The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

What is next number in the pattern below:

131 517 192 123 ?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

I have an eye but still cannot see.

Who am I?

Why Aeroplane windows are round?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?