Problem and Solutions in Economics Class 12

5. Price Elasticity of Demand, 6.Production function : Returns to a Factor and Returns to Scale, 7. Production Costs, 8. Concepts of Revenue, 9. Producer Equilibrium : Meaning and Conditions, 11. Elasticity of Supply, 17. Concepts and Aggregates Related to National Income, 18. Measurement of National Income, 23. Aggregate Demand, Aggregate supplyand Related Concepts (Propensity to Consume, Propensity to Save and Investment), 25.Investment Multiplier and its Mechanism.