What is so fragile that saying its name breaks it?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What question can you never answer yes to?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What type of tree can I carry in my hand?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

What is full of holes but still holds water?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.