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Question

Which one of the following is used as anti-bacterial agent?

A
Ethanol
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B
Ethanoic acid
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C
Ethane
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D
Ethyne
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Solution

The correct option is A Ethanol
Ethanol has antibacterial properties as it helps to kill many bacteria, viruses, and fungi (by denaturing their proteins and dissolving their lipids). It is thus used in medical/antibacterial wipes and in hand sanitizers.
Ethanoic or acetic acid is used in making dyes, pigments, and paint and coating additives.
Ethane is used in the production of ethylene for making plastics, anti-freeze and detergents; it's a ripening agent for foods, a refrigerant.
Methane is used primarily as fuel to make heat and light. It is also used to manufacture chemicals.

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