NCERT Solutions for Class 9 Social Science Chapter 9: The Price Puzzle: What Drives the Market – Free PDF Download

Chapter 9 of the new NCERT Class 9 Social Science textbook is The Price Puzzle: What Drives the Market, part of the Economics section. It explains how demand, supply, and price interact in a market.

Last Updated: September 23, 2026

Demand

Q: What is demand in economics?
A: Demand refers to the quantity of a good or service that buyers are willing and able to purchase at a given price during a given time period.

Supply

Q: What is supply in economics?
A: Supply refers to the quantity of a good or service that sellers are willing and able to offer for sale at a given price during a given time period.

How Price Is Determined

Q: How does the interaction of demand and supply determine the price of a good?
A: When demand is higher than supply, prices tend to rise; when supply is higher than demand, prices tend to fall; the price where the quantity demanded equals the quantity supplied is called the equilibrium price.

The Law of Demand

Q: What is the law of demand?
A: The law of demand states that, other things being equal, the higher the price of a good, the lower the quantity demanded, and the lower the price, the higher the quantity demanded — an inverse relationship between price and quantity demanded.

Frequently Asked Questions

What happens to price when there is a shortage of a good?
When a good is in short supply relative to demand, its price tends to rise, since buyers are willing to pay more to obtain the limited quantity available.

What is equilibrium price?
Equilibrium price is the price at which the quantity of a good that buyers want to purchase exactly matches the quantity that sellers want to sell.

Written by Satish

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