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Question

An advice is given by the government of India to all the pharmaceutical companies for the manufacture of a medicine having a concentration of 2700 ppb used for treating Covid-19 patients. The concentration of medicine in %(w/w) is:

A
2.7×104
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B
6.5×104
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C
3.2×103
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D
6.5×103
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Solution

The correct option is A 2.7×104
part per billion=mass of solutemass of solution×109
mass of solutemass of solution=parts per billion109
mass percentage = mass of solutemass of solution×100
mass percentage=given value in ppb109×100
=2700109×100=2.7×104 %(w/w)

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