How many meaningful English words can be made with the letters $ENAL$ using each letter only once in each word?

If all the letters in the word $MERCIFUL$ are rearranged in alphabetical order and substituted by the alphabet preceding them in the English alphabet,what will be the new arrangement of letters?

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 alphabets were written in the reverse order,which will be the fifth letter to the left of the ninth letter from the right?

Select the series in which the letters do not follow a general rule.

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

The letters of the word $NUMKIPP$ are in disorder. If they are arranged in proper order,the name of a vegetable is formed. What is the last letter of the word so formed?