Which one will raisins soak-up the most of tap-water salt-water or vegetable oil?

Answer 1

Raisins will absorb the most water when soaked in tap water. This is because they are hydrophilic and will rehydrate by drawing in moisture from the water. In salt water, the presence of salt creates a hypertonic environment, which can actually cause the raisins to lose water. Vegetable oil, being non-polar, does not interact well with the hydrophilic nature of raisins, leading to minimal absorption.