Correct option is B
The recommended chlorine concentration for washing fruits and vegetables is 50–200 ppm to ensure effective disinfection without causing harm.
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For washing fruits and vegetables, the concentration of Chlorine should be:
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Deficiency of Vitamin A causes
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The formula for Ethane is
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The building units of oligosaccharides and polysaccharides are
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Environmental Protection Act was enacted in the year
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