Cadmium pollution causes a disease called

If 44 @ 13 = 58 and 34 @ 27 = 78, then 25 @ 33 = '?'.

Select the option in which the words share the same relationship as the pair below.

Brave : Courageous

Select the option that is related to the third word in the same way as the second word is related to the first word.

Expand: Enlarge :: Condense: ?

Select the option that is related to the third word in the same way as the second word is related to the first word.

 Choose another pair of words with the same relationship as the one given below.

Wasp: Sting::  Dog:?

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.