Question

Preliminary unit operation in any food industry includes __________

(a) cleaning, sorting

(b) cleaning, drying

(c) grading, drying

(d) sorting, drying

This question was posed to me by my school teacher while I was bunking the class.

Question is from Basic Principles of Food Process Engineering in chapter Introduction & Unit Systems of Food Processing Unit Operations

Answer 1

Right option is (a) cleaning, sorting

For explanation: Cleaning means the removal of foreign materials from the desired products. This can be accompanied by washing, screening, hand picking. Grading and sorting refers to separation of cleaned product into various fractions based on commercial values. Drying is only done after the cleaning and grading of the product.