Verbal Reasoning - Mental Ability Questions

In the following question, select the related word pair from the given alternatives.

Flag : Nation : : ? : ?

In the following question, select the related number pair from the given alternatives.

16 : 21 : : ? : ?

In the following question, select the related letter/letters from the given alternatives.

DFG : EGH : : PRS : ?

In the following question, select the related letter/letters from the given alternatives.

ACD : ZXW : : PMN : ?

In the following question, select the related letter/letters from the given alternatives.

BCE : IJL : : CDF : ?

Which of the following terms follows the trend of the given list?

QPPPPPP, QQPPPPP, QQQPPPP, QQQQPPP, QQQQQPP, _______________.

In the following question, select the related letter/letters from the given alternatives.

DFI : IKN : : NPS : ?

In the following question, select the missing number from the given series.

12, 17, 34, ?, 78, 83, 166