Verbal Reasoning - Mental Ability Questions

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, ?

Select the odd word from the given alternatives

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

If 2*10 = 6, 14*16 = 15 and 4*16 = 10, then find the value of 16*8 = ?

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 = ?

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?

A and B start running from the same point. A runs 3 km West, then turns South and runs 5 km, then turns to her right and runs 7 km. B runs 1 km South then turns to her right and runs 10 km. Where is B with respect to A now?

In the given series is written in the reverse order, then what will be the 5th term to the left of the 10th term from right end?

R+JM2$#QR?*O@7F3