1- Yes the one who has made the intention asks the scholar for a Kheera and the scholar is inspired to know what his intention is without the person telling him.
2- Normally is a Kheera is done when a person is unable to make a decision or “tie a camel.” A person researches and makes the effort, but sometimes he is still stuck and hesitant. In these cases a person takes a kheera.
3- The Kheera of a pious person is more likely to come out as being accurate and effective.