Logical Sequence of Words Questions

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Superconductors

From the given alternative words, select the word which cannot be formed using the letters of the given word:

ANNOUNCEMENTS

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

Grandfather

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Representation

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

? , Hexane, Heptane, Octane

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
ABSOLUTE

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

? , Planning, Strategy, Marketing, Finance

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

Commensurate