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 get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

The dirtier I get, the whiter I look. Who am I?

What you cannot hold but it is yours?

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

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

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

Explain?

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

What Am I?