Blood Relation, Study Notes, Material - KVS & DSSSB (PRT & TGT)

By Ashish Kumar|Updated : September 13th, 2022

In this article, we should read related to How to solve Blood Relation Questions ?, Important for the KVSDSSSB PRT & TGT exam.

 The Reasoning section of every competitive exam includes questions from the topic "Blood Relations". This topic is considered to be quite important and every year a good number of questions are asked about this topic. It is considered to be a very scoring topic. We are providing you with all the important tools to solve blood relations questions.



How to solve Blood Relation Questions easily?

Family or Blood Relationship means persons connected by relations like –

father-mother, son daughter, brother-sister, grandfather-grandmother, uncle-aunty, nephew-niece, brother-in-law sister-in-law etc. The list can go on and on adding members from the father’s side and mother’s side etc.

Questions in Test of Reasoning on Family /Blood Relationship are about the relationship of a particular person with another person of the family, based on the chain of relationships between other members of that family

Family/Blood Relation Tests are an exercise to test the candidate’s ability to comprehend and come to the crux of an issue from complex, lengthy and unclear data.

 Example 1:

‘Ram’ is the father of ‘Kusha’ but ‘Kusha’ is not his son. ‘Mala’ is the daughter of ‘Kusha’.’ Shalaka’ is the spouse of ‘Ram’. ‘Gopal’ is the brother of ‘Kusha’. ‘Hari’ is the son of ‘Gopal’. ‘Meena’ is the spouse of ‘Gopal’. ‘Ganpat’ is the father of ‘Meena’. Who is the granddaughter of ‘Ram’?

(1) Hari

(2) Mala

(3) Meena

(4) Shalaka


‘Mala’ is the daughter of ‘Kusha’ and ‘Ram’ is the father of ‘Kusha’. So, ‘Mala’ is the granddaughter of ‘Ram’. Hence, the answer is (2) Mala.

Some Common Terms

The meaning of some terms often used in questions on the family relationship is given below:

a) Parent – Mother or father

b) Child – Son or daughter (even if an adult)

c) Sibling – Brother or sister (Including half brother and half-sister - one parent in common)

d) Spouse – Husband or wife

Basic Relationships:-

Aunt, Uncle, Niece and Nephew

  • Most English speakers useuncle” for any of four relationships: father’s brother, mother’s brother, father’s sister’s husband, or mother’s sister’s husband.
  • Again, “aunt” in English could mean father’s sister, mother’s sister, father’s brother’s wife, or mother’s brother’s wife.
  • Brother’s or sister’s son is called a nephew. Brother’s or sister’s daughter is called a niece.
  • Children of aunt or uncle are called cousins.

Relationships Involving the Term ‘-in-law’


  •  Any relationship term ending with -in-law indicates that the relationship is by marriage and not by blood. In other words, -in-law will be a blood relative of the spouse.
  • In-law relationship terms are always written with hyphens. And the plural is formed on the part before the “-in-law”;

For example, “brothers-in-law” and not “brother-in-laws”. The only exception is the general term “in-laws”, which is always plural.

Father-in-law, Mother-in-law, Son-in-law and Daughter-in-law

  •  Father-in-law is the father of the spouse; mother-in-law is the mother or a spouse. If parents get divorced and remarry, their new spouses are called stepparents, not mother-in-law and father-in-law.
  • The husband of the daughter is a son-in-law; the wife of the son is a daughter-in-law. If a spouse has children from a previous marriage, those are called stepchildren, not sons-in-law or daughters-in-law. The person is their stepfather or stepmother, not their father-in-law or mother-in-law.

Brother-in-law and Sister-in-law

  •  Brother-in-law” and “Sister-in-law” each have two or three meanings as follows:

a) Sister-in-law could be

i) The sister of a spouse, or

ii) The wife of brother, or

iii) The wife of a spouse’s brother.

b) Similarly, Brother-in-law could be

i) The brother of a spouse, or

ii) The husband of a sister, or

iii)  The husband of a spouse’s sister.

Relationships Involving the Terms ‘Grand’ and ‘Great’

  •  The relationships of the second generation are prefixed with the word Grand.
  • Similarly, for a person, the first generation above him would be that of his/her parents (Father/ Mother). The next/second generation above him/her would be the parents of the parents who would be called Grand Parents/ Grand Father/ Grand Mother of that person. The next/ third generation parents would be called Great Grand Parents/ Great Grand Father/ Great Grand Mother of that person.
  • This also applies to collateral relationships.

For example, Son of the nephew of a person is called Grand Nephew; the Brother of Grand Father is called Grand Uncle and so on.

  • The fourth-generation relationships are called the Great Great Grand. For example, the Son of Great Grand Son is Great Great Grand Son.

There are two ways Martha could have a stepsister:

a) If Martha’s mother marries the second time, and her new husband (Martha’s new stepfather) already has a daughter from a previous marriage, that daughter is Martha’s stepsister because one of her parents is married to one of Martha’s parents.

b) If Martha’s father marries the second time, and his new wife already has a daughter, that daughter is again Martha’s stepsister.

Summary of Some Common Relationships

  • A summary of some common Relationships is given below in tabular forms:

some common Relationships

This article tends to be beneficial for the following exams - REETUPTETCTETSuper TETDSSSBKVS, etc.
You may refer to the following books:
Serial No.Book NameAuthor Name
1.A New Approach to Reasoning Verbal & Non-VerbalB.S. Sijwalii and Indu Sijwali
2.How to Crack Test Of Reasoning- REVISED EDITIONJaikishan and Premkishan
3.Logical and Analytical Reasoning (Useful for All Competitive Exams)A K Gupta

Note: All the study notes are available in Hindi as well as the English language. Click on A/अ to change the language.



Download the BYJU’S Exam Prep App Now.
The most comprehensive exam prep app


Frequently Asked Questions (FAQs)



write a comment


  •  The weightage of Reasoning Section in DSSSB & KVS Exams - 10 to 12 Marks.

  • The level of questions asked in DSSSB & KVS Exams - Medium.

  • 2 to 3 questions can be asked from the blood relation topic in DSSSB & KVS Exams.

Follow us for latest updates