Verbal Reasoning - Mental Ability Questions

In a certain code language, “LUNGS” is written as “OWQIV”. How is “HEART” written in that code language?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
A, E, J, N, S, W, ?

14 notebooks of a class were corrected with ink pen while 22 notebooks were corrected with colour pencil. If 4 notebooks were corrected with both, what is the strength of class?

What should come in place of the question mark (?) in the following number series? 1, 3, 24, 360,8640, 302400, ?

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

9 ÷ 16 - 25 + 10 x 20 = ?

Choose the related word/letters/number from the given alternatives.
AF : BE : : ? : DH

If 12 (20) 16 and 21 (35) 28, then what is value of A in 48 (80) A ?

Johnny's father is the brother­in­law of Nisha's only sister. How is Johnny related to Nisha?