Which one of the following used as anti- bacterial dye for skin infection ?

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(IES/)
Which one of the following used as anti- bacterial dye for skin infection ?

question_subject: 

Science

question_exam: 

IES

stats: 

0,10,25,10,7,10,8

keywords: 

{'bacterial dye': [1, 0, 0, 0], 'skin infection': [2, 0, 0, 0], 'gentian violet': [1, 0, 0, 0], 'nicotinamide': [2, 0, 0, 0], 'barium': [1, 1, 1, 2], 'cobalt': [0, 0, 0, 1]}

The correct answer is option 3, Gentian violet. Gentian violet is a type of dye that has antimicrobial properties, specifically against bacteria. It is commonly used to treat fungal and bacterial infections of the skin.

Option 1, Barium, is not used as an antibacterial dye for skin infections. Barium is a chemical element that is primarily used in medical imaging tests.

Option 2, Cobalt, is also not used as an antibacterial dye for skin infections. Cobalt is a transition metal that is used in various industrial applications, such as in the production of metal alloys and pigments.

Option 4, Nicotinamide, is a form of vitamin B3 that is used in cosmetic and skincare products for its anti-inflammatory and skin-improving properties. However, it is not primarily used as an antibacterial dye for skin infections.

Therefore, the correct option is 3, Gentian violet, as it is a dye commonly used to treat bacterial and fungal infections of the skin.