Verbal Reasoning - Mental Ability Questions

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Responsibility

Introducing a girl, a man says, "She is the daughter of my father's daughter". How is the girl related to the man?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

R, M, I, F, D, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

BM, FQ, JU, ?, RC

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
FU, LO, RI, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

GHXT, JKUQ, MNRN, PQOK, ?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

AbC, dEfG, hIjKl, MnOpQr, ?

The weights of 4 boxes are 30, 70, 60 and 90 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?