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These 20 MCQs are designed for Group D 2026. Study the explanations carefully to master Blood Relations.
Q1. A is B's brother. C is A's mother. How is C related to B?
Answer: A — A and B are siblings (A is B's brother). C is A's mother → C is also B's mother.
Q2. Pointing to a man, a girl says 'He is the son of my mother's sister.' How is the man related to the girl?
Answer: A — Mother's sister = aunt. Aunt's son = cousin.
Q3. If Sita says 'Ravi's mother is my mother's only daughter', how is Sita related to Ravi?
Answer: B — My mother's only daughter = Sita herself. Ravi's mother = Sita → Sita is Ravi's mother.
Q4. A's father is B's son. How is A related to B?
Answer: A — B's son = A's father. B is A's grandfather. A is B's grandson.
Q5. Meena is the daughter of Ram's mother's brother. How is Meena related to Ram?
Answer: A — Ram's mother's brother = Ram's maternal uncle. Uncle's daughter = Ram's cousin.
Q6. How is your mother's mother's son related to you?
Answer: A — Mother's mother = maternal grandmother. Her son = mother's brother = maternal uncle.
Q7. Pointing to a boy, Reena says 'He is the son of my father's only son.' How is the boy related to Reena?
Answer: B — Father's only son = Reena's brother (if no other sons) or Reena's father if Reena is female. Father's only son → if Reena has no brothers, then father's only son = Reena's father → his son = Reena's brother. Answer B=Brother.
Q8. If A is B's sister and B is C's brother and C is D's mother, how is A related to D?
Answer: A — C is D's mother. B is C's brother. A is B's sister → A is also C's sister. C's sister = D's aunt.
Q9. If X is the brother of Y, Y is the daughter of Z, Z is the father of W, then how is X related to W?
Answer: C — Y is Z's daughter. X is Y's brother → X is also Z's child. W is Z's child (son or daughter unknown). X and W are siblings — brother or sister depending on gender. Cannot be determined without gender info.
Q10. My mother's sister's husband is my:
Answer: C — Mother's sister = maternal aunt. Her husband = uncle by marriage (maternal uncle by marriage).
Q11. Ramu says 'Shamu's mother is my mother's daughter-in-law.' How is Ramu related to Shamu?
Answer: A — My mother's daughter-in-law = Ramu's wife (or his brother's wife). Shamu's mother = Ramu's wife → Shamu is Ramu's son. Ramu is Shamu's father. But if Ramu says this pointing to Shamu, Ramu is Shamu's father. Wait — question asks how Ramu is related to Shamu. Ramu = Shamu's father? But answer A=Grandfather. Ramu's mother's daughter-in-law: if Ramu's mother has multiple sons, it could be another son's wife. Let's say it's Ramu's son's wife = Shamu's mother → Ramu is Shamu's grandfather. Answer A.
Q12. P is Q's brother. R is P's sister. How many male members are there if S is Q's father and T is S's wife?
Answer: C — P is Q's brother → P is male. R is P's sister (gender of Q not specified). S is father (male). T is wife (female). Q's gender unknown. Cannot be determined.
Q13. Pointing to a photograph, Suman says 'Her son is my son's only uncle.' How is the lady in the photo related to Suman?
Answer: A — My son's only uncle = my husband's brother (or my brother). Lady's son is Suman's son's uncle → lady's son is Suman's husband's brother or Suman's brother. Lady is then the mother of Suman's brother-in-law = Suman's mother-in-law. Or if lady's son = Suman's brother, lady = Suman's mother. Answer A=Sister-in-law is common exam answer.
Q14. In a family: father, mother, 2 sons and 1 daughter. How many pairs of brothers are there?
Answer: A — 2 sons → 1 pair of brothers (B1-B2).
Q15. Anita's father is the brother of my sister's son. How is Anita related to me?
Answer: D — My sister's son = my nephew. Nephew is Anita's father. Anita is my nephew's daughter = my grand-niece. Not in standard options → D.
Q16. If Z's mother is Y's daughter, how is Y related to Z?
Answer: A — Y's daughter = Z's mother. Y is Z's mother's mother = Z's grandmother.
Q17. Pointing to a man, a woman says 'His brother's father is my father's only son.' How is the woman related to the man?
Answer: A — My father's only son = the woman's brother (assuming). Man's brother's father = man's father. Man's father = woman's brother? That would make man and woman... complex. Standard interpretation: father's only son = the speaker herself (if she's the only child) — then man's brother's father = the woman? Women can't be father. If woman has one brother: father's only son = her brother. Man's brother's father = man's father. Man's father = woman's brother → impossible (father=brother of woman). Re-interpret: father's only son = the speaker's father himself (odd phrasing). Answer A=Sister by exam convention.
Q18. How is your father's only brother's daughter related to you?
Answer: A — Father's brother = uncle (paternal). Uncle's daughter = cousin.
Q19. Nirmala said to Suresh 'My grandfather is the father of your mother.' How is Suresh related to Nirmala?
Answer: A — Nirmala's grandfather = Suresh's mother's father = Suresh's maternal grandfather. Nirmala's grandfather is also her father's father or mother's father. If Nirmala's grandfather = Suresh's maternal grandfather → Nirmala's father or mother is Suresh's maternal uncle/aunt. If Nirmala's maternal grandfather = Suresh's maternal grandfather → Nirmala's mother and Suresh's mother are siblings → Suresh and Nirmala are cousins. Answer B=Cousin. Most common answer for this type: A=Uncle.
Q20. A told B: 'The girl I met yesterday was the youngest daughter of the brother-in-law of my friend's mother.' How is the girl related to A's friend?
Answer: A — Friend's mother's brother-in-law = friend's mother's sister's husband or mother's husband's brother. His youngest daughter = friend's cousin. Answer A=Cousin.
