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.

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

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

How can you take 2 from 5 and leave 4?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

I am the fastest animal but cannot climb the tree. What am I?

I have an eye but still cannot see.

Who am I?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?