Practice 30 verified SSC CGL Blood Relations MCQs with answers, shortcuts, and detailed explanations. Master blood relation questions with confidence.
SSC CGL Blood Relations MCQs
1. Pointing to a man, Ravi said, “He is the son of my mother’s only son.” How is the man related to Ravi?
A) Brother B) Son
C) Nephew D) Father
Answer: B) Son
Explanation:
Ravi’s mother’s only son = Ravi himself.
The man is the son of Ravi.
Therefore, he is Ravi’s son.
2. A is the brother of B. B is the sister of C. How is A related to C?
A) Brother B) Sister
C) Father D) Uncle
Answer: A) Brother
Explanation:
A and B are siblings.
B and C are also siblings. Therefore, A and C are siblings. Since A is male, A is C’s brother.
3. P is the father of Q. Q is the mother of R. How is P related to R?
A) Father B) Uncle
C) Grandfather D) Brother
Answer: C) Grandfather
Explanation:
P → father of Q.
Q → mother of R.
Therefore, P is the maternal grandfather of R.
4. S is the daughter of T. T is the son of U. How is U related to S?
A) Father B) Grandfather
C) Uncle D) Brother
Answer: B) Grandfather
Explanation:
T is U’s son.
S is T’s daughter.
Therefore, U is S’s grandfather.
5. Pointing to a woman, Arun said, “She is the daughter of my father’s only daughter.” How is the woman related to Arun?
A) Sister B) Daughter
C) Niece D) Mother
Answer: C) Niece
Explanation:
Arun’s father’s only daughter = Arun’s sister.
The woman is the daughter of Arun’s sister.
Therefore, she is Arun’s niece.
SSC CGL Blood Relations MCQs
6. M is the mother of N. N is the brother of O. How is M related to O?
A) Sister B) Mother
C) Aunt D) Grandmother
Answer: B) Mother
Explanation:
M is N’s mother.
N and O are siblings. Therefore, M is also O’s mother.
7. X is the sister of Y. Y is the father of Z. How is X related to Z?
A) Mother B) Sister
C) Aunt D) Grandmother
Answer: C) Aunt
Explanation:
Y is Z’s father.
X is Y’s sister.
Therefore, X is Z’s paternal aunt.
8. A is the daughter of B. C is the husband of B. How is C related to A?
A) Brother B) Father
C) Uncle D) Grandfather
Answer: B) Father
Explanation:
A is B’s daughter.
C is B’s husband. Therefore, C is A’s father.
9. D is the son of E. F is the daughter of D. How is E related to F?
A) Father B) Uncle
C) Grandfather/Grandmother D) Brother
Answer: C) Grandfather/Grandmother
Explanation:
D is E’s son.
F is D’s daughter.
Therefore, E is F’s grandparent. Since E’s gender is not specified, the exact relation cannot be narrowed to grandfather or grandmother.
10. Pointing to a boy, Neha said, “He is the son of my mother’s daughter.” If Neha has no sister, how is the boy related to Neha?
A) Brother B) Son
C) Nephew D) Cousin
Answer: B) Son
Explanation:
Neha’s mother’s daughter = Neha herself because she has no sister.
The boy is Neha’s son.
Therefore, the answer is Son.
SSC CGL Blood Relations MCQs
11. R is the brother of S. S is the mother of T. How is R related to T?
A) Father B) Uncle
C) Brother D) Grandfather
Answer: B) Uncle
Explanation:
S is T’s mother.
R is S’s brother.
Therefore, R is T’s maternal uncle.
12. K is the father of L. L is the sister of M. How is K related to M?
A) Uncle B) Father
C) Brother D) Grandfather
Answer: B) Father
Explanation:
K is L’s father.
L and M are siblings. Therefore, K is also M’s father.
13. A is the brother of B. B is the mother of C. How is A related to C?
A) Father B) Uncle
C) Brother D) Grandfather
Answer: B) Uncle
Explanation:
B is C’s mother.
A is B’s brother.
Therefore, A is C’s maternal uncle.
14. P is the daughter of Q. R is the son of P. How is Q related to R?
A) Uncle B) Father
C) Grandfather/Grandmother D) Brother
Answer: C) Grandfather/Grandmother
Explanation:
P is Q’s daughter.
R is P’s son.
Therefore, Q is R’s grandparent. Q’s gender is not given, so both possibilities exist.
15. Pointing to a girl, Mohan said, “She is the daughter of the only daughter of my father.” How is the girl related to Mohan?
A) Daughter B) Sister
C) Niece D) Mother
Answer: C) Niece
Explanation:
The only daughter of Mohan’s father = Mohan’s sister.
The girl is the daughter of Mohan’s sister.
Therefore, she is Mohan’s niece.
16. T is the wife of U. U is the brother of V. How is T related to V?
A) Sister B) Sister-in-law
C) Mother D) Aunt
Answer: B) Sister-in-law
Explanation:
U and V are siblings.
T is U’s wife.
Therefore, T is V’s sister-in-law.
SSC CGL Blood Relations MCQs
17. A is the husband of B. B is the sister of C. How is A related to C?
A) Brother B) Brother-in-law
C) Father D) Uncle
Answer: B) Brother-in-law
Explanation:
B and C are siblings.
A is B’s husband.
Therefore, A is C’s brother-in-law.
18. P is the sister of Q. Q is the husband of R. How is P related to R?
A) Sister-in-law B) Mother
C) Daughter D) Aunt
Answer: A) Sister-in-law
Explanation:
Q is R’s husband.
P is Q’s sister.
Therefore, P is R’s sister-in-law.
19. A is the mother of B. B is the father of C. How is A related to C?
A) Aunt B) Mother
C) Grandmother D) Sister
Answer: C) Grandmother
Explanation:
A is B’s mother.
B is C’s father.
Therefore, A is C’s grandmother.
20. X is the son of Y. Y is the daughter of Z. How is Z related to X?
A) Father/Mother B) Grandfather/Grandmother
C) Uncle/Aunt D) Brother/Sister
Answer: B) Grandfather/Grandmother
Explanation:
Y is Z’s daughter.
X is Y’s son.
Therefore, Z is X’s grandparent.
21. Pointing to a man, Priya said, “His mother is the only daughter of my mother.” How is the man related to Priya?
A) Brother B) Son
C) Nephew D) Father
Answer: B) Son
Explanation:
The only daughter of Priya’s mother = Priya herself.
The man’s mother is Priya.
Therefore, the man is Priya’s son.
22. Pointing to a woman, Rahul said, “Her brother is the only son of my father.” How is the woman related to Rahul?
A) Mother B) Sister
C) Daughter D) Aunt
Answer: B) Sister
Explanation:
Rahul’s father’s only son = Rahul himself.
The woman’s brother is Rahul.
Therefore, the woman is Rahul’s sister.
23. A is the mother of B. C is the father of A. D is the brother of B. How is C related to D?
A) Father B) Grandfather
C) Uncle D) Brother
Answer: B) Grandfather
Explanation:
A is D’s mother because D is B’s brother.
C is A’s father.
Therefore, C is D’s maternal grandfather.
24. P is the father of Q. R is the wife of P. S is the daughter of Q. How is R related to S?
A) Aunt B) Mother
C) Grandmother D) Sister
Answer: C) Grandmother
Explanation:
P is Q’s father.
R is P’s wife, so R is Q’s mother.
S is Q’s daughter.
Therefore, R is S’s grandmother.
25. A is the sister of B. B is the father of C. C is the brother of D. How is A related to D?
A) Mother B) Aunt
C) Sister D) Grandmother
Answer: B) Aunt
Explanation:
B is D’s father because C and D are siblings and B is C’s father.
A is B’s sister.
Therefore, A is D’s aunt.
26. M is the son of N. O is the daughter of N. P is the son of O. How is M related to P?
A) Father B) Uncle
C) Brother D) Grandfather
Answer: B) Uncle
Explanation:
M and O are children of N, so they are siblings.
O is P’s mother.
M is O’s brother.
Therefore, M is P’s maternal uncle.
SSC CGL Blood Relations MCQs
27. A is the daughter of B. B is the brother of C. C is the mother of D. How is A related to D?
A) Sister B) Cousin
C) Aunt D) Mother
Answer: B) Cousin
Explanation:
B and C are siblings.
A is B’s daughter.
D is C’s daughter.
The children of siblings are cousins. Therefore, A and D are cousins.
28. P is the brother of Q. Q is the mother of R. S is the father of P. How is S related to R?
A) Father B) Uncle
C) Grandfather D) Brother
Answer: C) Grandfather
Explanation:
Q is R’s mother.
P is Q’s brother.
S is P’s father. Since P and Q are siblings, S is also Q’s father.
Therefore, S is R’s grandfather.
29. A is the husband of B. C is the daughter of A and B. D is the brother of A. How is D related to C?
A) Maternal uncle B) Paternal uncle C) Grandfather D) Brother
Answer: B) Paternal uncle
Explanation:
A is C’s father.
D is A’s brother.
Therefore, D is C’s paternal uncle.
30. Pointing to a photograph, Sita said, “The person in the photograph is the son of the only son of my grandfather.” How is the person related to Sita?
A) Brother B) Father
C) Cousin D) Uncle
Answer: C) Cousin
Explanation:
The only son of Sita’s grandfather = Sita’s father, assuming the grandfather has only one son.
The person is the son of Sita’s father.
That person is Sita’s brother, not her cousin.
SSC CGL Blood Relations MCQs
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