ExamSpark Class 12 Economics
Subject: CBSE Class 12 Economics (NCERT Full-Syllabus Practice)
Detailed Question Analysis
Q1. Which of the following is a feature of a mixed economy?
Correct Answer: Option C (Coexistence of public and private sectors)
Concept Explanation: A mixed economy combines features of both capitalism and socialism where both government and private enterprises operate together.
Q2. Which of the following is included in factor income from abroad?
Correct Answer: Option C (Salary earned by an Indian working in the USA)
Concept Explanation: Factor income from abroad includes income earned for productive services rendered abroad by normal residents.
Q3. Under perfect competition, firms sell:
Correct Answer: Option B (Homogeneous products)
Concept Explanation: Perfect competition is characterized by homogeneous products produced by many firms.
Q4. If Total Product increases at a decreasing rate, Marginal Product is:
Correct Answer: Option C (Falling but positive)
Concept Explanation: When TP rises at a diminishing rate, MP remains positive but starts declining.
Q5. Which of the following is a quantitative method of credit control?
Correct Answer: Option C (Repo rate)
Concept Explanation: Repo rate directly affects the volume of credit and money supply, making it a quantitative tool.
Q6. A rise in the price of petrol reduces the use of private cars and increases demand for public transport. Public transport and private cars are:
Correct Answer: Option A (Substitute goods)
Concept Explanation: Public transport acts as a substitute for private cars when operating costs of cars rise.
Q7. A producer incurs a total cost of \(\mathrm{Rs.\ 12,000}\) to produce 400 units. Average cost per unit is:
Correct Answer: Option C (\(\mathrm{Rs.\ 30}\))
Concept Explanation: Average Cost = Total Cost / Output = 12,000 / 400 = \(\mathrm{Rs.\ 30}\) per unit.
Q8. The RBI purchases government securities from commercial banks. This will most likely:
Correct Answer: Option B (Increase banks' lending power)
Concept Explanation: RBI injects money into the banking system through purchase of securities, increasing liquidity and lending capacity.
Q9. Which of the following causes a movement along the demand curve?
Correct Answer: Option B (Change in price of the commodity itself)
Concept Explanation: Movement along the demand curve occurs only due to changes in the commodity's own price.
Q10. Which of the following is a component of current account in Balance of Payments?
Correct Answer: Option C (Export of services)
Concept Explanation: Current account records trade in goods and services, income, and transfer payments.
Q11. Assertion (A): Under monopolistic competition, firms spend on advertisements. Reason (R): Products are differentiated in monopolistic competition.
Correct Answer: Option A (Both A and R are true, and R is the correct explanation of A)
Concept Explanation: Advertising helps firms promote differentiated products and attract consumers.
Q12. Assertion (A): Increase in bank rate can reduce inflationary pressure. Reason (R): Higher bank rate discourages borrowing and reduces money supply.
Correct Answer: Option A (Both A and R are true, and R is the correct explanation of A)
Concept Explanation: Higher bank rate raises cost of credit, reducing borrowing, investment, and aggregate demand.
Q13. Read the following case carefully: The government launches a rural employment scheme during an economic slowdown to increase purchasing power in villages. Which macroeconomic objective is mainly targeted?
Correct Answer: Option B (Employment generation and demand creation)
Concept Explanation: Employment schemes increase income and consumption demand, helping revive economic activity.
Q14. Read the passage carefully: India experiences a sharp increase in foreign portfolio investment inflows. Demand for Indian rupee rises in the foreign exchange market. What is the likely impact on the rupee?
Correct Answer: Option B (Appreciation)
Concept Explanation: Higher demand for domestic currency in foreign exchange markets causes appreciation of the rupee.
Q15. If Marginal Propensity to Save is 0.2, then the value of \(\mathrm{MPC}\) will be:
Correct Answer: Option C (0.8)
Concept Explanation: \(\mathrm{MPC}+\mathrm{MPS}=1\) \(\mathrm{MPC}\) = 1 - 0.2 = 0.8.
Q16. Which of the following is an example of indirect tax?
Correct Answer: Option D (GST)
Concept Explanation: Indirect taxes are imposed on goods and services and can be shifted to consumers. GST is an indirect tax.
Q17. A perfectly competitive firm will continue producing in the short run as long as:
Correct Answer: Option A (Price covers Average Variable Cost)
Concept Explanation: The shutdown point occurs when price falls below AVC. If price covers AVC, production continues.
Q18. Which policy combination is most suitable during recession?
Correct Answer: Option C (Reduction in repo rate and increase in government spending)
Concept Explanation: Expansionary fiscal and monetary policies help increase aggregate demand during recession.
Q19. If demand for a commodity remains unchanged despite a rise in price, demand is:
Correct Answer: Option B (Perfectly inelastic)
Concept Explanation: Perfectly inelastic demand means quantity demanded does not change at all with price changes.
Q20. Investment increases by \(\mathrm{Rs.\ 500\ crore}\) in an economy where \(\mathrm{MPC}\) = 0.6. The increase in national income will be:
Correct Answer: Option D (\(\mathrm{Rs.\ 1,250\ crore}\))
Concept Explanation: \(k=\frac{1}{1-\mathrm{MPC}}\) Multiplier = 1 / (1 - 0.6) = 2.5 Increase in income = 2.5 \(\times\) 500 = \(\mathrm{Rs.\ 1,250\ crore}\).