In the following question find out the missing number?

Find the odd word from the given figure?

The question below is based on the given diagram. The diagram shows three figures each representing scientists, Government employees and employees of Company X.

Which of the following represents all such Scientists who are Government employees but are not employed in Company X?

Four different positions of a dice are as shown below. What number is opposite to face 3?

Direction: In the following, select the related word from the given alternatives.
Heat : Convection :: Space : ?

A square transparent sheet with pattern is given. Figure out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the middle line shown.

Which one will replace the question mark?