Which of the following statements are true?
1. Foods high in sugar and other solutes dry more slowly. 2. As drying progresses the concentration of solutes in water increases causing the drying rate to slow. 3. Water that is most difficult to remove is that is chemically bound in the form of hydrates. 4.Drying at high pressure occurs at lower temperature.

Correct option is B

· Statement 1 is true: High sugar content binds water, making evaporation slower.
· Statement 2 is true: As drying continues, solute concentration increases, slowing down further drying.
· Statement 3 is true: Chemically bound water (e.g., in hydrates) is most difficult to remove.
· Statement 4 is false: Drying at low pressure occurs at lower temperatures (used in freeze-drying), not high pressure.
Hence, statements 1, 2, and 3 are correct.