What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I can write cow in 13 letters.

Can You?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

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 have eight fingers and two thumbs but I do not live. What Am I?

what one word does the below rebus identifies?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?