What has to be broken before you can use it?

What word begins and ends with an E, but has only one letter?

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

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

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

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

What is the riddle which can be asked all day with a different correct answer each time.

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.

I am white when I am dirty, and black when I am clean. What am I?