Keyboard words are not in alphabetical order, Why?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

Count the Triangle in the figure given below:

What goes up but never comes down?

What kind of band never plays music?

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

Why Aeroplane windows are round?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

The centre of the third figure is empty. What digit should fit inside?