What am I?

Question: I am full of light but left in the dark. I have a temper that pushes my single sibling. I have many friends very far away and I disappear in the light when it is my sibling's turn to push me back. What am I?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What asks but never answers?

Question: A vivid reality, a naked morality, a place where wishes come true.

Question: I'm written with two letters, said with one and seen with two.What am I?