Question

Which solution is used to maintain sterility in laboratories?

• A. Sodium chloride
• B. Sodium hypochlorite
• C. Sodium cyanide
• D. Sodium sulphate

Hint:

Always dilute sodium hypochlorite properly when using it for sterilization to avoid damage to surfaces and ensure effective sterilization.

Answer 1

The Correct Option is B

Sodium hypochlorite (NaOCl) is a commonly used disinfectant and bleach. It is used in laboratories to maintain sterility by killing microorganisms such as bacteria, viruses, and fungi. It is especially effective for cleaning surfaces, sterilizing equipment, and disinfecting spaces.

(1) Sodium Hypochlorite:
- Sodium hypochlorite works by releasing chlorine, which is a powerful disinfectant. It is widely used in laboratory settings to prevent contamination and maintain a sterile environment.

(2) Why Other Options Are Incorrect:
- Sodium chloride (Option 1) is common table salt and does not have disinfecting properties to maintain sterility.
- Sodium cyanide (Option 3) is a toxic substance and is not used for maintaining sterility.
- Sodium sulphate (Option 4) is an inorganic salt and is not used for disinfection or sterilization.

Conclusion: The correct solution used to maintain sterility in laboratories is sodium hypochlorite, known for its disinfecting and sterilizing properties.