Good Riddles

Question: rita's father's name is raghu. raghu is the ________ of rita's father.

Question: What looks the same like half an apple?

Question: what is a bud inside the house and flower outside the house

Question: Without me you will not live. Without me you will not love. Without me you have no courage,what am i?

Question: Although I am important to you, I am but a mere illusion. My beginning is as unknown as my conclusion. The more that you think, the more that I appear to pass. When you are in pleasure, I tend to escape your grasp. What am I?