Which one of the following metros has become the first metro in India

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Which one of the following metros has become the first metro in India to use ultraviolet rays to sanitise train coaches ?

Delhi Metro
Bangalore Metro
Lucknow Metro
Chennai Metro
This question was previously asked in
UPSC SO-Steno – 2017
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The correct answer is C. Lucknow Metro became the first metro in India to use ultraviolet rays to sanitise train coaches.
In February 2021, Lucknow Metro Rail Corporation (LMRC) announced it was using UV light technology to sanitise train coaches, a method certified by DRDO for its effectiveness against viruses and bacteria. This was done as a measure against the spread of COVID-19.
UV-C radiation is known to be effective in killing or inactivating microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions. Lucknow Metro’s adoption of this technology was a pioneering effort in the Indian metro network.

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