What has one letter and starts with an E?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

What is the Surname of Barbie Doll?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?