Keyboard words are not in alphabetical order, Why?

They are three errirs in this question. Can you find them?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

There is a place where if I stand up straight, I will still be considered sideways.

What work can one never finish?

During which month do people sleep the least?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

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?

Our product and our sum always give the same answer. Who are we?