What does below chemistry rebus means?

Can you replace the question mark with the correct number?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Who can jump higher than a Mountain?

Buy me, smell me or deliver me, I do not change.

Who am I?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

What is the coolest letter in the alphabet?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.