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 written in the reverse order,which will be the eighth letter to the right of $O$?

$A$ 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.
$N, A, E, H, L, D$
$1, 2, 3, 4, 5, 6$

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

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

Arrange the given words in the sequence in which they occur in the dictionary and then choose the correct sequence.
$1.$ Spruce $\,2.$ Spume $\,3.$ Spree $\,4.$ Spur $\,5.$ Sprawl

If you pick up from the following alphabet,the sixth and the fourteenth letters from your right and then pick up the fifth and twentieth letters from your left and form a meaningful word,what is the first letter of that word?
$A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z$