Verbal Reasoning - Mental Ability Questions

Pointing to an old man, Kailash said, "His son is my son's uncle." How is the old man related to Kailash ? 

Select the related number from the given alternatives.

10001 : 10101 :: 101 : ?

Select the related word from the given alternatives.

Swim : Water :: Fly : ?

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

Lion : Den : : ? : ?

Select the related word/letters/number from the given alternatives.

BCD : DEG : : FIJ : ?

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

ZYXYXYXY, XWXYXYXY, XYZYXYXY, XYXWXYXY, XYXYZYXY, ______.

Select the related word/letters/number from the given alternatives.

EF : JA : : NO : ?

Arrange the given words in the sequence in which they occur in the dictionary.

i. Speaker
ii. Surreptitious
iii. Spontaneous
iv. Spurious