Why this chapter matters for UPSC: The Indian Constitution is the single most tested topic in UPSC GS2. Every aspect — from the Preamble to Schedule 7 to constitutional bodies — is fair game for both Prelims (MCQs on article numbers, amendments) and Mains (federalism, judicial review, amendment procedure). Mastering this chapter gives you the conceptual backbone for the entire polity syllabus.


PART 1 — Quick Reference Tables

Key Features of the Indian Constitution

FeatureConstitutional ProvisionUPSC Relevance
FederalismArticle 1 (India = Union of States); 7th ScheduleCentre-State relations; GST (101st Amendment)
Parliamentary DemocracyArticles 52–75 (President, PM, Council of Ministers)Westminster model vs Presidential
Separation of PowersLegislature (Parliament), Executive (President/Cabinet), Judiciary (SC + HCs)Not strict like USA; functional separation
Fundamental RightsPart III, Articles 12–35Justiciable; enforced via Article 32 (SC) / 226 (HC)
DPSPPart IV, Articles 36–51Non-justiciable; govern policy
Fundamental DutiesPart IVA, Article 51AAdded 42nd Amendment 1976; 11th duty by 86th Amendment 2002
Independent JudiciaryArticles 124–147Judicial review; Basic Structure Doctrine
SecularismArticles 25–28; "secular" in Preamble (42nd Amendment 1976)No state religion
Universal Adult FranchiseArticle 326Voting age lowered 21→18 by 61st Amendment 1988

7th Schedule — Legislative Lists

ListNumber of SubjectsExamples
Union List97 subjectsDefence, foreign affairs, atomic energy, railways, banking
State List66 subjectsPolice, public health, agriculture, land (note: GST reduced state subjects via 101st Amendment)
Concurrent List47 subjectsEducation, forests, marriage, electricity, criminal law

Fundamental Rights — Part III (Articles 12–35)

RightArticlesKey Points
Right to Equality14–18Equality before law; no discrimination; abolition of untouchability (Art 17); abolition of titles (Art 18)
Right to Freedom19–226 freedoms (Art 19); protection against conviction (Art 20); protection of life/personal liberty (Art 21); right to education 6–14 yrs (Art 21A); protection against arrest (Art 22)
Right Against Exploitation23–24Prohibition of trafficking and forced labour (Art 23); prohibition of child labour in hazardous industries below 14 years (Art 24)
Right to Freedom of Religion25–28Freedom of conscience (Art 25); religious institutions (Art 26); no tax for religion (Art 27); no religious instruction in state-funded schools (Art 28)
Cultural and Educational Rights29–30Protection of minority languages/cultures (Art 29); minorities' right to establish/administer educational institutions (Art 30)
Right to Constitutional Remedies32"Heart and soul of the Constitution" — Dr B.R. Ambedkar; writs: habeas corpus, mandamus, certiorari, prohibition, quo warranto

PART 2 — Detailed Notes

Why We Need a Constitution

Key Term

A Constitution is the supreme law of a country. It defines the nature of the state, sets limits on the exercise of power by the government, guarantees rights to citizens, and provides the framework for governance. Without a Constitution, majority rule can trample minority rights.

India's Constitution was framed by the Constituent Assembly (1946–1949). It was adopted on 26 November 1949 (Constitution Day) and came into force on 26 January 1950 (Republic Day). Dr B.R. Ambedkar chaired the Drafting Committee.

Federalism

UPSC Connect

UPSC GS2 — Centre-State Relations: India is a federal state with a strong unitary bias. The 7th Schedule divides legislative powers into three lists. Parliament can legislate on State List subjects during a National Emergency (Art 352), when Rajya Sabha passes a resolution (Art 249), or when implementing international treaties (Art 253). The 101st Amendment (2017) introduced GST, subsuming several state subjects (e.g., sales tax, octroi) into a concurrent framework governed by the GST Council.

Parliamentary Democracy

The President (Articles 52–62) is the nominal/constitutional head. The Prime Minister (Articles 74–75) is the real executive head. The Council of Ministers is collectively responsible to the Lok Sabha (Article 75). Parliament consists of the Lok Sabha (House of the People) and the Rajya Sabha (Council of States).

Directive Principles of State Policy (Part IV)

Explainer

DPSPs (Articles 36–51) are non-justiciable — they cannot be enforced in courts. But the Supreme Court has held (Minerva Mills, 1980) that FRs and DPSPs must be read harmoniously — neither can be used to destroy the other. DPSPs are classified as:

  • Socialist DPSPs: Equal pay for equal work (Art 39d), right to work (Art 41), maternity relief (Art 42)
  • Gandhian DPSPs: Village panchayats (Art 40), cottage industries (Art 43), prohibition of intoxicants (Art 47)
  • Liberal-Intellectual DPSPs: Uniform Civil Code (Art 44), separation of judiciary from executive (Art 50), international peace (Art 51)

Fundamental Duties (Article 51A)

Added by the 42nd Amendment 1976 (originally 10 duties). The 86th Amendment 2002 added the 11th duty: "It shall be the duty of every citizen who is a parent or guardian to provide opportunities for education to his child or ward between the age of six and fourteen years." Fundamental Duties are non-justiciable but morally binding.

UPSC Connect

UPSC GS2 — Fundamental Duties: The Verma Committee (1999) recommended making Fundamental Duties enforceable. Courts have used Art 51A to uphold laws that might otherwise appear to restrict FRs — if a law promotes a Fundamental Duty, the courts tend to sustain it (e.g., environmental protection laws upheld via Art 51A(g)).

Amendment Procedure (Article 368)

Key Term

Three levels of amendment:

  1. Simple majority (as in ordinary legislation): Admission of new states, creation of new states (Art 2–4), abolition of Legislative Councils
  2. Special majority (2/3 of members present and voting + majority of total membership of each house): Most constitutional provisions
  3. Special majority + ratification by at least half the state legislatures: Federal provisions — election of President, distribution of legislative powers (7th Schedule), representation of states in Parliament, Art 368 itself

Constitutional Bodies

BodyArticleKey Facts
Election Commission324Multi-member since 1989; Chief Election Commissioner removable only by impeachment procedure
Comptroller and Auditor General (CAG)148Audits accounts of Centre and States; reports to Parliament
Finance Commission280Quinquennial; recommends Centre-State tax sharing; 16th FC (2024)
UPSC315Conducts civil services examinations; Chairman removable only by President after SC inquiry
State PSCs315State-level recruitment; joint PSCs possible

Basic Structure Doctrine

UPSC Connect

UPSC GS2 — Judicial Review: In Kesavananda Bharati v. State of Kerala (1973), a 13-judge bench (7:6) held that Parliament can amend the Constitution but cannot destroy its Basic Structure. Elements of Basic Structure include: supremacy of the Constitution, republican and democratic form of government, secular character, separation of powers, federal character, judicial review, free and fair elections, unity and integrity of India. This doctrine has been applied in numerous subsequent cases (Minerva Mills 1980, S.R. Bommai 1994, etc.).

44th Amendment (1978)

The 44th Amendment removed the Right to Property (Articles 19(1)(f) and 31) from the list of Fundamental Rights, converting it into a constitutional/legal right under Article 300A. It also reversed several provisions introduced by the controversial 42nd Amendment (1976) that had tilted power towards the executive.


[Additional] 1a. Constituent Assembly — Composition, Election Method, and Timeline

The chapter mentions the Constituent Assembly only in passing. The Cabinet Mission Plan origin, composition breakdown, election method, and numerical membership are high-frequency Prelims facts absent from the file.

Key Term

Key Terms — Constituent Assembly:

TermMeaning
Cabinet Mission Plan (May 16, 1946)British Cabinet Mission (Pethick-Lawrence, Cripps, A.V. Alexander) proposal that set up the Constituent Assembly framework; members elected indirectly by provincial legislatures, not by adult franchise
Single Transferable Vote (STV)Method used to elect Constituent Assembly members from provincial legislatures; a proportional representation system — not first-past-the-post
Sachidananda SinhaEldest member of the Constituent Assembly; served as provisional President of the very first session (December 9, 1946) until a permanent President was elected
Rajendra PrasadElected permanent President of the Constituent Assembly on December 11, 1946; later became India's first President
Drafting CommitteeSeven-member committee that actually drafted the Constitution text; chaired by Dr B.R. Ambedkar
UPSC Connect

[Additional] Constituent Assembly — Composition, Elections, Timeline (GS2 — Polity):

How the Constituent Assembly came into being:

ParameterDetail
OriginCabinet Mission Plan, May 16, 1946
NatureIndirectly elected — NOT by adult franchise; members elected by provincial legislative assemblies
Voting methodSingle Transferable Vote (STV) / proportional representation within each province
INC seats208 seats (69% of provincial seats)
Muslim League seats73 seats (out of 296 provincial seats); League boycotted initial sessions

Composition (total membership):

CategoryCount
From provinces292
From princely states93
From Chief Commissioner's provinces (Delhi, Ajmer-Merwara, Coorg, British Baluchistan)4
Total (original)389
After Partition (1947)299 (Pakistan's representatives left)

Key dates:

DateEvent
May 16, 1946Cabinet Mission Plan announced — Constituent Assembly framework approved
December 9, 1946First meeting of the Constituent Assembly; 207 members attended; Muslim League boycotted; Dr Sachidananda Sinha (provisional President) presided
December 11, 1946Dr Rajendra Prasad elected permanent President
August 29, 1947Drafting Committee constituted; Dr B.R. Ambedkar elected Chairman
November 26, 1949Constitution adopted — Constitution Day (Samvidhan Divas)
January 24, 1950Last session of the Constituent Assembly; National Anthem and National Song officially adopted
January 26, 1950Constitution came into force — Republic Day

Total duration: 2 years, 11 months, 17 days (NOT 3 years — commonly misstated)

Drafting Committee members (original 7): B.R. Ambedkar (Chair), Alladi Krishnaswami Ayyar, N. Gopalaswami Ayyangar, K.M. Munshi, Syed Mohammad Saadulla, B.L. Mitter (replaced by N. Madhava Rao), D.P. Khaitan (replaced by T.T. Krishnamachari)

UPSC synthesis: Key exam facts: Constituent Assembly established under Cabinet Mission Plan = indirect election by provincial legislatures using STV = 389 original members (292 provincial + 93 princely + 4 Chief Commissioner's) → 299 after Partition; First meeting = December 9, 1946 = provisional President Dr Sachidananda Sinha = 207 members attended; permanent President = Dr Rajendra Prasad (elected Dec 11, 1946); Drafting Committee Chair = Dr B.R. Ambedkar; Constitution adopted = November 26, 1949 (Constitution Day); in force = January 26, 1950 (Republic Day); last session = January 24, 1950; duration = 2 years, 11 months, 17 days. Prelims trap: Constituent Assembly was NOT directly elected by adult franchise (STV via provincial legislatures — indirect); total membership = 389 original / 299 after Partition (NOT 395 or 300); Dr Sachidananda Sinha = provisional President of first session ONLY (Dr Rajendra Prasad = permanent President); Constitution adopted on November 26, 1949 but came into force on January 26, 1950 — two different dates frequently confused; duration = 2 years, 11 months, 17 days (NOT 3 years).

[Additional] 1b. The Preamble — Legal Status, Amendment, and Secularism as Basic Structure

The chapter discusses the Preamble's contents but does not address the critical legal question of whether the Preamble is justiciable/a part of the Constitution — a shift between two SC judgments — nor the limits on amending it.

Key Term

Key Terms — Preamble:

TermMeaning
Berubari Union Case (1960)Supreme Court held the Preamble is NOT a part of the Constitution and cannot be used to interpret constitutional provisions — overruled later
Kesavananda Bharati (1973)SC overruled Berubari; held the Preamble IS a part of the Constitution and can be used for interpretation; however, it does not override plain text of Articles
42nd Amendment (1976)The only amendment to the Preamble; added "socialist," "secular," and "integrity" to the Preamble during the Emergency under PM Indira Gandhi
S.R. Bommai v. Union of India (1994)SC held that secularism is a Basic Structure element; misuse of religion in politics can attract Presidential dismissal of a state government under Article 356
Places of Worship Act 1991Recognised by SC in Ayodhya (2019) judgment as a legislative manifestation of the Constitution's secular commitment — discussed in Ch02
UPSC Connect

[Additional] Preamble — Legal Status, Amendment, and Basic Structure (GS2 — Polity):

Evolution of Preamble's legal status:

CaseYearRuling
Berubari Union Case1960Preamble is NOT a part of the Constitution; cannot be used to interpret provisions
Kesavananda Bharati v. State of Kerala1973Overruled Berubari; Preamble IS part of the Constitution; can be used for interpretation
Current positionPost-1973Preamble is part of the Constitution; used for interpretation but does NOT override clear text of Articles; does not create independent enforceable rights

The Preamble's amendment:

AmendmentYearWhat Changed
42nd Constitutional Amendment1976Added "socialist," "secular," and "integrity" to the Preamble (during Emergency, PM Indira Gandhi)
All other amendmentsPreamble has been amended only ONCE — by the 42nd Amendment

Can the Preamble be amended?

  • Yes — Parliament can amend the Preamble under Article 368
  • BUT the amendment must not destroy the Basic Structure
  • The 42nd Amendment additions (socialist, secular, integrity) were upheld as valid — they do not violate the Basic Structure

Secularism in the Preamble — current legal status:

  • Inserted by 42nd Amendment 1976
  • S.R. Bommai (1994): Secularism = Basic Structure element; a state government that misuses religion can face President's Rule under Article 356
  • Ayodhya Judgment (2019): SC recognised the Places of Worship Act 1991 as a constitutional manifestation of secularism; the Act freezes the religious character of all places of worship as of August 15, 1947

"We, the People of India" — significance:

  • Phrase signifies popular sovereignty — the Constitution draws its authority from the people, not from Parliament or the Crown
  • Does NOT mean the Constitution was ratified by a referendum (it was not)
  • The Constituent Assembly acted as the representative of the people

UPSC synthesis: Key exam facts: Preamble legal status = Berubari (1960) said NOT part of Constitution → Kesavananda (1973) overruled Berubari → Preamble IS part of Constitution (current position); Preamble amended only once = 42nd Amendment 1976 = added "socialist," "secular," "integrity"; secularism = Basic Structure (S.R. Bommai 1994); Preamble can be amended but cannot destroy Basic Structure. Prelims trap: "Preamble is not part of the Constitution" = Berubari (1960) view, overruled by Kesavananda (1973) — current position is opposite; Preamble amended only once (42nd Amendment 1976) — NOT by the 44th Amendment (44th restored right to property as legal right, removed from FR); correct order in Preamble = "Sovereign Socialist Secular Democratic Republic" (secular comes between socialist and democratic); Preamble cannot create independent enforceable rights even though it is part of the Constitution.

Exam Strategy

Prelims traps:

  • The 42nd Amendment (1976) added "socialist," "secular," and "integrity" to the Preamble — not the original 1950 text
  • Article 32 = SC writs (only for FR violation); Article 226 = HC writs (for any legal right, not just FRs — HC jurisdiction is broader)
  • Article 21A (Right to Education, 6–14 years) was added by 86th Amendment 2002, not by the original Constitution
  • Voting age was lowered from 21 to 18 by the 61st Amendment 1988, not the 42nd
  • The State List originally had 66 subjects; this has been reduced by the 101st Amendment (GST)
  • Rajya Sabha has 250 members maximum (238 elected + 12 nominated); current strength is 245

Mains angles:

  • Critically examine the Basic Structure Doctrine — is it a judicial overreach or essential safeguard?
  • DPSP vs Fundamental Rights conflict — evolution from State of Madras v. Champakam (1951) to Minerva Mills (1980)
  • Cooperative federalism and the GST Council as a constitutional innovation

Practice Questions

Prelims:

  1. The power of the Supreme Court of India to decide disputes between the Centre and the States falls under its:
    (a) Advisory jurisdiction
    (b) Appellate jurisdiction
    (c) Original jurisdiction
    (d) Writ jurisdiction

  2. Which of the following is/are included in the Basic Structure of the Indian Constitution as per the Kesavananda Bharati judgment?

    1. Supremacy of the Constitution
    2. Secular character of the Constitution
    3. Federal character of the Constitution
      (d) All of the above
      (CSE Prelims 2021 pattern)

Mains:

  1. "The Directive Principles of State Policy (DPSP) and Fundamental Rights are complementary and supplementary to each other." Examine this statement with reference to the Supreme Court's evolving jurisprudence. (CSE Mains 2022, GS Paper 2, 15 marks)

  2. Discuss the significance of the Basic Structure Doctrine in protecting the democratic character of the Indian Constitution. (CSE Mains 2020, GS Paper 2, 15 marks)