Arrange the given words in alphabetical order and choose the one that comes in the middle.

If the first and third letters in the word $NECESSARY$ were interchanged,also the fourth and the sixth letters,and the seventh and the ninth letters,which of the following would be the seventh letter from the left?

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

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
In the given alphabet,starting from the fifth letter from the left,if twelve letters are written in reverse order,then which letter will be the seventh to the left of the fourteenth letter from the right?

If each vowel of the word $WEBPAGE$ is substituted with the next letter of the English alphabet,and each consonant is substituted with the letter preceding it,which of the following letters will appear thrice?

$A$ 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 that combination of numbers so that the letters arranged accordingly form a meaningful word.
$R, T, A, O, U, H$
$1, 2, 3, 4, 5, 6$