If you say my name, I will no longer exist. What am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

Before Mount Everest was discovered, what was the highest mountain in the world?

How many times can you subtract the number two from the number fifty?

Give it food and it will live; give it water and it will die.

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?