How to Improve Blood Relation Mental Ability Test for All Competitive Exams
Blood relation questions are a regular feature in exams like SSC, Banking, Railways, Defence, State PSCs, and many school-level competitive tests. These questions look confusing at first, but with the right method and steady practice, they become quick scoring.
This article explains a simple approach, common patterns, and practice MCQs with clear explanations.
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What Are Blood Relation Questions?
These questions test your ability to understand family relationships using given information. You may be asked to identify relations like uncle, aunt, cousin, grandfather, or niece based on clues.
Example: “P is the brother of Q. Q is the mother of R. How is P related to R?”
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Step-by-Step Strategy to Improve
1. Learn Basic Relationships Clearly
Before solving questions, be very clear about basic terms:
Father’s father = Grandfather
Mother’s brother = Maternal uncle
Brother’s son = Nephew
Sister’s daughter = Niece
If basics are weak, questions feel difficult even when logic is simple.
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2. Use Symbols Instead of Words
Convert sentences into symbols to reduce confusion.
Male: ♂
Female: ♀
Example: “R is the son of S”
→ R ♂, S ♀
This helps you visualize the family structure.
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3. Draw a Family Tree
For long questions, always draw a rough family tree. Do not try to solve everything mentally.
Even a small diagram saves time and avoids mistakes.
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4. Identify the Final Question First
Read the last line first to know what relation is being asked. Then connect only the required links.
This avoids unnecessary confusion.
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5. Practice Daily with Timed Questions
Blood relation questions improve only with practice. Start without time pressure, then practice with a timer to improve speed.
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Common Types of Blood Relation Questions
1. Direct relationship questions
2. Coded blood relations
3. Puzzle-based family trees
4. Mixed relations with directions
Below are MCQs covering common patterns.
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Practice MCQs with Explanation
MCQ 1
A is the father of B. B is the sister of C. How is A related to C?
A. Uncle
B. Father
C. Brother
D. Grandfather
Correct Answer: B. Father
Explanation:
A is father of B.
B is sister of C, so B and C are siblings.
Hence, A is also the father of C.
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MCQ 2
P is the brother of Q. Q is the mother of R. How is P related to R?
A. Father
B. Uncle
C. Brother
D. Grandfather
Correct Answer: B. Uncle
Explanation:
P is brother of Q.
Q is mother of R.
So, P is the maternal uncle of R.
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MCQ 3
M is the daughter of N. N is the sister of O. How is O related to M?
A. Father
B. Uncle
C. Aunt
D. Grandfather
Correct Answer: B. Uncle
Explanation:
N is sister of O, so O is male.
M is daughter of N.
Hence, O is the uncle of M.
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MCQ 4
A is the son of B. B is the brother of C. C is the mother of D. How is A related to D?
A. Cousin
B. Brother
C. Uncle
D. Nephew
Correct Answer: A. Cousin
Explanation:
B and C are siblings.
A is son of B.
D is child of C.
Children of siblings are cousins.
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MCQ 5
Pointing to a man, R said, “He is the son of my grandfather’s only son.” How is the man related to R?
A. Brother
B. Cousin
C. Father
D. Uncle
Correct Answer: A. Brother
Explanation:
Grandfather’s only son = R’s father.
The man is son of R’s father.
So, the man is R’s brother.
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Quick Tips for Exam Hall
Always note gender first
Draw symbols quickly on rough paper
Do not assume relationships without confirmation
Recheck the final relation asked
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Final Words
Blood relation questions are not tough. They test clarity, not memory. Master the basics, draw small family trees, and practice regularly. With time, you will solve most questions in seconds.