Find the odd word/letter/number from the given alternatives.

Coal : Heat : : Wax : ? 

A man walks 10 km in north and turns right and walks 20 km. A gain he turns right and walks 50 km if he is 20 km west from the initial point. Now find that distance how much he walk from initial point. 

Sumit walks 20 m. to the East from point 'A', Then walks 20 m. in South-West direction. Then walks 20 m in North-West direction and reaches at point B. Find distance b/w A and B.? 

Sushant said, "This girl is the wife of the grandson of my mother." who is Sushant to the girl? 

In a certain code language, CRY is written as MRYC, How is GET written in that language?

Select the odd word/ letters/ number/ number pair from the given alternative.
(A) 1728
(B) 4096
(C) 5832
(D) 2746

Which of the following interchanges in signs and numbers will make the given equation correct?

8 x 6 + 4 = 52