What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

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

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What you cannot hold but it is yours?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Which is the correct shadow of the bird?

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

I’m tall when I’m young, and I’m short when I’m old. What am I?