Question

Concentration of \(H_2O_2\) in mouth washes preparation is w/v.

• A. 3%
• B. 6%
• C. 9%
• D. 12%

Hint:

$H_{2}O_{2}$ mouthwash concentration is typically 6% w/v.

Answer 1

The Correct Option is B

Step 1: Concept
Hydrogen peroxide ($H_{2}O_{2}$) is used in dentistry as an antiseptic and oxidizing agent.

Step 2: Meaning
Concentration is typically expressed as percentage weight/volume (w/v).

Step 3: Analysis
While $H_{2}O_{2}$ is often sold as a 3% (10 volumes) solution for minor cuts, standard pharmaceutical preparations for concentrated mouthwashes or specific dental applications often utilize higher concentrations that are subsequently diluted. Per the provided key, the concentration in focus here is 6%.

Step 4: Conclusion
Thus, 6% w/v is the specified concentration for these preparations.

Final Answer: (B)