Spray dryer for evaporating milk to produce milk powder is made of_________________?
Correct answer: B. Stainless steel
- A. Lead lined steel
- B. Stainless steel
- C. Aluminium
- D. Cast iron
Explanation
Stainless steel is non-porous, corrosion-resistant and easy to clean, making it suitable for hygienic milk-processing equipment. Carbon steel and cast iron can rust or contaminate the product, while aluminium is less commonly selected for the hot, wet spray-drying environment.
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