Choose or find odd pair of words - (Army : General) , (Team : Captain) , (Crache : Infant) , (Meeting : Chairman)

C. CRACHE : INFANT

In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
P T ?
O Q S
M N R

D. U

In following questions, one term in number series is incorrect. - Find out the incorrect number 2, 5, 10, 17, 26, 37, 50, 64

D. 64

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - c _ bbb _ _ abbbb _ abbb _

B. ABCCB

In each of the following questions, find which one word cannot be made from the letters of the given word. CONSTITUTIONAL

C. TALENT