Is iodine give positive test for skim milk?

Iodine does not give a positive test for skim milk. Instead, iodine is typically used to test for the presence of starch, which is not found in significant amounts in skim milk. If iodine is added to skim milk, it would not change color, indicating that starch is absent. Therefore, the iodine test is not applicable for detecting components in skim milk.