I have teeth but i don't bite. Who Am I ?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

What will you call your mother's brother's brother-in-law?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What is so fragile that saying its name breaks it?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?