I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. 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.

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

What is more useful when it is broken?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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

What you cannot hold but it is yours?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

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

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?