policies reduce aggregate demand and help control inflation.
Q19. If price elasticity of demand for a commodity is perfectly inelastic, then rise in price will:
Correct Answer: Option B (Increase total revenue)
Concept Explanation: With perfectly inelastic demand, quantity demanded remains unchanged despite price rise, increasing total revenue.
Q20. Autonomous investment in an economy rises by \(\mathrm{Rs.\ 250\ crore}\). If \(\mathrm{MPC}\) = 0.8, what will be the total increase in income?
Correct Answer: Option D (\(\mathrm{Rs.\ 1,250\ crore}\))
Concept Explanation: \(k=\frac{1}{1-\mathrm{MPC}}\) Multiplier = 1 / (1 - 0.8) = 5 Increase in income = 5 \(\times\) 250 = \(\mathrm{Rs.\ 1,250\ crore}\).