Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

A father's child, a mother's child, yet no one's son.

Who am I?

What Adam and Eve do not have but the rest of the people have?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

What has hands, but can’t clap?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

A man escapes from jail using help from his girlfriend. The investigators suspect four girls of being the man's girlfriend.

Out of those four girls, one is his girlfriend who is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend lie. Following are the statements from all four of them:

Ariana: "Myrna is his girlfriend."
Jane: "Angelina is lying."
Angelina: "Ariana is lying."
Myrna: "Jane is not his sister."

Can you find out who is the man's sister among them?