मराठी

A 500 g toothpaste sample has 0.2 g fluoride concentration. What is the concentration of fluorine in terms of ppm level? - Chemistry (Theory)

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प्रश्न

A 500 g toothpaste sample has 0.2 g fluoride concentration. What is the concentration of fluorine in terms of ppm level?

पर्याय

  • 250

  • 200

  • 400

  • 1000

MCQ
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उत्तर

400

Explanation:

Given: Mass of fluoride (solute) = 0.2 g

Mass of toothpaste (sample/solution) = 500 g

We know that

ppm = `"mass of solute"/"mass of solution" xx 10^6`

ppm = `0.2/500 xx 10^6`

ppm = 400

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पाठ 2: Solutions - OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTIONS [पृष्ठ ११५]

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नूतन Chemistry Part 1 and 2 [English] Class 12 ISC
पाठ 2 Solutions
OBJECTIVE (MULTIPLE CHOICE) TYPE QUESTIONS | Q 29. | पृष्ठ ११५
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