IAS General Studies Prelims Question No. 53

A ‘heat island’ is defined as an area which is relatively hotter than its neighbouring rural areas. Which of the following is the primary reason for creation of heat island?
[A] Use of air-conditioners
[B] Large number of vehicles
[C] Painted tall buildings
[D] Concrete roads
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[A] Use of air-conditioners
All given options contribute in one or the other way to form a heat island. But the primary cause is use of air-conditioners which release greater amount of greenhouse gases.