Current Affairs 12th Class

Notes - Blood Relations

Category : 12th Class

Blood Relations

Introduction: Blood relation test is information about blood relationship among the members of a family. In these questions, a chain process of two persons is given. On the basis of this the relations of the others are to be found out.

Types of Blood Relations

The relations may be divided into two types as given below:

(i) Blood relation from paternal side.

(ii) Blood relation from maternal side.

Now, we will discuss both kind of relations one by one.

Blood Relation From Paternal Side

This type of blood relation can further be subdivided into three types:

(a) Past generations of father

Example: Great grandfather, great grandmother, grandfather, grandmother etc.

(b) Parallel generations of father

Example: Uncles (Brothers of father), aunts (Sisters of father) etc.

Example: Sons, daughters, grandsons, grand-daughters etc.

Blood Relation From Maternal Side

This type of blood relations can also be subdivided into three types:-

(a) Past generations of mother

Example: Maternal great grandfather, maternal great grandmother, maternal grandfather, maternal grandmother etc.

(b) Parallel generations of mother

Example: Maternal uncles, maternal aunts etc.

Example: Sons, daughters, grandsons, grand-daughters etc.

Some Important Blood Relations

Son of father or mother		Brother
Daughter of father or mother		Sister
Brother of father		Uncle
Brother of mother		Maternal Uncle
Sister of father		Aunt
Sister of Mother		Aunt
Father of father		Grandfather
Father of father of father		Great grandfather
Father of grandfather		Great grandfather
Mother of father		Grandmother
Mother of mother of father		Great grandmother
Mother of grandmother		Great grandmother
Father of mother		Maternal Grandfather
Father of father of mother		Great Maternal grandfather
Father of maternal grandmother		Great Maternal grandfather
Mother of mother		Maternal grandmother
Mother of mother of mother		Great Maternal grandmother
Mother of maternal grandmother		Great Maternal grandmother
Wife of father		Mother
Husband of mother		Father
Wife of grandfather		Grandmother
Husband of grandmother		Grandfather
Wife of son		Daughter in law
Husband of daughter		Son in law
Brother of husband		Brother in law
Brother of wife		Brother in law
Sister of Husband		Sister in law
Sister of wife		Sister in law
Son of brother		Nephew
Daughter of brother		Niece
Wife of brother		Sister in law
Husband of sister		Brother in law
Son of sister		Nephew
Daughter of sister		Niece
Wife of uncle		Aunt
Wife of maternal uncle		Aunt
Son / daughter of uncle / aunt		Cousin
Son / daughter of maternal uncle / maternal aunt		Cousin
Son / daughter of sister of father		Cousin
Son / daughter of sister of mother		Cousin
Only son of grandfather		Father
Only daughter of maternal grandfather		Mother
Daughter of grandfather		Great maternal grandfather
Sons of grandfather other than father		Great maternal grandfather
Son of maternal grand father		Maternal uncle
Only daughter in law of Grandfather / grandmother		Mother
Daughter in law of Grandfather / grandmother		Aunt
Daughter in law of maternal Grandfather / maternal grandmother		Aunt
Neither brother nor sister		Self

Important Points to Remember

Without the information of gender/ no relationship can be established between two people. For example, if given that R is the child of P & Q, then we can only say that P & Q are the parents of R. But we cannot find out the following.

(i) R is the son of P & Q or R is the Daughter of P & Q.

(ii) Who is the mother of R and who is the father of R.

But if it is given that P is a male, Q is a female and R is male, then we can easily say that R is the son of P & Q. Further, we can also say that P is the father of R and Q is the mother of R.

Gender cannot be decided on the basis of name. For example, in Sikh community the names like Manjit, Sukhvinder etc. are the names of both male and female. Similarly, in the Hindu community ‘Suman’ is the name of both male and female.

Solution Tips

(a) While solving blood relation based questions, first of all find out that two persons between whom a relationship has to be established.

(b) Next, try to find out middle relation.

Example:

A is the son of C, C and Q are sisters, R is the mother of Q. If A is the father of P then which of the following options is correct?

(a) R is the maternal grandmother of A

(b) P is the Maternal uncle of A

(d) All of the above

(e) None of these

Ans. (a)

Explanation: Option (a) is correct. A is the son of C and R is the mother of C. So R is the maternal grand-mother of A.

“Your father is father of my father” said Ravi to Seeta. How are

(a) Cousins (b) Nephew and Aunt

(e) None of the above

Ans. (b)

Explanation: Option (b) is correct. Seeta’s father is the father of Ravi’s father means Seeta is the sister of Ravi’s father. So Ravi is the nephew of Seeta.

Leela, who is Sohan’s daughter, says to Lalita “Your mother Alka is the younger sister of my father, who is the third child of Raja”. Establish the relationship between Raja and Lalita?

(a) Father (b) Uncle

(e) None of these

Ans. (c)

Explanation: Option (c) is correct. Alka is the sister of Sohan and their father is Raja.

So Raja is the grandfather of Leela and maternal grandfather of Lalita.

4. A tells B that C is his father’s nephew. D is A’s cousin but not the brother or sister of C. What relationship is there between D and C?

(a) Father (b) Cousin

(e) None of these

Ans. (b)

Explanation: Option (b) is correct, D is cousin of A and A is cousin of C. So C is cousin of D.

5. F is the brother of A, C is the daughter of A, K is the sister of F and G is the brother of C then who is the uncle of G?

(a) F (b) K

(e) None of these

Ans. (a)

Explanation: Option (a) is correct. A is the father of G and F is the brother of A. Therefore, F is the uncle of G.

Snap Test

B is husband of C, A is sister of B and D is sister of C. How is D related to B?

(a) Son (b) Uncle

(e) None of these

Ans. (d)

Explanation: Option (d) is the correct. B is husband and C is his wife. A is sister of B means A is sister-in-law of C (husband’s sister). And D is sister of C means D is sister-in-law of B (wife’s sister).

2. ‘A’ is the father of ‘B’ and ‘C‘, ‘B’ is the son of ‘A’ but ‘C’ is not the son of ‘A’. What is ‘C’ relation with ‘A’?

(a) Daughter (b) Son

(e) None of these

Ans. (a)

Explanation: Option (a) is correct

A man introduced the boy coming with him as “He is the son of the father of my wife’s daughter”. What is the relation between the boy and the man?

(a) Son-in-law (b) Son

(e) None of these

Ans. (b)

Explanation: Option (b) is correct.

4. A man and a woman are sitting in a room. Man’s mother-in-law and woman’s mother in-law are mother and daughter respectively. Man is the ....... of the woman.

(a) Father (b) Father-in-law

(e) None of these

Ans. (b)

Explanation: Option (b) is correct.

Woman’s mother-in-law is the daughter of Man’s mother-in-law. So, the man is the husband of woman’s mother-in-law.

Daya has a brother Anil, Daya is the son of Chandra, Bimal is Chandra’s father. In term of relationship, what is Anil of Bimal?

(a) Son (b) Grandson

(e) None of these

Ans. (b)

Explanation: Option (b) is correct. Anil is the brother of Daya and Daya is the son of Chandra.

So, Anil is the son of Chandra. Now, Bimal is the father of Chandra.

So, Anil is the grandson of Bimal.

A and B are two brothers. C and D are sisters. A’s son is D’s brother. How is B related to C?

(a) Father (b) Brother

(e) None of these

Ans. (d)

Explanation: Option (d) is correct. Clearly, B is the brother of A; A’s son is D’s brother. This means D is the daughter of A, since C and D are sisters, C is also the daughter of A.

Pointing to man, a woman said, “his mother is the only daughter of my mother. “How is the woman related to the mother?

(a) Mother (b) Daughter

Ans. (a)

Explanation: Only daughter of my mother-Myself.

So the woman is the man’s mother.

Pointing to a lady, a man said, “The son of her only brother is the brother, is the brother of my wife.” How is the lady related to the man?

(a) Mother’s sister (b) Grandmother

Ans. (d)

Explanation: Wife’s brother-Brother-in-law.

Son of lady’s brother is the brother-in-law of the man.

So, lady’s brother is man’s father-in-law i.e. the lady is the sister of man’s father-in- law.

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