What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

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

Which letter of the alphabet has the most water?

When we see 2 but call 10?

what's the probability of getting a king or a queen from a pack of 52 cards?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

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

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _