Verbal Reasoning - Mental Ability Questions

Select the odd word from the given alternatives

Select the related word/letters/number from the given alternatives.
APPARENT : RENTAPPA : : MUSCULAR : ?

Pond is related to Water in the same way as Mountain is related to

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series.
Oxygen, Toil, Arouse, Arson, Tenuous, ?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.

17 x 18 ÷ 30 - 20 + 14 = ?

If in a code language 3456 = ROPE and 15526 = APPLE then 54613 = ?

Pointing towards a lady in a photograph, Sushma says, "She is the mother of my grandfather's son". How is Sushma related to the lady in the picture?

Select the related word/letters/number from the given alternatives.
EFGH: LNPR : : ABCD : ?