UPSC NDA II 2023 General Ability Solved Paper

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Question : 90 of 150

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What is the action of litmus on ethanol?

Litmus is neutral towards ethanol
Ethanol turns blue litmus to red; confirming acidic nature of ethanol
Ethanol turns red litmus to blue; confirming basic nature of ethanol
Ethanol decolorizes litmus through bleaching action

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