Concept:
Detergents are essential for cleaning dairy equipment and must have specific properties.
Step 1: Required properties.
• Wetting → penetrate dirt
• Emulsifying → remove fats
• Saponifying → convert fats into soluble form
Step 2: Additional requirement.
• Should be safe for workers
• Mild on skin and germicidal
Step 3: Incorrect property.
• Slow solubility is undesirable → should dissolve quickly
Conclusion: A, B, C, E correct.