Choose or find odd pair of words - (Aphid : Paper) , (Moth : Wool) , (Termite : Wood) , (Locust : Plant)

A. APHID : PAPER

If it is possible to make a meaningful word with the second, the fifth and the eighth letters of the word 'CARETAKER', which of the following will be the first letter of that word ? If no such word can be made, give X as the answer. If more than one such word can be made, give M as the answer.

E. M

In following questions, one term in number series is incorrect. - Find out the incorrect number 121, 143, 165, 186, 209

C. 186

The following question 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 Which letter will be the sixth to the right of the eleventh letter from the right end of the alphabet ?

B. V