Verbal Reasoning - Mental Ability Questions

Wax : Grease :: Milk : ?

Study the diagram given below and answer the questions based on it.

∆ represents Persons who like Reading

○ represents Persons who like Cycling 

□ represents Persons who like Trekking

How many persons like reading?

Which of the following Venn diagrams correctly represents the following classes

Eagle, bird, cat

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

Computer hardware, Monitor, Keyboard, Operating system

1)

If the last four letters of the word 'CONCENTRATION' are written in reverse order followed by next two in the reverse order and next three in the reverse order and then followed by the first four in the reverse order, counting from the end, which letter would be eighth in the new arrangement ?

_ tu _ rt _ s _ _ usrtu _

When I went back to my hometown three years ago, I found that a lot of changes ______.

The following question consist of two words each that have a certain relationship to each other, followed by lettered pairs of words . Select the lettered pair that has the same relationship as the original pair of words. 

Proscenium : Stage