Q. The Great Smog of 1952 took place in which of the following cities?
Answer: London
Notes: The Great Smog of 1952, also known as the Killer Fog, took place in London. On 5 December 1952, a thick yellow smog brought the London city to a standstill for four days and it is estimated to have killed more than 4,000 people. Coal combustion was considered as the main reason for the formation of smog.

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