CBSE Class 11 · Constitution: Why and How?

Why We Need a Constitution: Its Five Functions and Authority (Class 11 Political Science, Indian Constitution at Work, Chapter 1)

Updated 17 October 2026 · Fact-checked

A constitution provides basic rules for coordination and assurance, specifies who makes decisions, limits the powers of government, enables government to meet society's aspirations, and expresses the fundamental identity of a people. Its authority rests on the mode of promulgation, substantive provisions that give everyone a reason to go along, and a balanced institutional design.

Understand The Five Functions of a Constitution and What Gives It Authority

Why this topic matters. Board papers ask for the functions of a constitution (3-5 marks) and why some constitutions succeed (3-4 marks); the check-your-progress style items match a function to a statement.

1. Coordination and assurance. A large diverse group that must live together needs basic rules, publicly known, to coordinate and give each member assurance that others will obey. Rules must be enforceable; without assurance there is no reason to obey. Function 1: a constitution provides basic rules that allow minimal coordination.

2. Who decides. A constitution is a body of fundamental principles by which a state is constituted and run. Before deciding what rules to make, a society must settle who decides: a monarch, a single party (as in the old Soviet Union) or the people. Even in a democracy it must be decided how people decide, directly or through elected representatives. The Indian Constitution gives Parliament the authority to make laws and policies in most instances. Function 2: it specifies who has the power to make decisions and how the government is constituted.

3. Limits. A legitimately formed government may still pass unjust laws, for example allowing arbitrary arrest or discriminating against a group. A constitution sets limits that government may never cross, most commonly through fundamental rights such as no arbitrary arrest and freedom of speech, conscience, association and trade. These can be limited in a national emergency as the constitution specifies. Function 3: it limits what a government can impose on citizens.

4. Aspirations and goals. Many twentieth-century constitutions, the Indian Constitution being the finest example according to the textbook, also give government an enabling framework to overcome inequality and deprivation, as in the aim of a society free of caste discrimination (India) or racial discrimination (South Africa). The Preamble, Fundamental Rights and Directive Principles support this. Function 4: it empowers government to realise society's aspirations.

5. Identity. A constitution expresses a people's basic political and moral identity and its fundamental values. Constitutions embody different ideas of nationhood: German identity was constituted by being ethnically German, whereas the Indian Constitution does not make ethnic identity a criterion of citizenship. Function 5: it expresses the fundamental identity of a people.

6. Authority. Many constitutions exist only on paper. Effectiveness depends on: (i) the mode of promulgation (the most successful, India, South Africa and the United States, followed popular national movements); (ii) substantive provisions that give everyone a reason to go along, preserving freedom and equality and not letting permanent majorities oppress minorities; (iii) a balanced institutional design that fragments power among legislature, executive and judiciary and independent bodies such as the Election Commission, and balances core values with flexibility, making India's a 'living' document. Nepal's constitutions of 1948, 1951, 1959, 1962 and 1990 were all 'granted' by the king, and Nepal became a democratic republic in 2008 and adopted a new constitution in 2015.

The Five Functions of a Constitution and What Gives It Authority: key facts

Five functions: Coordination and assurance
Who decides
Limits on government
Aspirations and goals
Fundamental identity; Learn as a list.
Three tests of authority: Mode of promulgation
Substantive provisions
Balanced institutional design; Why constitutions succeed.
Matching statements: Government cannot order a religion = limits
Reduce inequality = aspirations
President appoints Prime Minister = who decides
Citizenship for all = identity; Check-your-progress items.
Nepal: Constitutions 1948, 1951, 1959, 1962, 1990 granted by the King
Republic 2008
New constitution 2015; Example of change.

How to answer The Five Functions of a Constitution and What Gives It Authority questions

Function-matching items depend on the key action in the statement.

1Underline the action word (limits, decides, aims, defines).
2Match it with the function that is about that action.
3Give a one-line reason.
4For long answers add an Indian example for each function.

The Five Functions of a Constitution and What Gives It Authority in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Class rules

Suppose a school assembly decides rules for the library, who may borrow how many books, and states that the head cannot ban students from using it without reason.

Which two functions are shown?

Try it first, then show the solutionSolution

Rules for coordination and assurance.
A limit on the power of the authority.

Answer: Coordination and assurance, and limits on power.

Memory hook: Rules plus limits.

A promise of equal dignity

Suppose a new country writes into its constitution that the state must work to remove deep social inequalities.

Which function is this?

Try it first, then show the solutionSolution

It enables government to realise society's goals.
Aspirations and goals of a society.

Answer: Aspirations and goals.

Memory hook: Enabling government to do good.

Tricks to remember The Five Functions of a Constitution and What Gives It Authority

Short memory aids. Say each one aloud once, then use it on a question the same day.

C-W-L-A-I
Coordination, Who decides, Limits, Aspirations, Identity
Use it when: Five functions.
P-P-D
Promulgation, Provisions, Design
Use it when: Authority.
Living document
Core values with flexibility
Use it when: India's balance.

The Five Functions of a Constitution and What Gives It Authority: solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: Function match · 1 mark · MCQBoard level

The statement "the President has the power to appoint the Prime Minister" illustrates which function of a constitution?
(A) setting limits on government
(B) specifying who has the power to decide
(C) expressing identity
(D) providing aspirations

Try it first, then show the solutionSolution

Specifying who holds the power to make decisions (1 mark).

Answer: (B)

Example 2: Limits on government · 2 marks · Very short answerBoard level

Why does a constitution limit the powers of government even when the government is legitimately formed? (2 marks)

Try it first, then show the solutionSolution

A legitimate government can still pass unjust laws (1 mark).
Fundamental rights set limits it may not cross (1 mark).

Answer: Even a legitimately formed government may make unjust laws, for example allowing arbitrary arrest. A constitution sets limits through fundamental rights that government may never violate.

Example 3: Aspirations function · 3 marks · Short answerHarder board level

Explain how the Indian Constitution fulfils the "aspirations and goals" function, with an example from India and one from another country. (3 marks)

Try it first, then show the solutionSolution

Enabling framework so that government can overcome inequality (1 mark).
India: a society free of caste discrimination, supported by Preamble, Fundamental Rights and Directive Principles (1 mark).
South Africa: ending racial discrimination, or Indonesia: a national education system (1 mark).

Answer: Besides limiting government, the Indian Constitution enables it to remove inequality and deprivation, for instance towards a society free of caste discrimination, through the Preamble, Fundamental Rights and Directive Principles. Another example is South Africa, whose constitution has to enable government to end racial discrimination.

Example 4: Assertion and reason: referendum · 1 mark · Assertion-reasonHarder board level

Assertion (A): The Indian Constitution did not need a referendum to gain authority.
Reason (R): It drew on a popular national movement and the credibility of its framers, and people adopted it by abiding by it.
(A) Both true, R explains A
(B) Both true, R does not explain A
(C) A true, R false
(D) A false, R true

Try it first, then show the solutionSolution

The chapter says India held no referendum but people adopted the Constitution by following it (1 mark).

Answer: (A)

Example 5: HOTS: why do some constitutions fail · 5 marks · Long answerHOTS / competency

Two countries each have a written constitution. Country X's was drafted by an unpopular military ruler and lets one group permanently dominate. Country Y's was made after a broad national movement, protects freedom and equality, and divides power among several bodies. Using the three tests in the chapter, predict which is likely to survive and why. (5 marks)

Try it first, then show the solutionSolution

Test 1: mode of promulgation; constitutions by military or unpopular leaders often remain defunct (1 mark).
Y followed a popular movement, like India, South Africa and the US (1 mark).
Test 2: provisions must give everyone a reason to go along; X lets a permanent majority oppress others (1 mark).
Test 3: Y fragments power (checks and balances) while X does not (1 mark).
So Y is likely to survive, though no constitution is perfectly just (1 mark).

Answer: Country Y is more likely to survive. On promulgation, constitutions drafted by military or unpopular leaders often remain defunct, while the most successful followed popular national movements. On provisions, a constitution that lets a group permanently dominate gives others no reason to go along, whereas one that protects freedom and equality earns allegiance. On institutional design, Y fragments power among several bodies, which prevents subversion by small groups. No constitution achieves perfect justice, but Y satisfies the three tests better.

Where students lose marks in The Five Functions of a Constitution and What Gives It Authority

The slips examiners see most often, and what to write instead.

Mistake: Listing only three functions
Learning by memory.
Wrong working
Functions are rules, limits and rights.
Right working
Five: coordination, who decides, limits, aspirations, identity.
Do this: Count to five.
Usually costs: 1 mark.
Mistake: Saying a constitution only limits government
Limits remembered most.
Wrong working
A constitution only restricts government.
Right working
It also empowers government to realise aspirations.
Do this: Mention enabling.
Usually costs: 1 mark.
Mistake: Claiming India held a referendum
Wrong example.
Wrong working
India adopted the Constitution through a referendum.
Right working
India held no referendum; people adopted it by abiding by it.
Do this: Link with popular movement.
Usually costs: 1 mark.

Exam tips

Give each function a one-line illustration from India.
For authority, always name the three tests.
Use "constitutes government" for the second function.

Practice questions on The Five Functions of a Constitution and What Gives It Authority

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
Which of the following is NOT one of the five functions of a constitution?
(A) specifying who makes decisions
(B) expressing the fundamental identity of a people
(C) deciding every case in court
(D) limiting the powers of government
Hint
Judges decide cases.
Answer
(C)
Q2 · 2 marks · Very short answerBoard level
State the two reasons why rules must be enforceable. (2 marks)
Hint
Assurance.
Answer
Rules must be enforceable so that people have assurance that others will obey, giving each a reason to obey; enforceability also assures everyone that rule-breakers will be punished.
Q3 · 3 marks · Short answerHarder board level
Explain what the textbook means by a balanced institutional design. (3 marks)
Hint
Checks and balances.
Answer
Well-crafted constitutions fragment power so that small groups cannot subvert them. India divides power among the legislature, executive and judiciary and independent bodies such as the Election Commission, a system of checks and balances. The constitution must also balance core values with flexibility, neither too rigid nor too flexible.
Q4 · 3 marks · Short answerHarder board level
Distinguish the monarchical, single-party and democratic ways of deciding "who decides". (3 marks)
Hint
Three examples.
Answer
In a monarchical constitution a monarch decides; in a single-party system, as in the old Soviet Union, a party decides; in a democratic constitution broadly the people decide, directly or through elected representatives, and the constitution specifies how.
Q5 · 4 marks · Short answerHOTS / competency
The Nepal example shows that written constitutions can fail. Use the five constitutions between 1948 and 1990 and the changes of 2008 and 2015 to explain which test of authority was weak and what changed. (4 marks)
Hint
Granted by king.
Answer
Nepal's constitutions of 1948, 1951, 1959, 1962 and 1990 were all granted by the king, which shows a weak mode of promulgation, since the people had no part. After popular agitation Nepal became a democratic republic in 2008 and adopted a new constitution in 2015, which made the promulgation popular.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.What does the second function specify?Show answer
Who has the power to make decisions.
2.Which countries followed popular movements?Show answer
India, South Africa and the United States.
3.What does a living document mean?Show answer
Core values balanced with flexibility.
4.Which year did Nepal become a republic?Show answer
2008.

The Five Functions of a Constitution and What Gives It Authority: frequently asked questions

Is the British constitution a single document?

No; the United Kingdom has a series of documents and decisions taken together.

What is public enforcement?

Legal enforceability assuring that rule-breakers will be punished.

Does India's citizenship depend on ethnicity?

No; the Constitution does not make ethnic identity a criterion for citizenship.