Blood Relations Test Preparation

In this test, the success of a candidate depends upon his/her knowledge of blood relations, some of which are summarized below to help solve these tests.

🌟 Important Note: A relation on the mother’s side is called ‘maternal’ while that on the father’s side is called ‘paternal’. Thus, mother’s brother is ‘maternal uncle’ while father’s brother is ‘paternal uncle’.

Key Blood Relations

Relation Term Example
Mother’s or father’s son Brother Your brother
Mother’s or father’s daughter Sister Your sister
Mother’s or father’s brother Uncle Your uncle
Mother’s or father’s sister Aunt Your aunt
Mother’s or father’s father Grandfather Your grandfather
Mother’s or father’s mother Grandmother Your grandmother
Son’s wife Daughter-in-law Your son’s wife
Daughter’s husband Son-in-law Your daughter’s husband
Husband’s or wife’s sister Sister-in-law Your spouse’s sister
Husband’s or wife’s brother Brother-in-law Your spouse’s brother
Brother’s son Nephew Your brother’s son
Brother’s daughter Niece Your brother’s daughter
Uncle or aunt’s son or daughter Cousin Your uncle’s child
Sister’s husband Brother-in-law Your sister’s husband
Brother’s wife Sister-in-law Your brother’s wife
Grandson’s or Grand daughter’s daughter Great granddaughter Your granddaughter’s daughter

Practice Exercise – Blood Relations

Questions 1-10

1
A is father of B, But B is not A’s daughter. Establish relationship of B with A?
A Son
B Nephew
C Daughter
D None of these
Solution:

Answer: (a) Son

If B is not A’s daughter, then B must be A’s son. Father-son relationship.

2
Waleed’s mother is sister of Imran’s brother. What is Waleed to Imran?
A Nephew
B Uncle
C Father
D Brother-in-law
Solution:

Answer: (a) Nephew

Waleed’s mother is sister of Imran as well. So, Waleed is nephew to Imran.

3
My mother is sister of your brother. What relation am I to you?
A Cousin
B Nephew
C Brother
D Uncle
Solution:

Answer: (b) Nephew

I to mother’s sister = Nephew. Since your brother is my mother’s brother, you are my mother’s sibling’s child, making you my cousin? Wait, let’s think: My mother is sister of your brother → Your brother is my uncle → You are my uncle’s sibling → Actually, I am your nephew.

Questions 11-20

11
Pointing towards a boy, Maria said, “He is the son of only son of my grandfather”. How is that boy related to Maria?
A Uncle
B Brother
C Cousin
D Data Inadequate
Solution:

Answer: (b) Brother

Only Son of grandfather = Father; Son of father = brother. So, the boy is Maria’s brother.

Questions 36-40 (Group)

Scenario: There are six persons A, B, C, D, E and F. C is the sister of F. B is the brother of E’s husband. D is the father of A and grandfather of F. There are two fathers, three brothers and a mother in the group.
36
Who is the mother?
A A
B B
C D
D E
Solution:

Answer: (d) E

D is father of A and grandfather of F. So, A is father of F. C is sister of F. So, C is daughter of A. Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F.