How many such pairs of letters are there in the word $KNIGHT$,each of which has as many letters between them in the word as they have in the English alphabet?

How many meaningful words can be made from the letters $AEHT$,using each letter only once?

$A$ 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.
$N, R, O, C, T, A$
$1, 2, 3, 4, 5, 6$

If the first and second letters in the word $DEPRESSION$ were interchanged,also the third and the fourth letters,the fifth and the sixth letters and so on,which of the following would be the seventh letter from the right?

Arrange the given words in alphabetical order and choose the one that comes first.
Qualify,Quarry,Quaver,Quarter,Quarrel

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
If the above alphabet is divided into two equal halves $-$ from $A$ to $M$ and $N$ to $Z,$ which letter in the latter half would correspond to the letter $J?$