Contemporary Constitutional Developments for UPSC

Polity · GS Paper II · Prelims + Mains

Contemporary Constitutional
Developments for UPSC:
Amendments, Laws & Reforms

The Constitution is a living document — and the last decade has reshaped it fast. From the GST (101st) and Women's Reservation (106th) amendments to the three new criminal laws, the Waqf Amendment 2025, and the pending One Nation One Election bill, this guide covers every major development with facts, examples and probable questions for Prelims and Mains.

📜 Amendments 101st–106th
⚖️ New Laws BNS · DPDP · Waqf
🗳️ Pending ONOE · UCC
🎯 Use For Pre + Mains
📅 Published: July 2026 🏛 Subject: Indian Polity ✍️ By: Legacy IAS 🔄 Updated: July 2026

"Contemporary constitutional developments" is one of the most dynamic and high-scoring areas of UPSC Polity. It sits where the static Constitution meets live current affairs — recent amendments, landmark new laws, federalism flashpoints, and big reforms still on the table. Because these topics are debated in Parliament, tested in the Supreme Court, and reported daily, UPSC finds it easy to frame both a factual Prelims MCQ and an analytical Mains question from the same development.

This guide is organised into four parts — (A) Recent Constitutional Amendments (101st–106th), (B) Landmark New Laws, (C) Federalism & Institutional Developments, and (D) Big Reforms on the Table — with facts, examples, and probable questions throughout.

📌 Why This Topic Is a Goldmine

Each development touches multiple parts of the syllabus at once. The Women's Reservation Act links representation, delimitation and gender justice; the Waqf Amendment links Articles 25–26, minority rights and federalism; One Nation One Election links the basic structure, federalism and electoral reform. That overlap is exactly what examiners look for.

How UPSC Asks About Constitutional Developments (2025–2026 Trend)

Polity contributes roughly 14–15 questions in Prelims each year, and current constitutional developments are a reliable slice of them. Recent cycles show four framing patterns:

  • Amendment-fact MCQs (Prelims): which Article a recent amendment inserted (e.g. GST → Art. 246A/279A; EWS → Art. 15(6)/16(6); Women's Reservation → Art. 330A/332A).
  • New-law feature MCQs (Prelims): what the three new criminal laws replaced, or the composition of the CEC appointment committee.
  • Recent-verdict MCQs (Prelims): the Article 370 verdict, the Waqf Amendment interim order, the Tamil Nadu Governor case.
  • Analytical questions (Mains GS-II): simultaneous elections and federalism; the Uniform Civil Code debate; minority rights and the Waqf reform.
Prep tip: For every development, lock in four things — the year, the Article/law involved, the core change, and the debate around it (pros/cons or the court challenge). That covers both a Prelims fact and a Mains argument.

Quick Reference — Key Developments at a Glance

DevelopmentYearWhat It Does
97th Amendment — Cooperatives2011Part IX-B, Art. 43B (partly struck down in 2021)
99th Amendment — NJAC2014Judicial appointments body — struck down in 2015
100th Amendment — LBA2015India–Bangladesh Land Boundary Agreement; enclave exchange
101st Amendment — GST2016Art. 246A, 269A, 279A (GST Council); "one nation, one tax"
102nd Amendment — NCBC2018Constitutional status to NCBC (Art. 338B, 342A)
103rd Amendment — EWS201910% reservation for EWS (Art. 15(6), 16(6))
104th Amendment2019Extended SC/ST legislative reservation; ended Anglo-Indian nomination
105th Amendment — OBC lists2021Restored States' power to identify SEBCs/OBCs
106th Amendment — Women's Reservation202333% seats for women in Lok Sabha & Assemblies (Art. 330A, 332A)
3 New Criminal Laws (BNS/BNSS/BSA)2023/24Replaced IPC, CrPC, Evidence Act (from 1 July 2024)
Digital Personal Data Protection Act2023Data protection law flowing from the privacy verdict
CEC & Other ECs Act2023New selection committee for Election Commission appointments
Telecommunications Act2023Replaced the Telegraph Act, 1885; spectrum & security powers
Jan Vishwas Act2023Decriminalised ~183 provisions; ease of doing business
Forest (Conservation) Amendment2023Exemptions from forest clearance; "forest" definition debate
CAA — Rules notified2019/2024Fast-track citizenship for six communities from 3 nations
Anti-defection — Maharashtra ruling2023Political party vs legislature party; whip; Speaker's role
Abrogation of Article 3702019Ended J&K special status; upheld by SC in 2023
Waqf (Amendment)/UMEED Act2025Overhaul of waqf governance; partly stayed by SC (Sept 2025)
One Nation One Election (129th Amdt Bill)2024–Proposes simultaneous LS & Assembly polls (Art. 82A); before JPC
Uniform Civil Code (Uttarakhand)2024/25First state UCC; Article 44 in action

Part A — Recent Constitutional Amendments (101st to 106th)

101st Amendment (2016) — Goods and Services Tax (GST)

What Changed

Introduced a nationwide Goods and Services Tax, subsuming most indirect taxes. It inserted Article 246A (concurrent power of the Union and States to tax goods and services), Article 269A (IGST on inter-state trade) and Article 279A (the GST Council, a federal body chaired by the Union Finance Minister).

Significance

The biggest indirect-tax reform since Independence — "one nation, one tax." The GST Council is a landmark example of cooperative (and "fiscal") federalism.

Exam angle: Note that GST Council decisions are recommendatory (Mohit Minerals case, 2022) — neither Union nor States are strictly bound. A favourite MCQ nuance.

102nd Amendment (2018) — Constitutional Status to the NCBC

What Changed

Gave constitutional status to the National Commission for Backward Classes (NCBC) by inserting Article 338B, and added Article 342A (the President notifies socially and educationally backward classes) and Article 366(26C).

Significance

Elevated the NCBC to the level of the SC/ST commissions. Its interpretation later triggered the 105th Amendment (below), after the Maratha-reservation ruling read it as taking away the States' power to identify backward classes.

103rd Amendment (2019) — 10% EWS Reservation

What Changed

Provided up to 10% reservation for the Economically Weaker Sections (EWS) among citizens not already covered by SC/ST/OBC quotas, by inserting Articles 15(6) and 16(6).

The Court Test

Upheld by the Supreme Court in Janhit Abhiyan v. Union of India (2022) by a 3:2 majority. The Court held that economic criteria alone can be a valid basis for reservation, and that breaching the 50% ceiling for EWS (a separate category) does not violate the basic structure.

Exam angle: A rare instance where the Indra Sawhney 50% ceiling was crossed with judicial approval — link it to reservation jurisprudence in Mains.

104th Amendment (2019) — SC/ST Reservation & Anglo-Indians

What Changed

Two things: it extended the reservation of seats for SCs and STs in the Lok Sabha and State Assemblies by ten more years (to 2030), and it ended the provision for nominating Anglo-Indian members to the Lok Sabha and State Assemblies.

Significance

A common Prelims fact: after this amendment, no Anglo-Indians are nominated to the legislatures. (Reservation of seats for SC/ST is periodically extended; representation via nomination for Anglo-Indians has ended.)

105th Amendment (2021) — States' Power Over OBC Lists

What Changed

Restored the power of States and Union Territories to prepare and maintain their own lists of Socially and Educationally Backward Classes (SEBCs/OBCs).

Background

It was a direct response to the Supreme Court's Maratha-reservation ruling (Jaishri Laxmanrao Patil, 2021), which had interpreted the 102nd Amendment as vesting that power solely in the Union. The 105th Amendment clarified that States retain it.

Exam angle: A textbook example of legislative response to a judicial interpretation — great for a Mains point on legislature–judiciary dynamics.

106th Amendment (2023) — Nari Shakti Vandan Adhiniyam (Women's Reservation)

What Changed

Provides 33% reservation for women in the Lok Sabha, State Legislative Assemblies and the Delhi Assembly, by inserting Articles 330A, 332A and 334A. Seats reserved for women are to rotate, and the reservation is to last 15 years (extendable).

The Catch

It is not yet operational — it will take effect only after a delimitation exercise based on the first census conducted after the Amendment's commencement. This links it directly to the census and delimitation timeline.

Very high yield: UPSC loves the conditionality — "reservation contingent on census + delimitation." Also note it extends to SC/ST women within the existing SC/ST reserved seats.

Three Earlier Amendments You Must Not Miss (97th, 99th, 100th)

These pre-2016 amendments remain frequently tested because of their landmark subject-matter and, in one case, a dramatic court verdict.

97th Amendment (2011) — Cooperative Societies

What Changed

Made forming cooperative societies a fundamental right (added to Article 19(1)(c)), inserted a Directive Principle (Article 43B — promotion of cooperatives) and a new Part IX-B on the incorporation and regulation of cooperative societies.

The Twist

In Union of India v. Rajendra N. Shah (2021), the Supreme Court struck down Part IX-B insofar as it applied to State cooperative societies, holding that cooperatives are a State subject (Entry 32, List II) and the amendment lacked the required ratification by States. Part IX-B survives only for multi-state cooperatives.

Exam angle: A rare case of a constitutional amendment being partly struck down for want of State ratification under Article 368 — a federalism gem.

99th Amendment (2014) — NJAC (Struck Down)

What Changed

Created the National Judicial Appointments Commission (NJAC) to replace the collegium system for appointing judges to the higher judiciary (via Articles 124A–124C).

The Verdict

In the NJAC / Fourth Judges Case (2015), a five-judge bench struck down the 99th Amendment and the NJAC Act by 4:1, holding that they violated the independence of the judiciary — part of the basic structure — and restored the collegium.

High yield: The most cited modern use of the Basic Structure Doctrine; keeps the collegium-vs-executive debate alive to this day.

100th Amendment (2015) — India–Bangladesh Land Boundary Agreement

What Changed

Gave effect to the Land Boundary Agreement (LBA) with Bangladesh, enabling the exchange of enclaves and adverse possessions and updating the First Schedule (territories of Assam, West Bengal, Meghalaya, Tripura).

Significance

A textbook application of the Berubari principle — ceding/acquiring territory requires a constitutional amendment. It resolved a decades-old boundary problem and improved India–Bangladesh relations.

Part B — Landmark New Laws

The Three New Criminal Laws — BNS, BNSS & BSA (2023, effective 1 July 2024)

What Changed

India's colonial-era criminal codes were replaced by three new laws that came into force on 1 July 2024:

  • Bharatiya Nyaya Sanhita (BNS), 2023 — replaces the Indian Penal Code, 1860.
  • Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023 — replaces the Code of Criminal Procedure (CrPC), 1973.
  • Bharatiya Sakshya Adhiniyam (BSA), 2023 — replaces the Indian Evidence Act, 1872.

Key Features

Statutory Zero FIR and e-FIR; mandatory forensic investigation for offences punishable with 7+ years; trial in absentia for proclaimed offenders; community service as a punishment; new provisions on terrorism and organised crime; and the replacement of "sedition" with an offence for acts endangering the sovereignty, unity and integrity of India. The reforms emphasise timelines and technology ("Timeline + Tech = Trust").

Exam angle: Memorise the pairings (BNS→IPC, BNSS→CrPC, BSA→Evidence Act) and the 1 July 2024 date — classic Prelims matching material.

Digital Personal Data Protection (DPDP) Act, 2023

What Changed

India's first comprehensive data protection law, giving effect to the fundamental right to privacy recognised in Puttaswamy (2017). It creates the roles of Data Principal (the individual) and Data Fiduciary (the entity processing data), requires consent, provides rights (access, correction, erasure), and sets up a Data Protection Board of India to adjudicate breaches.

Significance

The statutory backbone of the digital-privacy regime — a direct legislative follow-through on a landmark judgment.

Chief Election Commissioner and Other ECs Act, 2023

What Changed

Enacted after the Supreme Court's Anoop Baranwal (2023) ruling, it lays down the selection committee for appointing the CEC and Election Commissioners — the Prime Minister, a Union Cabinet Minister, and the Leader of the Opposition in the Lok Sabha.

The Debate

The Court's interim formula had included the Chief Justice of India; the Act replaced the CJI with a Union Cabinet Minister, prompting criticism about executive dominance over the poll body. A live GS-II debate on the independence of the Election Commission.

Waqf (Amendment) Act, 2025 — the "UMEED" Act

What Changed

A sweeping overhaul of the Waqf Act, 1995, renamed the Unified Waqf Management, Empowerment, Efficiency and Development (UMEED) Act. Key changes: removal of "waqf by user" for future properties, mandatory registration, greater role for the Collector in disputes, and inclusion of non-Muslim and women members on the Central Waqf Council and State Waqf Boards.

The Court Challenge

Over 65 petitions challenged the Act (Articles 25, 26, 14, 300A). On 15 September 2025, in In re: Waqf (Amendment) Act 2025, the Supreme Court declined to stay the whole Act (presumption of constitutionality), but stayed a few provisions — including the requirement that a person prove five years' practice of Islam to create a waqf, and part of the rule letting the executive decide disputed government property. It also capped non-Muslim members (≤4 on the Central Council, ≤3 on State Boards).

Very high yield & sensitive: For Mains, explain the change precisely and weigh both sides — reform/transparency vs minority autonomy under Articles 25–26 — without taking a partisan position.

Telecommunications Act, 2023

What Changed

Replaced the colonial Indian Telegraph Act, 1885 and the Wireless Telegraphy Act, 1933. It provides for administrative (not auction) allocation of satellite spectrum, a simplified authorisation regime, strong interception and suspension powers for the government on grounds of national security/public order, and a right-of-way framework.

The Debate

Praised for modernising the sector, but criticised for wide surveillance powers that intersect with the right to privacy (Puttaswamy) — a GS-II/GS-III overlap (governance + internal security).

Jan Vishwas (Amendment of Provisions) Act, 2023

What Changed

A decriminalisation law that amended around 183 provisions across 42 Central Acts, converting many minor offences into civil penalties to improve the ease of doing business and reduce the burden on courts.

Significance

A key governance-reform example — "trust-based governance" and reducing over-criminalisation of ordinary business conduct.

Forest (Conservation) Amendment Act, 2023 — Van (Sanrakshan Evam Samvardhan) Adhiniyam

What Changed

Amended the Forest (Conservation) Act, 1980. It exempts certain categories of land (e.g. land near international borders for strategic projects, small parcels for public utilities) from forest-clearance requirements, aiming to balance development with conservation.

The Debate

Critics argued it dilutes the Supreme Court's expansive Godavarman (1996) definition of "forest." In response, the Court (2024) directed that the broad dictionary meaning of "forest" continue to apply pending state records — a live GS-III (environment) issue.

Citizenship (Amendment) Act, 2019 & the 2024 Rules

What Changed

The CAA offers a fast-tracked path to Indian citizenship for Hindus, Sikhs, Buddhists, Jains, Parsis and Christians who fled religious persecution from Afghanistan, Pakistan and Bangladesh and entered India on or before 31 December 2014. The implementing Rules were notified in March 2024, operationalising the law.

The Debate

Supporters frame it as humanitarian refuge for persecuted minorities; critics argue that linking citizenship to religion raises questions under Article 14. Its constitutional validity is before the Supreme Court. A sensitive topic to be handled precisely and neutrally.

Exam angle: Distinguish CAA (about granting citizenship to specific migrants) from the NRC (a register of citizens) — the two are often conflated.

Part C — Federalism & Institutional Developments

Abrogation of Article 370 (2019) & the Verdict (2023)

What Changed

In August 2019, the Union used Presidential orders and the Jammu & Kashmir Reorganisation Act, 2019 to abrogate the special status of J&K under Article 370 and split the state into two Union Territories — J&K (with a legislature) and Ladakh (without one).

The Verdict

In In re Article 370 (December 2023), a Constitution Bench upheld the abrogation, holding Article 370 to be a temporary provision and that J&K retained no internal sovereignty after accession. It directed restoration of statehood and elections in a time-bound manner.

Exam angle: Ties to asymmetric federalism, Article 3 (reorganisation), and the difference between a UT with and without a legislature.

The Governor's Role — Tamil Nadu Governor Case (2025)

What Changed

After Governor R.N. Ravi withheld assent to several bills for years, the Supreme Court (8 April 2025) held that a Governor cannot exercise an absolute or "pocket" veto under Article 200. A withheld bill must be returned for reconsideration, and once re-passed, assent must follow; the Court also indicated timelines and made inaction justiciable.

Significance

The freshest federalism flashpoint — part of a wider tussle between opposition-ruled states and centrally-appointed Governors.

Prelims trap: Know the Governor's four options on a bill under Article 200 — assent, withhold, return (if not a Money Bill), or reserve for the President (Article 201).

The Delhi Services Dispute (2023)

What Changed

A Constitution Bench held that the elected Delhi government controls "services" (administrative postings/transfers), except police, public order and land. The Union responded with the Government of NCT of Delhi (Amendment) Act, 2023, creating a National Capital Civil Service Authority and restoring greater central/Lieutenant-Governor control.

Significance

A key study in the special constitutional status of Delhi (Article 239AA) and Centre–UT tensions.

Anti-Defection & the Tenth Schedule — Maharashtra Crisis (2023)

What Changed

In Subhash Desai v. Governor of Maharashtra (May 2023), a Constitution Bench clarified the working of the Tenth Schedule (anti-defection law, added by the 52nd Amendment, 1985). It held that a "legislature party" has no existence independent of the "political party," that only the political party (not a breakaway legislature group) can appoint the whip, and that a Speaker must decide disqualification petitions within a reasonable time.

The Unresolved Question

The Court criticised the Governor's role in the events but held it could not restore the previous government since the CM had resigned. It referred the Nabam Rebia (2016) question — whether a Speaker facing a removal motion can decide disqualifications — to a larger bench.

Exam angle: Recurring theme — the Speaker's dual role (partisan politician + neutral tribunal) and calls to shift anti-defection adjudication to an independent tribunal.

The Money Bill Controversy (Article 110)

The Issue

Several major laws — the Aadhaar Act (2016) and amendments via Finance Acts (e.g. to tribunals, PMLA and foreign funding rules) — were passed as Money Bills, which bypass the Rajya Sabha's power to amend/reject.

Why It Matters

Critics say this sidelines the Upper House and misuses Article 110. A seven-judge bench of the Supreme Court is set to settle the scope of "Money Bill." A key GS-II debate on bicameralism and legislative propriety.

💡 Value Addition — The Basic Structure & Collegium Debate

Recent years have seen public friction between the executive and the judiciary. Some in high office have questioned the Basic Structure Doctrine and the collegium system of judicial appointments (revived after the NJAC was struck down in 2015). For Mains, present both sides: the doctrine as a democratic safeguard vs the argument that it lets an unelected judiciary override an elected Parliament.

💡 Value Addition — The Delimitation Debate

Under Article 82, the delimitation of Lok Sabha seats has been frozen until the first census after 2026. When it happens, it will reshape representation — and southern states fear losing seats to more populous northern states. It also unlocks the Women's Reservation (106th Amendment), making delimitation one of the most consequential upcoming events in Indian polity.

Part D — Big Reforms on the Table

One Nation One Election — Constitution (129th Amendment) Bill, 2024

The Proposal

To hold simultaneous elections to the Lok Sabha and all State Legislative Assemblies (with local bodies to follow). Two bills were introduced in the Lok Sabha on 17 December 2024: the Constitution (129th Amendment) Bill, 2024 (inserting Article 82A) and the Union Territories Laws (Amendment) Bill, 2024. They are based on the Ram Nath Kovind High-Level Committee report (March 2024) and are being examined by a 39-member Joint Parliamentary Committee (chaired by P.P. Chaudhary), whose tenure has been extended.

How It Would Work

An "appointed date" would be set after a general election; assemblies formed thereafter would have terms ending with the Lok Sabha's, so future elections synchronise. If a House is dissolved early, a fresh election would be held only for the remainder of the term.

The Debate

Arguments for: lower election costs, less disruption to governance (the model code of conduct), better administrative focus. Arguments against: concerns about federalism (states' autonomy over assembly terms), the "nationalisation" of local issues weakening regional parties, and the huge logistical demands.

Very high yield: Learn Article 82A, the Kovind panel, the JPC, and that amendments to Articles like 83 and 172 are involved. A prime Prelims fact and Mains GS-II debate.

Uniform Civil Code — Uttarakhand Leads (2024–25)

What Changed

Article 44 (a Directive Principle) urges the State to secure a Uniform Civil Code. Uttarakhand became the first state to enact and implement a UCC (the law was passed in 2024 and rolled out from early 2025), providing uniform rules on marriage, divorce, succession and live-in relationships across communities, while exempting Scheduled Tribes.

The Debate

For: equality, gender justice, national integration. Against: concerns about religious freedom (Articles 25–26), diversity, and the treatment of personal laws. A recurring Mains and Essay theme.

Contemporary developments reward the candidate who can do two things at once — state the exact fact (Article, year, what it replaced) and then weigh the debate fairly. That combination answers a Prelims MCQ and earns marks in Mains. — Legacy IAS Faculty

Probable Prelims MCQs (with Answers)

📝 Prelims MCQ 1

Consider the following pairs of amendment and its provision:

1. 101st Amendment — Goods and Services Tax
2. 103rd Amendment — 10% reservation for Economically Weaker Sections
3. 106th Amendment — Reservation of seats for women in legislatures

How many of the above pairs are correctly matched?
(a) Only one   (b) Only two   (c) All three   (d) None

Answer: (c). All three are correctly matched.

📝 Prelims MCQ 2

With reference to the three new criminal laws that came into force on 1 July 2024, consider the following statements:

1. The Bharatiya Nyaya Sanhita replaced the Code of Criminal Procedure.
2. The Bharatiya Sakshya Adhiniyam replaced the Indian Evidence Act.
3. Zero FIR has been given statutory recognition.

Which of the statements given above are correct?
(a) 1 and 2 only   (b) 2 and 3 only   (c) 1 and 3 only   (d) 1, 2 and 3

Answer: (b). Statement 1 is wrong — the BNS replaced the Indian Penal Code (the BNSS replaced the CrPC). Statements 2 and 3 are correct.

📝 Prelims MCQ 3

With reference to the Women's Reservation (106th Amendment) Act, 2023, consider the following statements:

1. It reserves one-third of seats for women in the Lok Sabha and State Legislative Assemblies.
2. It came into force immediately upon receiving the President's assent.
3. The reserved seats are to be rotated.

Which of the statements given above are correct?
(a) 1 and 2 only   (b) 1 and 3 only   (c) 2 and 3 only   (d) 1, 2 and 3

Answer: (b). Statement 2 is wrong — the reservation becomes operative only after a delimitation based on the first census following the Amendment, not immediately.

📝 Prelims MCQ 4

Consider the following statements about the Constitution (129th Amendment) Bill, 2024:

1. It seeks to enable simultaneous elections to the Lok Sabha and State Legislative Assemblies.
2. It proposes to insert a new Article 82A into the Constitution.

Which of the statements given above is/are correct?
(a) 1 only   (b) 2 only   (c) Both 1 and 2   (d) Neither 1 nor 2

Answer: (c). Both are correct.

📝 Prelims MCQ 5

Consider the following pairs of amendment and its subject:

1. 99th Amendment — National Judicial Appointments Commission
2. 100th Amendment — Land Boundary Agreement with Bangladesh
3. 97th Amendment — Cooperative societies

How many of the above pairs are correctly matched?
(a) Only one   (b) Only two   (c) All three   (d) None

Answer: (c). All three are correctly matched. (Note: the 99th Amendment/NJAC was later struck down; Part IX-B of the 97th was partly struck down for want of State ratification.)

📝 Prelims MCQ 6

With reference to the anti-defection law (Tenth Schedule), consider the following statements:

1. It was added to the Constitution by the 52nd Amendment Act, 1985.
2. The only defence against disqualification for a group of defectors is a merger.
3. Disqualification questions are decided by the President.

Which of the statements given above are correct?
(a) 1 and 2 only   (b) 2 and 3 only   (c) 1 and 3 only   (d) 1, 2 and 3

Answer: (a). Statement 3 is wrong — disqualification is decided by the Speaker/Chairman of the House (subject to judicial review per Kihoto Hollohan), not the President.

Probable Mains Questions (GS Paper II)

  1. "Simultaneous elections promise efficiency but raise concerns for federalism and democratic accountability." Critically examine the One Nation One Election proposal. (250 words)
  2. Discuss how the 103rd (EWS) and 106th (Women's Reservation) Amendments reflect the evolving idea of social justice in India. (250 words)
  3. The three new criminal laws aim to build a technology-enabled, victim-centric justice system. Examine their key features and the challenges in implementation. (150 words)
  4. The Waqf (Amendment) Act, 2025 tests the balance between State regulation and minority autonomy under Articles 25 and 26. Analyse. (250 words)
  5. "Recent developments have re-opened the debate on the Governor's constitutional role." Discuss with reference to Article 200 and Centre–State relations. (150 words)

Frequently Asked Questions (FAQs)

What are the most important recent constitutional amendments for UPSC?

The 101st (GST), 103rd (EWS reservation), 105th (States' OBC lists) and 106th (Women's Reservation) amendments are the most exam-relevant, along with the 102nd (NCBC) and 104th (SC/ST reservation, Anglo-Indians).

Which laws replaced the IPC, CrPC and Evidence Act?

From 1 July 2024, the Bharatiya Nyaya Sanhita (BNS) replaced the IPC, the Bharatiya Nagarik Suraksha Sanhita (BNSS) replaced the CrPC, and the Bharatiya Sakshya Adhiniyam (BSA) replaced the Indian Evidence Act.

Is the Women's Reservation Act (106th Amendment) in force?

It has been enacted but is not yet operational. It will take effect only after a delimitation exercise based on the first census conducted after the Amendment's commencement.

What is the One Nation One Election bill?

The Constitution (129th Amendment) Bill, 2024 proposes simultaneous elections to the Lok Sabha and State Assemblies by inserting Article 82A. It is currently before a Joint Parliamentary Committee and is based on the Ram Nath Kovind committee report.

Which state was the first to implement a Uniform Civil Code?

Uttarakhand became the first state to enact and implement a Uniform Civil Code (passed in 2024, rolled out from early 2025), covering marriage, divorce, succession and live-in relationships, while exempting Scheduled Tribes.

Why was the NJAC (99th Amendment) struck down?

In the Fourth Judges Case (2015), the Supreme Court held that the National Judicial Appointments Commission compromised the independence of the judiciary — part of the basic structure — and restored the collegium system.

What is the difference between the CAA and the NRC?

The CAA provides a fast-track to citizenship for specific persecuted minorities from three neighbouring countries. The NRC is a proposed register to identify citizens. The CAA grants citizenship; the NRC would verify it — they are distinct.

Who decides disqualification under the anti-defection law?

The Speaker (or Chairman) of the House decides, and the decision is subject to judicial review (per Kihoto Hollohan). Recent cases have highlighted problems with delay and the Speaker's partisan role.

💡

Key Takeaways

  • Learn each development as year + Article/law + core change + the debate; that covers both a Prelims fact and a Mains argument.
  • Recent amendments to master: 101st (GST), 102nd (NCBC), 103rd (EWS), 104th (SC/ST & Anglo-Indians), 105th (OBC lists), 106th (Women's Reservation).
  • The three new criminal laws (BNS/BNSS/BSA) replaced the IPC, CrPC and Evidence Act from 1 July 2024; pair with the DPDP Act and CEC Act of 2023.
  • Federalism flashpoints: Article 370 abrogation & verdict, the TN Governor case (Art. 200), the Delhi services dispute, and delimitation.
  • The Waqf (Amendment)/UMEED Act, 2025 is partly stayed by the Supreme Court — handle it precisely and neutrally for Mains.
  • Big pending reforms: One Nation One Election (129th Amendment Bill, Art. 82A) and the Uniform Civil Code (Uttarakhand first) — prime GS-II and Essay themes.

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