Verbal Reasoning - Mental Ability Questions

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?

If Deplete : Exhaust then Replenish : ___

In the following question, select the related number pair from the given alternatives.
534 : 2 : : ? : ?

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Catrophobia

A travels 12 km towards north and then takes a left turn and covers another 5 km. From there, he turns 180° anticlockwise and travels 10 km further. What is the minimum distance between his initial and final position?

Select the related word/letters/number from the given alternatives.
DB: IC:: YE: ?

A woman pointing to a man said, "He is the widower of my uncle's brother's daughter." How is the man related to the woman?

Identify the diagram that best represents the relationship among the given classes.
Football, Volleyball, Outdoor Games, Carrom.