How many such letter-pairs are there in the word 'PERFUMERY' which have as many letters between them in the word as there are, in the English alphabet between the same letters in sequence?

If it is possible to make a meaningful word from first, fifth, seventh and eleventh letters of the word ECCENTRICITY then which will be the third letter of that word? If it is possible to make more than one word, then answer will be M, and if the word formation is not possible, then the answer will be X.

If it is possible to make a meaningful word from first, second, fourth and fifth letters of the word FALSEHOOD then which will be the third letter from right? Give your answer M if more than one word can be formed and if no word can be formed then give your answer X.