Verbal Reasoning - Mental Ability 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 letter of the given word.

IMPRACTICABLE

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

_n_p_no_m_ _p

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
19, 29, 40, 44, ?

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

4, 9, 16, 25, 36, ?

In a row, there are 12 professors between Akash and Bhumi and Akash being the first professor in the row. There are 6 professors between Bhumi and Charu. If there are 15 professors after Charu, then how many minimum professors are there in the row?

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

CL,HQ,MV,?

In the following series, one letter is missing as shown by the question mark(?). Select the missing letter from the given options.

I, L, O, R, ?