Take one out and scratch my head, I am now black but once was red. What am I?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

A father's child, a mother's child, yet no one's son.

Who am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

I shave every day, but my beard stays the same. What am I?