Salient Features of Indian Constitution – NDA Polity Notes

India is a democracy governed by rules. Those rules are not found in any ordinary law. They are found in a single document: the Constitution of India. The Constitution is the highest law of the land. Every other law, every government decision, every action of Parliament must conform to it. Nothing stands above it.

This chapter explains what the Indian Constitution is, how it was made, where it drew its ideas from, what kind of document it is, what its basic features are, how it is organised, and what limits exist on changing it. These are the foundational ideas that support everything else you will study in Polity.

For NDA, this chapter is consistently tested. Questions focus on the nature of the Constitution, its basic features, what the Constitution does and does not do, the Parts of the Constitution, and the two critical dates NDA also tests knowledge through negation, asking which option is NOT a feature or NOT a function. Pay attention to that pattern throughout this chapter.

1. The Constituent Assembly:  How the Constitution Was Made

India did not import its Constitution. A specially formed body called the Constituent Assembly wrote it from scratch, debating every clause carefully over nearly three years.

The Constituent Assembly was established in 1946 under the Cabinet Mission Plan. It had 299 members. The Assembly was presided over by Dr. Rajendra Prasad as its President. The critical work of actually drafting the document was done by the Drafting Committee, chaired by Dr. B.R. Ambedkar. Ambedkar’s intellectual leadership in shaping the text earned him the title Father of the Indian Constitution.

The Assembly took 2 years, 11 months, and 17 days to complete the Constitution. It adopted the Constitution on 26 November 1949. India became a Republic on 26 January 1950, when the Constitution came fully into force. That date is celebrated as Republic Day.

★ IMPORTANT  The Constituent Assembly:  299 members, Dr. Rajendra Prasad (President), Dr. B.R. Ambedkar (Drafting Committee Chair), 2 years 11 months 17 days:  adopted the Constitution on 26 November 1949.

2. Sources of the Indian Constitution

The Constituent Assembly did not write the Constitution in isolation. It studied constitutions from around the world and borrowed the best ideas from each. The result is a document that reflects both India’s own traditions and global constitutional wisdom.

Country / Source	Feature Borrowed
United Kingdom	Parliamentary system of government; Rule of law; Single citizenship; Cabinet system; Writs
United States of America	Fundamental Rights; Judicial Review; Independent judiciary; Preamble; Impeachment of President
Ireland	Directive Principles of State Policy (DPSP); Method of election of President; Nomination of members to Rajya Sabha
Australia	Concurrent List; Freedom of trade and commerce; Joint sitting of Parliament
South Africa	Procedure for amendment of the Constitution
Germany (Weimar Constitution)	Suspension of Fundamental Rights during Emergency
Government of India Act 1935	Federal structure; Governor; Emergency provisions; Public Service Commission; Judiciary

★ IMPORTANT  The Constitution is a thoughtful blend of global constitutional wisdom:  not a copy of any single country’s system.

3. The Preamble

Every building has a foundation stone that tells you what it stands for. The Preamble is that foundation stone for the Indian Constitution. It is a brief introductory statement that declares the values and goals the Constitution is built on.

The Preamble declares India to be a Sovereign, Socialist, Secular, Democratic Republic. It commits the nation to securing for all its citizens: Justice (social, economic, political), Liberty (of thought, expression, belief, faith, worship), Equality (of status and opportunity), and Fraternity (assuring individual dignity and national unity).

Two words in the Preamble were not in the original 1950 text: “Socialist” and “Secular”. They were added by the 42nd Constitutional Amendment in 1976.

The Preamble is not enforceable as a standalone legal document. A citizen cannot go to court solely on the basis of the Preamble. However, it serves as an essential guide to constitutional interpretation. When judges interpret the Constitution, they look to the Preamble to understand the spirit and purpose behind its provisions. The Supreme Court confirmed this role in the Kesavananda Bharati case (1973), which also held that the Preamble is part of the Constitution.

★ IMPORTANT  The Preamble = India’s constitutional identity statement. “Socialist” and “Secular” added in 1976 by the 42nd Amendment. Not enforceable alone, but essential for constitutional interpretation.

4. Nature and Character of the Constitution

Before you study what the Constitution contains, you need to understand what kind of document it is. Three qualities define its character: it is liberal, it is written, and it is supreme.

A Liberal Constitution

The Constitution of India is a liberal Constitution. But what does “liberal” mean here? It does not simply mean that the Constitution grants Fundamental Rights. A liberal constitution is one that is built on an entire value framework: rule of law, limited government, separation of powers, and protection of individual freedom from arbitrary state action. Fundamental Rights are one expression of this liberalism. They are evidence of it. But they are not the complete explanation. [NDA 2010-I]

Students often conclude: “The Constitution is liberal because it has Fundamental Rights.” That conclusion is incomplete. The correct understanding is that the Constitution is liberal because of its entire commitment to individual dignity, equality, freedom, and limited government, of which Fundamental Rights form one part.

★ IMPORTANT  Liberal constitution = entire value framework of limited government, rule of law, and individual freedoms:  not just Fundamental Rights alone.  [NDA 2010-I]

A Written and Codified Constitution

The Indian Constitution is a written, codified document. Every provision is written down in a single document. This distinguishes India from the United Kingdom, which has no single written constitutional document. Because India’s Constitution is written, it is possible to clearly identify what is constitutional and what is not.

The Indian Constitution is the lengthiest written constitution in the world. Originally it had 395 Articles, 8 Schedules, and 22 Parts. It now has over 450 Articles and 12 Schedules after numerous amendments. Its length reflects the detail with which it governs India’s diverse and complex federal system.

The Supreme Law of the Land

The Constitution is the supreme law of the land. All laws enacted by Parliament and State Legislatures must conform to the Constitution. Any law that is inconsistent with the Constitution is void to the extent of the inconsistency. This principle is called Constitutional Supremacy. [NDA 2021-II]

It is important to understand that the Constitution does not establish judicial supremacy. The judiciary (including the Supreme Court) is not above the Constitution. The Supreme Court is empowered to interpret the Constitution and strike down laws that violate it. But this power comes from the Constitution. The Court acts under the Constitution’s authority. It does not stand above it. The Constitution is supreme; the judiciary is its guardian, not its superior. [NDA 2021-II]

Salient Features:  The Full Picture

Beyond liberal, written, and supreme, the Indian Constitution has several other defining features worth knowing:

Feature	What It Means
Blend of Rigidity and Flexibility	Some provisions need a special majority to amend (rigid); others need only a simple majority (flexible). Both modes exist in the same Constitution.
Quasi-Federal with Unitary Bias	India has a federal structure (Centre and States share powers), but in a crisis, power tilts strongly toward the Centre.
Parliamentary System	The executive (Council of Ministers) is drawn from and accountable to the legislature. Borrowed from the UK model.
Independent Judiciary with Judicial Review	Courts can strike down any law (Parliamentary or State) that violates the Constitution. The judiciary is independent of executive control.
Universal Adult Franchise	Every citizen aged 18 and above can vote, regardless of religion, caste, gender, or economic status.
Single Citizenship	All Indians are citizens of India, not of any State. There is no separate State citizenship.
Emergency Provisions	The Constitution provides for three types of emergency, allowing the Centre to assume extraordinary powers when needed.
Constitutional Government	India is governed by the Constitution, not by decree, personal rule, or executive whim.

★ IMPORTANT  The Constitution is liberal, written, supreme, quasi-federal, parliamentary, and the longest written constitution in the world.

5. Basic Features of the Constitution

Some features of the Constitution are so fundamental that they define what the Constitution is. Remove them and the Constitution ceases to be itself. These are called the basic features. Understanding which concepts are basic features (and which are not) is directly tested by NDA.

Confirmed Basic Features

The Constitution of India has several confirmed basic features. Three of these are most important for NDA: [NDA 2015-I]

• Fundamental Rights:  guaranteed to every citizen against arbitrary state action
• Independence of the Judiciary:  the judiciary is free from executive and legislative interference
• Federalism:  powers are distributed between the Union and the States by the Constitution itself

These are not the only basic features. The Supreme Court has identified a broader set over time, including secularism, democratic republican character, rule of law, separation of powers, judicial review, free and fair elections, and unity and integrity of the nation. For NDA, the three above are the most directly tested.

The Confirmed Non-Basic Feature:  Amendment Power

NDA 2015-I directly tested one concept as NOT a basic feature: the unquestioned right of Parliament to amend any part of the Constitution. [NDA 2015-I]

Under Article 368, Parliament has the power to amend the Constitution. But this power is not unlimited. Students often assume Parliament can change anything it wants through a constitutional amendment. This is incorrect. The Supreme Court’s landmark judgment in Kesavananda Bharati v. State of Kerala (1973) held that Parliament cannot alter or destroy the basic structure of the Constitution, even through a valid constitutional amendment.

Parliament can add new provisions, modify existing articles, and reorganise the Constitution’s structure. But it cannot remove Fundamental Rights, abolish federalism, destroy the independence of the judiciary, or eliminate the democratic republican character of the polity. These fall within the basic structure and are beyond Parliament’s reach.

Parliamentary Sovereignty vs Constitutional Supremacy

This comparison is frequently implied in NDA questions. It is essential to understand clearly.

Dimension	Parliamentary Sovereignty (UK Model)	Constitutional Supremacy (Indian Model)
Definition	Parliament can make or unmake any law. No higher law overrides it.	The Constitution is the highest law. All laws (including constitutional amendments) must conform to it.
Court Power	Courts cannot strike down Acts of Parliament.	Courts can invalidate any law or amendment that violates the Constitution.
Amendment	No distinction between ordinary law and constitutional law.	Constitutional amendments must follow a special procedure and cannot alter the basic structure.
Limit on Parliament	None:  Parliament is supreme.	The Basic Structure Doctrine limits Parliament’s constituent power.
India’s Position	—	India follows constitutional supremacy, not parliamentary sovereignty.

★ IMPORTANT  Parliamentary sovereignty = Parliament above all. Constitutional supremacy = Constitution above all. India follows constitutional supremacy. Parliament’s amendment power is real but not unlimited.

6. Functions of the Constitution

A constitution is not just a legal document. It is also a design document. It decides how the country will be governed. Understanding what the Constitution actually does helps you answer NDA’s negation-style questions: “Which of the following is NOT a function of the Constitution?”

What the Constitution Does

The Constitution of India performs four essential functions: [NDA 2021-II]

Function	What It Means
Provides Basic Rules	Lays down the fundamental rules that govern political life in India. These rules bind everyone: citizens and governments alike.
Specifies Powers of Government Organs	Clearly defines what the Legislature, the Executive, and the Judiciary can and cannot do.
Supreme Law of the Land	Governs all other laws. Every law enacted by Parliament or a State Legislature must conform to the Constitution.
Creates Conditions for a Just Society	Through Directive Principles of State Policy and Fundamental Rights, the Constitution builds the framework for social, economic, and political justice.

What the Constitution Does NOT Do

The Constitution creates a framework for governance. It does not guarantee the participation of good people in politics. [NDA 2021-II]

The Constitution sets rules for who can participate in the political system, how elections are conducted, and what offices exist. But it cannot and does not guarantee that those who occupy those offices will be morally upright. Constitutions govern structure and power, not the character of individuals. This distinction has been directly tested by NDA.

★ IMPORTANT  Constitution = sets rules for governance + defines organ powers + guarantees rights + builds conditions for justice. It does NOT guarantee the moral quality of political participants.  [NDA 2021-II]

7. Structure of the Constitution:  Parts

The Indian Constitution is organised into Parts. Each Part covers a distinct area of governance. NDA 2026-I directly tested knowledge of specific Part numbers and their subject matter, a pattern that is expected to recur.

The Constitution originally had 22 Parts. Additional Parts have been inserted through amendments. Below is the complete reference table. Pay special attention to Parts IX-A, IX-B, X, XI, and XII, as these are the most commonly confused.

Part	Subject Matter
Part I	The Union and its Territory
Part II	Citizenship
Part III	Fundamental Rights
Part IV	Directive Principles of State Policy
Part IV-A	Fundamental Duties (added by 42nd Amendment, 1976)
Part V	The Union Government
Part VI	The State Governments
Part VII	States in Part B of the First Schedule (now repealed)
Part VIII	Union Territories
Part IX	The Panchayats (added by 73rd Amendment, 1992)
Part IX-A	The Municipalities (added by 74th Amendment, 1992)  ★  [NDA 2026-I]
Part IX-B	The Co-operative Societies (added by 97th Amendment, 2011)  ★  [NDA 2026-I]
Part X	The Scheduled and Tribal Areas  ★  [NDA 2026-I]
Part XI	Relations between the Union and the States
Part XII	Finance, Property, Contracts and Suits  ★  [NDA 2026-I]
Part XIII	Trade, Commerce, and Intercourse within India
Part XIV	Services under the Union and the States
Part XIV-A	Tribunals
Part XV	Elections
Part XVI	Special Provisions relating to certain classes
Part XVII	Official Language
Part XVIII	Emergency Provisions
Part XIX	Miscellaneous
Part XX	Amendment of the Constitution
Part XXI	Temporary, Transitional, and Special Provisions
Part XXII	Short Title, Commencement, Authoritative Text in Hindi, and Repeals

Critical distinction:  Part X vs Part XI: Part X deals with Scheduled and Tribal Areas. Part XI deals with Relations between the Union and the States. These two are directly confused by students. NDA 2026-I tested this exact distinction. Part X is not about Union-State relations. That is Part XI. [NDA 2026-I]

★ IMPORTANT  Know Part numbers by their subject matter. Part X = Scheduled and Tribal Areas. Part XI = Union-State Relations. Part IX-A = Municipalities. Part IX-B = Co-operative Societies.  [NDA 2026-I]

8. Schedules of the Constitution

The Constitution also contains Schedules: these are annexures at the end that list specific information too detailed to place in the main Articles. The Constitution originally had 8 Schedules. It now has 12.

Schedule	Subject Matter
1st Schedule	Names of States and Union Territories and their territories
2nd Schedule	Provisions relating to emoluments, allowances, and privileges of constitutional officeholders
3rd Schedule	Forms of Oaths and Affirmations
4th Schedule	Allocation of seats in the Rajya Sabha
5th Schedule	Provisions relating to the administration and control of Scheduled Areas and Scheduled Tribes
6th Schedule	Provisions relating to the administration of Tribal Areas in the North-East
7th Schedule	Union List, State List, and Concurrent List
8th Schedule	Languages recognised by the Constitution (currently 22 languages)
9th Schedule	Acts and Regulations protected from judicial scrutiny (added by 1st Amendment, 1951)
10th Schedule	Anti-Defection Law (added by 52nd Amendment, 1985)
11th Schedule	Powers and functions of Panchayats (added by 73rd Amendment, 1992)
12th Schedule	Powers and functions of Municipalities (added by 74th Amendment, 1992)

★ IMPORTANT  8 original Schedules → now 12. The 7th Schedule contains the three Lists (Union, State, Concurrent). The 8th Schedule lists 22 recognised languages. The 10th Schedule is the Anti-Defection Law.

9. Two Critical Dates:  Adoption and Commencement

Students often treat 26 November 1949 and 26 January 1950 as interchangeable. They are not. Each date has a distinct legal meaning, and NDA has tested the difference directly.

The Constituent Assembly adopted the Constitution on 26 November 1949. Adoption means the Assembly formally approved the final text. However, most provisions of the Constitution did not come into operation on that day.

Only three clusters of provisions came into force on 26 November 1949: [NDA 2018-I]

★ IMPORTANT  Provisions in force from 26 November 1949: Citizenship · Elections · Appointment of Judges of the Supreme Court and High Courts

The remaining provisions (including Fundamental Rights, Directive Principles, Emergency Provisions, and all other parts of the Constitution) came into force on 26 January 1950. On that date, India formally became a sovereign democratic republic. That is why 26 January is celebrated as Republic Day.

26 November is now observed as Constitution Day (Samvidhan Divas), commemorating the adoption of the Constitution. This observance began in 2015.

Dimension	26 November 1949	26 January 1950
Event	Constitution adopted by Constituent Assembly	Constitution came fully into force
Provisions in Force	Citizenship, Elections, Appointment of Judges of SC and HCs	All remaining provisions including Emergency, DPSP, Fundamental Rights
India’s Status	Still a Dominion	Became a sovereign democratic republic
Significance Today	Constitution Day (Samvidhan Divas):  observed since 2015	Republic Day:  celebrated every year

Critical trap: Emergency provisions did not come into force on 26 November 1949. They became operative on 26 January 1950 with the rest of the Constitution. [NDA 2018-I]

★ IMPORTANT  26 November 1949 = Constitution adopted. Only Citizenship, Elections, and Judicial Appointments came into force. Everything else:  including Emergency provisions:  came on 26 January 1950.  [NDA 2018-I]

10. Amendment of the Constitution

The Constitution is a living document. It can be amended to adapt to changing times. But the power to amend is not without limits.

The power to amend the Constitution is given by Article 368. Parliament exercises this constituent power. But the power is not unlimited. It is subject to the Basic Structure Doctrine.

There are three methods of amendment in India, depending on how significant the change is:

Method	Requirement	Used For
Simple Majority	More than half of members present and voting	Ordinary legislative matters:  admission of new States, creation of new States
Special Majority	Two-thirds of members present and voting + majority of total membership of each House	Most constitutional amendments under Article 368
Special Majority + State Ratification	Two-thirds majority in Parliament + ratification by at least half the State Legislatures	Provisions affecting federal structure:  election of President, Supreme Court, distribution of legislative powers

The Basic Structure Doctrine

The most important limit on Parliament’s amendment power is the Basic Structure Doctrine, established by the Supreme Court in Kesavananda Bharati v. State of Kerala (1973). The Court held, by a majority of 7 to 6, that while Parliament has wide power to amend the Constitution, it cannot alter, damage, or destroy the basic structure of the Constitution.

The elements of the basic structure include: Fundamental Rights, supremacy of the Constitution, republican and democratic form of government, secular character, federalism, independence of the judiciary, rule of law, separation of powers, and judicial review. These are beyond Parliament’s reach, even through a constitutional amendment passed by the required majority.

This is why the unquestioned right of Parliament to amend any part of the Constitution is not a basic feature, because Parliament’s own amendment power is constrained by the basic structure. An unlimited amendment power would contradict the basic structure doctrine, not support it. [NDA 2015-I]

★ IMPORTANT: Article 368 gives Parliament the power to amend the Constitution. But the Basic Structure Doctrine (Kesavananda Bharati, 1973) places firm limits. Parliament cannot destroy the Constitution’s essential character.  [NDA 2015-I]

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