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Introductory Microeconomics

Class 12 · Economy

Real UPSC Prelims questions from 2016–2026, linked to this book. Try each one first, then open the answer. 2026 answers follow UPSC's provisional answer key.

Ch 2 · Theory of Consumer Behaviour

Prelims 2021 · Q4

Consider the following statements:

Other things remaining unchanged, market demand for a good might increase if

1.price of its substitute increases
2.price of its complement increases
3.the good is an inferior good and income of the consumers increases
4.its price falls

Which of the above statements are correct?

(a)1 and 4 only
(b)2, 3 and 4
(c)1, 3 and 4
(d)1, 2 and 3

Show answer

UPSC's answer: (a)

NCERT answers it: Class 12 Introductory Microeconomics, Ch 2 (Theory of Consumer Behaviour).

Microeconomics (ch 2): a dearer substitute raises demand for a good, and a dearer complement lowers it. Demand for an inferior good falls as income rises, and a lower price raises the quantity demanded. So 1 and 4: (a).

Hindi version: UPSC's official question paper (2021), question 4 ↗

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