Spot what is wrong here in below Picture?

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?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is the end of everything?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?