Verbal Reasoning - Mental Ability Questions

Identify the diagram that best represents the relationship among the given classes.

Environment, Nitrogen, Oxygen, Weather

If Q means 'add to', J means 'multiply by', T means 'substract from' and K means 'divide by' then 30 K 2 Q 3 J 6 T 5 = ? 

Early morning after sunrise, Karthik was standing infront of his house in such a way that his shadow was falling exactly behind him. He starts walking straight and walks 5 metres. He turns to his left and walks 3 metres and again turning to his left walks 2 metres. Now in which direction is he from his starting point?

In a certain code language, 'how can you go' is written as 'ja da ka pa', 'can you come here' is written as 'na ka sa ja' and 'cone and go' is written as 'ra pa sa'. How is 'here' written in that code ?

Library is to Book as Book is to

In a certain code 'Black' means Orange', 'Orange' means Violet','Violet' means 'Green', 'Green' means 'White' ,'White', means 'Yellow' and 'Yellow' means 'Sky blue', what is the colour of coal ?

Derepak is brother of Ravi. Rekha is sister of Atul. Ravi is son of Rekha. How is Deepak related to Rekha ? 

If NAMO = 172 and OM = 56  then, SHIVAY = ?