Telangana PSC Group 2 Prelims 2016 Paper 1

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Question : 19 of 150

Marks: +1, -0

Ozone layer protects earth from ultraviolet rays, Which of the following harms the ozone layer?

Burning of wood for cooking
CO₂ used in soda water bottle
Urea used as fertiliser
Chloro Fluoro Carbon used in Air-Conditioners

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