What do you mean by demand for a commodity

Answer :

The demand for a commodity refers to the amount of the commodity which will be purchased at a particular price during a particular period of time.

For example:

Demand for a commodity –X refers to (say) 10 units of X if price of X is Rs. 5 per unit, 8units of X if price is Rs.6 per unit, 6 unit of X if price is Rs. 7 per unit.

Quantity demanded of a commodity-X refers to 8 units of X if price happens to be Rs. 6 per unit.

Demand refers to all quantities of a commodity that the consumer is ready to buy at different possible price of that commodity.Quantity demanded refers to specific quantity to be purchased against a specific price of the commodity.