ANSWER : Weight

EXPLANATION : . All other terms signify human behavioural patterns and are related to the concept of personality.

ANSWER : FR

EXPLANATION : . In all other pairs of words first and second letters are equidistant from the beginning and end respectively in the alphabetical series.

ANSWER : 5 : 14

EXPLANATION : . First number is one more than the half of the second number.

ANSWER : JR

EXPLANATION : . In all other pairs of letters first and second letters are equidistant from the beginning and end in alphabetical series.

ANSWER : 518 : 816

EXPLANATION : . Second number is the reverse of the first number