Blood Relations PYQs for UPSC (2011-2024) | Solved Questions & PDF Download

Master Blood Relations for UPSC with solved Previous Year Questions (PYQs) from 2011 to 2024. This page provides detailed solutions, practice questions, and a free downloadable PDF to help you ace your UPSC preparation.

Overview of Blood Relations

Blood Relations is a critical topic in the UPSC exam, especially for the CSAT (Civil Services Aptitude Test) paper. It tests your ability to understand and interpret family relationships, hierarchies, and connections. Key concepts include:

  • · Family Trees
  • · Relationships (Parent, Sibling, Cousin, etc.)
  • · Generational Hierarchies
  • · Complex Relationship Puzzles

Practicing PYQs helps you understand the exam pattern, difficulty level, and frequently asked questions. Let’s dive into the year-wise questions!

Year-Wise Blood Relations PYQs (2011-2024)

Q.1 A, B, C, D and E are members of the same family. There are two fathers, two sons, two wives three males and two females. The teacher was the wife of a lawyer who was the son of a doctor. E is not a male, neither also a wife of a professional. C is the youngest person in the family and D is the eldest. B is a male.

Q1. How is D related to E? [CSAT 2011]

(a) Husband

(b) Son

(c) Father

(d) Wife

Solution:

Given that,

The people A, B, C, D, and E belong to the same family. There are three male and two females, two wives, two fathers, and two sons.

The teacher's husband was a lawyer whose father was a physician.

E is not a male and she is not a professional's wife either.

D is the eldest family member, and C is the youngest.

B is a male

 

Thus D is the grandfather and E is a wife of D as E is a doctor and not a wife of professional

Therefore D is a husband of E

Hence option (a) is correct

Q2. Who are the females in the group? [CSAT 2011]

(a) C and E

(b) C and D

(c) E and A

(d) D and E

Solution:

Given that,

 

E is a female and A is a female

so, E and A

Hence option (c) is correct

Q3. Whose wife is the teacher? [CSAT 2011]

(a) C

(b) D

(c) A

(d) B

Solution:

Given that,

 

B's wife is A and A is a teacher. Thus B`s wife is teacher

Hence option (d) is correct

Q4. Given that, [CSAT 2012]

1. A is the brother of B.

2. C is the father of A.

3. D is the brother of E.

4. E is the daughter of B.

Then the uncle of D is

(a) A

(b) B

(c) C

(d) E

Solution:

Given that,

 

C is the father of A and A is brother of B

So C and A have a father son relation. Also A and B are siblings

D and E are siblings and D is male and E is female. The generation gap between E and B

So the uncle of D is A

Hence option (a) is correct

Directions for the following 3 (three) items:

Read the passage given below and answer the items that follow.

A, B, C, D, E, F are members of a family. They are engineer, stenographer, doctor, draughtsman, lawyer and judge (not in order). A, the engineer is married to the lady stenographer. The judge is married to the lawyer. F, the draughtsman is the son of B and brother of E. C, the lawyer is the daughter-in-law of D. E is the unmarried doctor. D is the grandmother of F. There are two married couples in the family.

Q5. What is the profession of B? [CSAT 2014]

(a) Judge

(b) Lawyer

(c) Draughtsman

(d) Cannot be determined.

Solution:

Given that,

There are only two married couple in the family

A = Engineer is married to the lady stenographer.

F = draughtsman, the son of B and brother of E

C = Lawyer and daughter in law of D. Also married to Judge

E = Unmarried doctor

D = grandmother of F

 

Thus the given information implies that D is married to A and is a stenographer. Whereas C is married to B and B is a judge.

Hence option (a) is correct

Q6. Which of the following is/are couple/couples? [CSAT 2014]

(a) AD only

(b) BC only

(c) Both AD and BC

(d) Both AC and BD

Solution:

Given that,

There are only two married couple in the family

A = Engineer is married to the lady stenographer.

F = draughtsman, the son of B and brother of E

C = Lawyer and daughter in law of D. Also married to Judge

E = Unmarried doctor

D = grandmother of F

 

Thus the given information implies that D is married to A and is a stenographer. Whereas C is married to B and B is a judge.

B and C and D and A are couples

Hence option (c) is correct

Q7. What is the profession of D? [CSAT 2014]

(a) Judge

(b) Stenographer

(c) Doctor

(d) Cannot be determined

Given that,

There are only two married couple in the family

A = Engineer is married to the lady stenographer.

F = draughtsman, the son of B and brother of E

C = Lawyer and daughter in law of D. Also married to Judge

E = Unmarried doctor

D = grandmother of F

 

Thus the given information implies that D is married to A and is a stenographer. Whereas C is married to B and B is a judge.

Thus D is Stenographer

Hence option (b) is correct

Q8. Four persons A, B, C and D consisting of two married couples are in a group. Both the women are shorter than their respective husbands. A is the tallest among the four. C is taller than B. D is B's brother. In this context, which one of the following statements is not correct? [CSAT 2015]

(a) All four have family ties.

(b) B is the shortest among the four.

(c) C is taller than D.

(d) A is B's husband.

Solution:

Given that,

A, B, C and D consisting of two married couples.

Both the women are shorter than their respective husbands.

 

A is the tallest among the four = A > ......

C is taller than B. D is B's brother.

Thus this implies that A and D are husbands and also B is wife of A and C is wife of D as D is brother of B.

A > D > C > B

Hence option (c) is not correct

Directions for the following 5 (five) items:

Consider the following information and answer the five items that follow:

There are five persons in a group - P, Q, R, S, and T. The group has one doctor, one lawyer and one artist. P and S are unmarried students. T is a man married to one of the group members. Q is the brother of P and is neither doctor nor artist. R is not doctor.

09. Who is the doctor? [CSAT 2016]

(a) T

(b) P

(c) Q

(d) R

Solution:

Given that,

Five persons in a group - P, Q, R, S, and T

The group has one doctor, one lawyer and one artist.

P and S are unmarried students.

T is a man married to one of the group members.

Q is the brother of P and is neither doctor nor artist.

R is not doctor.

 

From the given information: P and S are students

T is a doctor as no other options are left

Hence option (a) is correct

Q10. Who is the artist? [CSAT 2016]

(a) P

(b) Q

(c) R

(d) T

Solution:

Given that,

Five persons in a group - P, Q, R, S, and T

The group has one doctor, one lawyer and one artist.

P and S are unmarried students.

T is a man married to one of the group members.

Q is the brother of P and is neither doctor nor artist.

R is not doctor.

 

From the given information: P and S are students

T is a doctor as no other options are left

R is the artist as Q is neither doctor nor artist.

Hence option (c) is correct

Q11. Who is the spouse of R?[CSAT 2016]

(a) P

(b) T

(c) Q

(d) S

Solution:

Given that,

Five persons in a group - P, Q, R, S, and T

The group has one doctor, one lawyer and one artist.

P and S are unmarried students.

T is a man married to one of the group members.

Q is the brother of P and is neither doctor nor artist.

R is not doctor.

 

From the given information: P and S are students

T is a doctor as no other options are left

R is the artist as Q is neither doctor nor artist.

Q and T are male and T is married to one of the members where only R remains the one as P and S are unmarried

T is the spouse of R

Hence option (b) is correct

Q12. Who is the lawyer? [CSAT 2016]

(a) P

(b) Q

(c) R

(d) S

Solution:

Given that,

Five persons in a group - P, Q, R, S, and T

The group has one doctor, one lawyer and one artist.

P and S are unmarried students.

T is a man married to one of the group members.

Q is the brother of P and is neither doctor nor artist.

R is not doctor.

 

From the given information: P and S are students

T is a doctor as no other options are left

R is the artist as Q is neither doctor nor artist.

Q is the lawyer.

Hence option (b) is correct

Q13. Who of the following is definitely a man? [CSAT 2016]

(a) P

(b) S

(c) Q

(d) None of the above

Solution:

Given that,

Five persons in a group - P, Q, R, S, and T

The group has one doctor, one lawyer and one artist.

P and S are unmarried students.

T is a man married to one of the group members.

Q is the brother of P and is neither doctor nor artist.

R is not doctor.

 

From the given information: P and S are students

Q and T are male

Thus Q and T are male. Hence Q is definitely man

Hence option (c) is correct

Q14. A joint family consists of seven members A, B, C, D, E, F and G with three females. G is a widow and sister-in-law of D's father F. B and D are siblings and A is daughter of B. C is cousin of B. Who is E? [CSAT 2019]

1. Wife of F

2. Grandmother of A

3. Aunt of C

Select the correct answer using the code given below:

(a) 1 and 2 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3

Solution:

Given that,

Seven members are A, B, C, D, E, F and G with three females.

G is a widow and sister-in-law of D's father F.

B and D are siblings

A is daughter of B.

C is cousin of B.

G and A are females.


Considering the statements:

1.  Wife of F

So if 1 is true then there are three females G, A and E where E is grandmother of A and as C is cousin of B so E is aunt of C.

Thus all the statements are true.

Hence option (d) is correct

Q15. Consider the following: [CSAT 2017]

A + B means A is the son of B.

A-B means A is the wife of B.

What does the expression P+R-Q mean?

(a) Q is the son of P.

(b) Q is the wife of P.

(c) Q is the father of P.

(d) None of the above

Solution:

Given that,

A + B means A is the son of B and A-B means A is the wife of B.

 

P + R means P is son of R and R - Q means R is wife of Q

Thus Q is the father of P

Hence option (c) is correct

Q16. Consider the following relationships among members of a family of six persons A, B, C, D, E and F: [CSAT 2017]

1. The number of males equals that of females.

2. A and E are sons of F.

3. D is the mother of two, one boy and one girl.

4. B is the son of A.

5. There is only one married couple in the family at present.

Which one of the following inferences can be drawn from the above?

(a) A, B and C are all females.

(b) A is the husband of D.

(c) E and F are children of D.

(d) D is the daughter of F.

Solution:

Given that,

From statement 2 and 4: A and E are sons of F and B is the son of A.

Also from statement 1: The number of males equals that of females.

Thus A, E and B are males and C, D  and F are females.

Therefore Option (a) and Option (c) are eliminated as C, D  and F are females and E and F are not siblings. E is the son of F

From statement 3: C is the daughter of D and B is the son of A. So, A and D are married couples.

 

Thus the family relation as follows:

F is the grandmother whose sons are A and E, A and D are married couples, B and C are daughter and son of A and D.

Hence option (b) is correct.

Q17. A family of two generations consisting of six numbers P, Q, R, S, T and U as three males and three females. There are two married couples and two unmarried siblings. U is P's daughter and Q is R's mother-in-law. T is an unmarried male and S is a male. Which one of the following is correct? [CSAT 2020]

(a) R is U's husband.

(b) R is S's wife.

(c) S is unmarried.

(d) None of the above

Solution:

Given that,

The family is of two generations and number of males equals number of females.

Q and U are females and T and S are males.

Also, U is P's daughter and Q is R's mother-in-law so P and Q belong to first generation and U and R belong to second generation and R is married to one of Q's children.

 

As T is unmarried and there are two couples in the family so S must be married.

Therefore with logical inference: P and Q are married couples and R and S are married couples.

S and U are children of P and Q. T is son of Q and P

Hence option (b) is correct

Q18. P, Q, R, S, T and U are six members of a family. R is the spouse of Q. U is the mother of T and S is the daughter of U. P's daughter is T and R's son is P. There are two couples in the family. Which one of the following is correct? [CSAT 2022]

(a) Q is the grandfather of T.

(b) Q is the grandmother of T.

(c) R is the mother of P.

(d) T is the granddaughter of Q.

Solution:

Given that,

U is the mother of T and S where S is the daughter

So U and S are females

Also, P's daughter is T and R's son is P, so P and U are married couples and T and S are daughters.

 

Thus R and Q are couples of first generation a where T and S are granddaughter of R and Q.

Hence option (d) is correct.

Q19. Consider the Question and two Statements given below: [CSAT 2022]

Question: Is Z brother of X?

Statement-1: X is a brother of Y and Y is a brother of Z.

Statement-2: X, Y and Z are siblings.

Which one of the following is correct in respect of the Question and the Statements?

(a) Statement-1 alone is sufficient to answer the Question.

(b) Statement-2 alone is sufficient to answer the Question.

(c) Both Statement-1 and Statement-2 are sufficient to answer the Question.

(d) Both Statement-1 and Statement-2 are not sufficient to answer the Question.

Solution:

Given that,

From statement 1: X is a brother of Y and Y is a brother of Z.

The gender of Z cannot be determined so whether Z is the brother of X cannot be implicated.

Hence statement 1 alone is not sufficient.

Statement-2: X, Y and Z are siblings.

The gender of Z cannot be determined so whether Z is the brother of X cannot be implicated.

Hence statement 2 alone is not sufficient.

Combining both statement 1 and 2:

 

Z is though the sibling of X but Z can be male or female. Thus the specific conclusion cannot be drawn.

Hence Both Statement-1 and Statement-2 are not sufficient to answer the Question.

Q20. Consider the following including the Question and the Statements: [CSAT 2023]

There are 5 members A, B, C, D, E in a family.

Question: What is the relation of E to B?

Statement-1: A and B are a married couple.

Statement-2: D is the father of C.

Statement-3: E is D's son.

Statement-4: A and C are sisters.

Which one of the following is correct in respect of the above Question and Statements?

(a) Statement-1, Statement-2 and Statement-3 are sufficient to answer the Question.

(b) statement-1 Statement-3 and Statement-4 are sufficient to answer the Statement Question.

(c) All four statements together are sufficient to answer the Question.

(d) All four statements are not sufficient to answer the Question.

Solution:

Given that,

From statement 1, 2 and 3: A and B are a married couple and D is the father of C and E is D's son.

 

So D is father of C and E and E is the son.

From statement 4: A and C are sisters.

So, combining all the statements, A is wife of B as A and C are sisters, A is daughter of D so E is brother in law of B.

Hence All four statements together are sufficient to answer the Question

ANSWER KEY

1.      A

11.  B

2.      C

12.  B

3.      D

13.  C

4.      A

14.  D

5.      A

15.  C

6.      C

16.  B

7.      B

17.  B

8.      C

18.  D

9.      A

19.  D

10.  C

20.  C

Download Blood Relations PYQs PDF

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FAQs on Blood Relations for UPSC

1. Is Blood Relations important for UPSC?

Yes, Blood Relations is a crucial topic for the UPSC CSAT paper. It tests your logical reasoning and ability to interpret family relationships.

2. How to prepare for Blood Relations in UPSC?

  • · Understand basic concepts like family trees, relationships, and generational hierarchies.
  • · Practice PYQs regularly.
  • · Use reliable resources like NCERT books and online platforms like iassetu.com.

3. What are the most frequently asked Blood Relations questions in UPSC?

  • · Relationship puzzles
  • · Family tree-based questions
  • · Complex relationship scenarios

Conclusion

Practicing Blood Relations PYQs is essential for cracking the UPSC CSAT paper. This page provides year-wise solved questions, practice problems, and a free PDF download to help you prepare effectively. Bookmark this page and revisit it regularly for updates.

For more UPSC preparation resources, explore iassetu.com. Happy learning!

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