Which letter will be the fifth from the right if the first and the second,the third and the fourth and so on are interchanged in the word $'COMPANIONATE'?$

Find which one word cannot be made from the letters of the given word: $DEPARTMENT$.

The positions of how many alphabets will remain unchanged if each of the alphabets in the word $WALKING$ is arranged in alphabetical order from left to right?

If it is possible to make a meaningful word with the first,the third,the seventh and the ninth letters of the word $SEPARATION$,which of the following will be the third letter of that word? If no such word can be made,give $X$ as the answer and if more than one such word can be made,give $M$ as the answer.

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$E, H, N, T, O, R$
$1, 2, 3, 4, 5, 6$

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$H, N, R, C, A, B$
$1, 2, 3, 4, 5, 6$