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Class 12 Theory of Consumer Behaviour worksheet

CBSE Social Science. Utility, budget line, indifference curves, the consumer’s optimum, demand, normal and inferior goods, and price elasticity of demand. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.

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Sample questions

Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.

Section A · multiple choice

1.
The change in total utility from consuming one more unit is:
1. average utility
2. opportunity cost
3. total utility
4. marginal utility
Answer
(d) marginal utility
2.
What happens to the demand for a good if income rises and the good is normal?
1. the demand curve shifts right
2. the supply curve shifts instead
3. the demand curve becomes vertical
4. a movement up along the demand curve
Answer
(a) the demand curve shifts right
3.
Which pair of goods are complements?
1. pens and pencils
2. bus rides and train rides
3. tea and coffee
4. bread and butter
Answer
(d) bread and butter

Section B · short answer

4.
State the law of diminishing marginal utility.
Answer
As more units of a good are consumed, the utility from each extra unit keeps falling.
5.
Substitutes or complements? (a) tea and coffee (b) butter and margarine
Answer
(a) substitutes (b) substitutes

Section C · long answer

6.
Explain the consumer’s optimum with indifference curves and a budget line.
Answer
She picks the bundle on the budget line on the highest indifference curve she can reach, where the budget line is tangent to it, so MRS equals the price ratio p₁/p₂.

Fresh sheets for your child

In the app, every Theory of Consumer Behaviour sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.

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