Vidaara.orgClass 11 · Mathematics
CodeVID-M11-WS
Demand — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Demand for a good must be backed by:
- A.Desire only
- B.Ability and willingness to pay
- C.Advertising
- D.A government order
2.
The total demand of all consumers in a market is:
- A.Individual demand
- B.Market demand
- C.Joint demand
- D.Derived demand
3.
A table showing quantity demanded at different prices is a:
- A.Demand schedule
- B.Demand curve
- C.Budget line
- D.Supply schedule
4.
The demand curve normally slopes:
- A.Upward
- B.Downward
- C.Horizontally
- D.Vertically
5.
The law of demand holds 'other things remaining':
- A.Changing
- B.Constant
- C.Zero
- D.Negative
6.
When price rises, quantity demanded usually:
- A.Rises
- B.Falls
- C.Stays the same
- D.Doubles
7.
Tea and coffee are examples of:
- A.Complements
- B.Substitutes
- C.Giffen goods
- D.Unrelated goods
8.
Car and petrol are examples of:
- A.Substitutes
- B.Complements
- C.Inferior goods
- D.Giffen goods
9.
Which is a determinant of demand other than the good's own price?
- A.Income of the consumer
- B.The colour of the shop
- C.The day of the week only
- D.The seller's name
10.
An exception to the law of demand is a:
- A.Normal good
- B.Giffen good
- C.Substitute
- D.Complement
11.
A change in the good's own price causes a:
- A.Movement along the demand curve
- B.Shift of the demand curve
- C.New demand schedule only
- D.No change
12.
A fall in price causing more to be demanded is called:
- A.Contraction
- B.Extension (expansion)
- C.Increase in demand
- D.Decrease in demand
13.
A change in income or tastes causes a:
- A.Movement along the curve
- B.Shift of the demand curve
- C.Vertical curve
- D.No effect
14.
A rightward shift of the demand curve indicates:
- A.Decrease in demand
- B.Increase in demand
- C.Contraction
- D.No change
15.
More demanded at a higher price would be shown by:
- A.A downward demand curve
- B.An upward demand curve (exception)
- C.A horizontal line
- D.The budget line
Section B — Challenge / Olympiad (2 marks each)
10 × 2 = 20 marks
16.
A poor person wants a car but cannot afford one. In economic terms this is:
- A.A want, not demand (no ability to pay)
- B.Market demand
- C.An exception to the law
- D.A shift in demand
17.
The price of sugar falls and households buy more sugar. This is best described as a:
- A.Movement (extension) along the demand curve
- B.Rightward shift of the curve
- C.Leftward shift
- D.New curve
18.
People's incomes rise and they buy more clothes at every price. The clothes demand curve will:
- A.Shift to the right
- B.Shift to the left
- C.Not move
- D.Become vertical
19.
When the price of coffee rises, the demand for tea increases. This happens because the two goods are:
- A.Substitutes
- B.Complements
- C.Giffen goods
- D.Unrelated
20.
Expecting petrol prices to rise next week, drivers fill their tanks today. This shows demand is affected by:
- A.Expectations of future prices
- B.The seller's mood
- C.The colour of the pump
- D.Population only
21.
A diamond necklace sells more when its price is raised because owning it signals wealth. This is an exception known as a:
- A.Status/prestige (Veblen) good
- B.Complement
- C.Substitute
- D.Normal good
22.
A leftward shift of the demand curve for a good could be caused by:
- A.A fall in consumer income (for a normal good)
- B.A fall in the good's own price
- C.A rise in the good's own price
- D.Nothing
23.
Why is the phrase 'other things remaining constant' essential to the law of demand?
- A.Because if other determinants also change, the simple inverse price–quantity relation may not hold
- B.Because price never changes
- C.Because demand is fixed
- D.Because there is no quantity
24.
A rise in a good's own price causing less to be bought is shown as:
- A.An upward movement (contraction) along the curve
- B.A rightward shift
- C.A leftward shift
- D.A new curve
25.
Which single rule correctly separates a movement from a shift?
- A.Own price → movement; any other factor → shift
- B.Any change → shift
- C.Any change → movement
- D.Income → movement; price → shift
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Ability and willingness to pay
- (B) Market demand
- (A) Demand schedule
- (B) Downward
- (B) Constant
- (B) Falls
- (B) Substitutes
- (B) Complements
- (A) Income of the consumer
- (B) Giffen good
- (A) Movement along the demand curve
- (B) Extension (expansion)
- (B) Shift of the demand curve
- (B) Increase in demand
- (B) An upward demand curve (exception)
Section B — Challenge / Olympiad (2 marks each)
- (A) A want, not demand (no ability to pay)
- (A) Movement (extension) along the demand curve
- (A) Shift to the right
- (A) Substitutes
- (A) Expectations of future prices
- (A) Status/prestige (Veblen) good
- (A) A fall in consumer income (for a normal good)
- (A) Because if other determinants also change, the simple inverse price–quantity relation may not hold
- (A) An upward movement (contraction) along the curve
- (A) Own price → movement; any other factor → shift
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