Which one of the following pairs is not correctly matched? Industry Location

The correct answer is B. Detroit is the world's automobile capital, often called the "Motor City" because General Motors, Ford and Chrysler grew there. It has no link to cotton textiles, so this pair is the mismatch.

• A (Paper - Ontario): Correct. Ontario and Quebec in Canada have large pulp and paper industries, supported by boreal forests and hydro power.
• C (Chemical - Texas): Correct. The Gulf Coast around Houston, Texas is a major petrochemical belt, based on crude oil, natural gas and port access.
• D (Motor car - Nagoya): Correct. Toyota is headquartered in Toyota City, near Nagoya in Japan, which makes Nagoya a major automobile cluster.

The concept here is the location of industries, shaped by raw materials, markets, labour, power and transport, as in Weber's model. This links to Physical and Economic Geography and to Mains GS-I on industrial location and agglomeration.

Trap: Aspirants who recall that Detroit is an industrial city may assume it fits any manufacturing pair. Cotton textiles are tied to Lancashire in England and to Ahmedabad, Mumbai and Coimbatore in India, not to Detroit.