Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
CFE, ILK, ORQ, ?

Aman is 4 years older to Bimal. Bimal is 2 years younger to Chaman. Chaman is 6 years older to Dhruv. Dhruv is 9 years younger to Esha. Who is the second eldest?

A points to B and says to a lady C "His mother is the only daughter of your father". If so, how is C related to B?

If SQUALOR is coded as USWCNQT, then how will WHY be coded as?

Select the related word/letters/number from the given alternatives.
Donkey : Brays :: Monkey : ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

IB,QD,XH,DP,?

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series.

hello, lower, error, organ, tense, ?

If SELFIE = LXEYBX, then PHYSICS = ____