What does this rebus mean?

O
N
C
E
TIME

If an electric train is travelling south, then which way is the smoke going?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

What is the centre of gravity?

What is the word or phrase below?
R | E | A | D

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

what does this picture(rebus) riddle means ?

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?