Which alphabet letter is a question?

What does this rebus mean?

O
N
C
E
TIME

10+10 and 11+11 can give you the same answer.

Explain how?

What is the longest word in the dictionary?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?