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

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

Number of letters skipped in between the adjacent letters in the series are consecutive even numbers. Which of the following series observes this rule?

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

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

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 first ten letters of the given alphabet are written in the reverse order,which of the following letters will be the seventh to the left of the twelfth letter from the right end?