Normally, the Parliament can legislate on the subjects enumerated in the

1. Federal Structure and Distribution of Powers (basic)

In our journey to understand the powers of the Houses of Parliament, we must first look at the foundation they stand upon: the Federal Structure of India. While the Constitution of India describes the country as a "Union of States" under Article 1, it functions through a dual polity where power is divided between the Centre and the States. This division is not accidental; it ensures that while the nation remains unified on matters of national importance, the states have the autonomy to handle local needs. Indian Polity, M. Laxmikanth, Chapter 3, p.29

The core of this distribution lies in the Seventh Schedule of the Constitution, which bifurcates legislative authority into three distinct lists. This ensures that the Parliament and State Legislatures don't constantly step on each other's toes. The Union List contains matters of national security and foreign relations where only the Parliament can act. The State List covers local matters like police and agriculture. However, there is also a shared space known as the Concurrent List, where both can legislate to ensure national coordination on matters like education or marriage. Exploring Society: India and Beyond, NCERT Class VIII, Chapter 6, p.155

List Type	Who Legislates?	Example Subjects
Union List (List I)	Parliament exclusively	Defense, Banking, Foreign Affairs, Railways
State List (List II)	State Legislatures normally	Police, Public Health, Agriculture, Fisheries
Concurrent List (List III)	Both Parliament and States	Education, Forests, Trade Unions, Marriage

A unique feature of the Indian system is its "centralizing tendency." While it has federal features like a written constitution and an independent judiciary, it also has unitary features like a strong Centre. This led scholars like K.C. Wheare to describe the Indian Constitution as "quasi-federal"—meaning it is federal in form but unitary in spirit. Indian Polity, M. Laxmikanth, Chapter 13, p.141. One clear example of this is that in case of a conflict between a Central law and a State law on a Concurrent subject, the Central law generally prevails. This hierarchy is crucial because it defines the boundaries within which the "Powers of the Houses" are exercised.

Sources: Indian Polity, M. Laxmikanth, Salient Features of the Constitution, p.29; Indian Polity, M. Laxmikanth, Federal System, p.141; Exploring Society: India and Beyond, NCERT Class VIII, The Parliamentary System: Legislature and Executive, p.155

2. The Seventh Schedule: Three Lists (basic)

In any federal system, the most critical task is the division of powers between the center and the units to ensure administrative clarity. The Indian Constitution achieves this through Article 246 and the Seventh Schedule. Think of the Seventh Schedule as a 'work-distribution chart' that categorizes legislative subjects into three distinct lists, ensuring that both the Parliament and State Legislatures know their specific domains. Indian Polity, M. Laxmikanth, Chapter 15, p.145.

The first two lists define exclusive territories: the Union List (List I) contains matters of national importance like defense, foreign affairs, and banking, where only the Parliament can make laws. Conversely, the State List (List II) covers subjects of local or regional significance, such as police, public health, and agriculture, giving State Legislatures exclusive authority under normal circumstances. Geography of India, Majid Husain, Chapter 15, p.56.

However, there are certain areas where a uniform national framework is desirable but local variations are also necessary—these are placed in the Concurrent List (List III). Subjects like education, marriage, and forest management fall here, allowing both the Parliament and State Legislatures to legislate. To prevent legal chaos, the Constitution establishes Central Supremacy: if a state law conflicts with a central law on a Concurrent subject, the central law prevails. Exploring Society: India and Beyond, NCERT Class VIII, Chapter 6, p.155. Any subject not mentioned in these three lists (known as Residuary Powers) is automatically vested in the Parliament. Indian Polity, M. Laxmikanth, Chapter 14, p.139.

List	Authority	Key Subjects
Union List	Parliament Only	Defense, Railways, Banking, Foreign Affairs
State List	State Legislature	Police, Agriculture, Public Health, Local Govt.
Concurrent List	Both (Union prevails in conflict)	Education, Forests, Marriage, Trade Unions

Sources: Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.145; Geography of India, Majid Husain, Chapter 15: Regional Development and Planning, p.56; Exploring Society: India and Beyond, NCERT Class VIII, Chapter 6: The Parliamentary System: Legislature and Executive, p.155; Indian Polity, M. Laxmikanth, Chapter 14: Federal System, p.139

3. Territorial Extent of Legislative Power (intermediate)

To understand the Territorial Extent of Legislative Power, we must first look at Article 245 of the Indian Constitution. This article sets the geographic boundaries for the laws made by the Union and the States. Think of it as a jurisdictional map: it defines exactly where the authority of a legislature stops and where it begins. Generally, the principle is simple—the Parliament looks after the whole nation, while State Legislatures look after their specific territories Indian Polity, Important Doctrines of Constitutional Interpretation, p.652.

The Parliament has the most expansive reach. It can make laws for the whole or any part of the territory of India, which includes all States, Union Territories (UTs), and any other areas that India might acquire in the future Introduction to the Constitution of India, DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.376. A unique feature of the Parliament is its power of extra-territorial legislation. This means laws passed by the Indian Parliament can apply to Indian citizens and their property located anywhere in the world. For instance, if an Indian citizen commits a crime abroad that is covered under an Indian law with extra-territorial reach, they can still be held liable under Indian jurisdiction Indian Polity, Important Doctrines of Constitutional Interpretation, p.652.

In contrast, a State Legislature is usually confined to its own borders. Its laws apply only within the state or to specific parts of it. However, there is a fascinating exception known as the Doctrine of Territorial Nexus. This doctrine states that a state law can have extra-territorial operation (meaning it applies to people or objects outside the state) if there is a sufficient connection (nexus) between the state and the subject matter of the law Indian Polity, Important Doctrines of Constitutional Interpretation, p.652. For example, if a company is based in Mumbai but carries on a significant portion of its business in Bihar, the Bihar government might be able to tax that business even though the company is technically "outside" its territory, provided the connection is substantial and not illusory.

Feature	Parliament	State Legislature
Geographic Reach	Whole or any part of India (States + UTs)	Whole or any part of the specific State
Extra-territoriality	Inherent power; applies to citizens/property worldwide	Only valid if a "territorial nexus" is established
High Court Jurisdiction	Can extend or exclude HC jurisdiction over UTs	Cannot change its own territorial jurisdiction

It is also important to note that Parliament plays a special role regarding Union Territories. While UTs may sometimes fall under the jurisdiction of a neighboring State's High Court, it is the Parliament that holds the power to extend or withdraw that jurisdiction Indian Polity, High Court, p.353. This reinforces the idea that while States are sovereign within their territories for specific subjects, the Parliament maintains a broader, overarching territorial authority over the entire Union.

Sources: Indian Polity, M. Laxmikanth(7th ed.), Important Doctrines of Constitutional Interpretation, p.652; Introduction to the Constitution of India, D. D. Basu (26th ed.), DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.376; Indian Polity, M. Laxmikanth(7th ed.), High Court, p.353

4. Residuary Powers (Article 248) (intermediate)

In any federal structure, the Constitution divides powers between the Centre and the States. However, the framers of the Indian Constitution realized that it is impossible to predict every possible subject that might emerge in the future—such as Cyber Law or Space Exploration. To address these unforeseen subjects, the Constitution provides for Residuary Powers under Article 248. This article specifies that the Union Parliament has exclusive power to make any law with respect to any matter not enumerated in the State List or the Concurrent List Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.146.

It is important to note that this residuary power is not just about general legislation; it also includes the power to levy residuary taxes—taxes on subjects that are not mentioned in any of the three lists of the Seventh Schedule. While the State Legislatures have exclusive control over the State List, the Parliament's dominance is established by the fact that whenever a new, unlisted subject arises, the authority automatically vests in the Union Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.702. If a dispute arises over whether a subject is truly "residuary" or belongs to a specific list, the final determination rests with the Courts Introduction to the Constitution of India, D. D. Basu, Distribution of Legislative and Executive Powers, p.378.

The Indian approach to residuary powers marks a significant departure from other federal systems and our own colonial history, as shown in the comparison below:

System/Act	Vesting of Residuary Powers	Orientation
USA & Australia	Vested in the States	Strong States
Canada	Vested in the Centre	Strong Centre (Similar to India)
GoI Act, 1935	Vested in the Governor-General	Unitary/Executive control
Indian Constitution	Vested in the Parliament (Article 248)	Centralizing Tendency

Sources: Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.146; Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.702; Introduction to the Constitution of India, D. D. Basu, Distribution of Legislative and Executive Powers, p.378

5. Centre-State Administrative Relations (intermediate)

In any federal system, the division of executive power usually follows the division of legislative power. In India, this is governed by Articles 256 to 263 in Part XI of the Constitution Laxmikanth, M. Indian Polity, Chapter 15, p.148. While the Centre and States are supreme in their respective spheres, the Constitution establishes a 'strong central bias' to ensure the unity and integrity of the nation. The basic principle is that the executive power of the Union extends to matters on which Parliament can make laws (Union List), while the State's executive power extends to the State List. Interestingly, for subjects in the Concurrent List, the executive power normally rests with the States unless the Constitution or a specific Parliamentary law expressly assigns it to the Union. To ensure harmony, the Union is empowered to issue administrative directions to the States. Under Article 256, the executive power of every State must be exercised to ensure compliance with the laws made by Parliament. Article 257 goes further, allowing the Centre to give directions to a State regarding the construction and maintenance of means of communication declared to be of national or military importance, and the protection of railways within the State Laxmikanth, M. Indian Polity, Chapter 15, p.165. What happens if a State refuses to follow these directions? This is where the Constitution provides a 'coercive sanction.' Under Article 365, if a State fails to comply with any directions given by the Union, it is lawful for the President to hold that a situation has arisen in which the Government of the State cannot be carried on in accordance with the provisions of the Constitution. This effectively opens the door for the imposition of President’s Rule under Article 356 D. D. Basu, Introduction to the Constitution of India, ADMINISTRATIVE RELATIONS BETWEEN THE UNION AND THE STATES, p.394. During extraordinary times, these relations shift significantly. During a National Emergency (Article 352), the Union's power to give directions extends to any matter, effectively bringing the State executive under the complete control of the Union without suspending the State government D. D. Basu, Introduction to the Constitution of India, DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.381.

Sources: Laxmikanth, M. Indian Polity, Chapter 15: Centre-State Relations, p.148, 165; D. D. Basu, Introduction to the Constitution of India, Administrative Relations Between the Union and the States, p.381, 394

6. Centre-State Financial Relations (intermediate)

In a federal setup, the distribution of financial resources is as critical as the distribution of legislative powers. In India, the Constitution ensures that while the Union has more broad-based taxing powers, the States have significant expenditure responsibilities (like health and education). To bridge this gap, known as vertical imbalance, the Constitution provides a robust mechanism for fiscal devolution.

The cornerstone of this system is the Finance Commission (FC), established under Article 280. This is a quasi-judicial body constituted by the President of India every five years (or earlier if necessary). Its primary role is to act as the "balancing wheel" of Indian fiscal federalism by recommending how the net proceeds of taxes should be shared between the Union and the States, and how that pool should be divided among the States themselves Laxmikanth, M. Indian Polity, Chapter 46, p. 431. The Commission's recommendations ensure that financial distribution is based on merit and objective criteria rather than political whim D. D. Basu, Introduction to the Constitution of India, DISTRIBUTION OF FINANCIAL POWERS, p. 387.

Beyond the sharing of tax revenues, the Constitution provides for Grants-in-Aid to further support State finances. These are broadly categorized into two types:

Feature	Statutory Grants (Art. 275)	Discretionary Grants (Art. 282)
Nature	Charged on the Consolidated Fund of India; recommended by the Finance Commission.	Given at the discretion of the Centre; no constitutional obligation to provide them.
Purpose	To assist states in need of financial assistance or to promote the welfare of Scheduled Tribes.	To help states fulfill national plan targets or coordinate state action for public purposes.

While Article 275 grants are based on the objective assessment of the Finance Commission, Article 282 gives the Union the flexibility to spend on any public purpose, even if it falls outside its immediate legislative jurisdiction Laxmikanth, M. Indian Polity, Chapter 15, p. 155. This dual mechanism ensures that the Indian financial structure remains both stable and adaptable to national priorities.

Sources: Laxmikanth, M. Indian Polity, Chapter 46: Finance Commission, p.431; Introduction to the Constitution of India, D. D. Basu, DISTRIBUTION OF FINANCIAL POWERS, p.387; Laxmikanth, M. Indian Polity, Chapter 15: Centre-State Relations, p.155

7. Parliamentary Legislation in the State Field (exam-level)

In the Indian federal system, the Seventh Schedule usually keeps the Union and the States in their own legislative lanes. However, our Constitution is 'federal with a unitary tilt,' meaning there are specific 'extraordinary circumstances' where the Parliament can step into the State List (List II). This isn't an act of overreach; it is a constitutional safety valve designed to protect the national interest or address crises. Under normal circumstances, Article 246 ensures that State Legislatures have exclusive power over subjects like agriculture, police, and public health Indian Polity, M. Laxmikanth, Chapter 15, p. 145. But when the situation demands, the Parliament can assume the role of the state legislator through five specific routes. One of the most significant powers lies with the Rajya Sabha. Under Article 249, if the Rajya Sabha declares by a resolution supported by two-thirds of the members present and voting that it is necessary in the national interest, Parliament can make laws on any subject in the State List. This highlights the Rajya Sabha's role as the protector of state interests—Parliament cannot 'invade' the state's domain unless the house representing the States gives its consent Indian Constitution at Work, NCERT Class XI, p. 110. Similarly, Article 312 allows the Rajya Sabha to authorize the creation of new All-India Services, which fundamentally impacts state administration Indian Polity, M. Laxmikanth, Chapter 30, p. 549. Beyond the Rajya Sabha's initiative, the Parliament’s reach extends during emergencies. During a National Emergency (Article 250), the distribution of powers is effectively suspended, and Parliament can legislate on any State subject. While the state legislature continues to exist, its laws become subject to the overriding power of the Parliament Indian Polity, M. Laxmikanth, Chapter 16, p. 175. Additionally, under Article 252, if two or more states pass resolutions asking the Parliament to legislate on a state matter, the Parliament can do so—though such a law applies only to those consenting states.

Provision	Trigger Mechanism	Duration of Law
Art 249 (National Interest)	Rajya Sabha resolution (2/3rd majority)	Remains in force for 1 year (can be renewed)
Art 250 (National Emergency)	Proclamation of Emergency in operation	Ceases 6 months after emergency ends
Art 252 (States' Consent)	Resolution by 2 or more State Legislatures	Until repealed/amended by Parliament
Art 253 (International Agreements)	To implement treaties/conventions	As per the requirements of the treaty

Sources: Indian Polity, M. Laxmikanth, Chapter 15: Centre-State Relations, p.145; Indian Constitution at Work, NCERT Class XI, Chapter 5: Legislature, p.110; Indian Polity, M. Laxmikanth, Chapter 30: Public Services, p.549; Indian Polity, M. Laxmikanth, Chapter 16: Emergency Provisions, p.175

8. Legislative Competence and Predominance (exam-level)

In the federal structure of India, legislative competence refers to the legal authority of the Parliament and State Legislatures to make laws on specific subjects. This division is clearly demarcated under Article 246 and the Seventh Schedule of the Constitution, which categorizes subjects into the Union List (List I), State List (List II), and Concurrent List (List III) Laxmikanth, M. Indian Polity, Chapter 15, p. 145. While the goal is to have clear boundaries, overlaps often occur. To resolve these, the Constitution establishes a clear principle of predominance, ensuring that national interests remain supreme in cases of conflict.

The hierarchy of legislative power is designed such that the Union List takes precedence over all others. If there is an overlap or conflict between a matter in the Union List and the State List, the Union List prevails. Similarly, if the Union List conflicts with the Concurrent List, the Union List again remains supreme. Furthermore, the Concurrent List enjoys predominance over the State List Laxmikanth, M. Indian Polity, Chapter 15, p. 146. This structure is summarized in the table below:

Conflict Scenario	Prevailing Authority
Union List vs. State List	Union List
Union List vs. Concurrent List	Union List
Concurrent List vs. State List	Concurrent List

A critical aspect of this predominance is the Doctrine of Repugnancy under Article 254. This doctrine applies when both the Parliament and a State Legislature enact laws on the same subject in the Concurrent List. If the two laws are inconsistent and cannot coexist (as established in M. Karunanidhi v. UOI), the Central law normally prevails Basu, D. D. Introduction to the Constitution of India, p. 378. However, there is a unique exception: if a State law is reserved for the President's consideration and receives his/her assent, it will prevail over the Central law within that specific state. Even then, the Parliament retains the power to subsequently "override" such a state law by passing a new legislation on the same matter Laxmikanth, M. Indian Polity, p. 664.

Sources: Indian Polity, M. Laxmikanth(7th ed.), Chapter 15: Centre-State Relations, p.145-146; Introduction to the Constitution of India, D. D. Basu (26th ed.), DISTRIBUTION OF LEGISLATIVE AND EXECUTIVE POWERS, p.378; Indian Polity, M. Laxmikanth(7th ed.), Important Doctrines of Constitutional Interpretation, p.664

9. Solving the Original PYQ (exam-level)

This question brings together the foundational building blocks of the Seventh Schedule and Article 246, which establish the federal distribution of powers in India. Having just learned about the three lists, you can see how the Constitution defines the functional jurisdiction of the Union and the States. The term "normally" is the vital cue here; it asks for the standard legislative competence of the Parliament as per the regular constitutional scheme, rather than the extraordinary circumstances where it might venture into the State List. As noted in Indian Polity, M. Laxmikanth, this division ensures that matters of national importance are handled centrally while shared interests are managed collaboratively.

To arrive at the correct answer, (D) Union as well as Concurrent List, you must apply the logic of exclusive versus concurrent jurisdiction. Under Article 246(1), Parliament has the exclusive power to legislate on items in the Union List (List I). However, the coaching "trick" is to remember that under Article 246(2), Parliament also possesses the authority to make laws for subjects in the Concurrent List (List III), alongside state legislatures. Therefore, limiting the Parliament's normal power to only one list would be factually incomplete. The Concurrent List represents a shared domain where Central law generally prevails in case of a conflict, making it a regular part of the Parliament's legislative activity as highlighted in Exploring Society: India and Beyond, Social Science, Class VIII, NCERT.

Common UPSC traps often involve choosing incomplete answers like Option (A) or Option (B). While Parliament does legislate on the Union List, selecting (A) alone ignores the vast array of shared subjects like education and forests found in the Concurrent List. Conversely, the State List (Option C) is generally the exclusive domain of the State Legislatures; Parliament only touches it under specific conditions—such as a National Emergency or a Rajya Sabha resolution under Article 249—which falls outside the "normal" scope defined in the question. Always look for the option that encompasses the full breadth of the institution's constitutional mandate.