Can you identify the hidden rebus in the image below?

What's a single-digit number with no value?

I am quite hot but become too cold if you remove the first two letters. What am I?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Which alphabet is a part of our body?

During which month do people sleep the least?

I have feet, but no legs. Which animal Am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?