In the following question , a series is given with one terms missing . Choose the correct alternative from the given ones that will complete the series :

ABC , DEF , HIJ , ? 

How many such pairs of letters are there in the word MEDIOCRE each of which has as many letters between them in the English alphabet series? 

Find the missing term of sequence.
AB, BA, ABC, CBA, ABCD, ____

How many pair of letters are there in the word “BEAUTIFUL” which has as many letters (in both forward and backward direction) between them as they have in English alphabet series?

Arrange the given words in the sequence in which they occur in the dictionary.
i. Accuse
ii. Accustom
iii. Accumulation
iv. Accompany

Choose the correct alternative from the given ones that will complete the given sequence.
ALN, DNP, GPR, ?

A series is given below. In which a letter pair is not given. Choose the correct alternative from the given ones that will complete the series.
ML, RQ, WV, BA ?

What will come at the place ___ ?In the given series? 
 BZA, DYC, FXE, ?, JVI