The Indian Constitution is federal in form but unitary in substance

The statement "The Indian Constitution is federal in form but unitary in substance" refers to the unique structure of governance in India. Here's a step-by-step explanation:

1. Federal in Form: The Constitution of India establishes a federal structure to the Indian government, declaring it to be a "Union of States". This implies that the state governments have the power to administer their territory independently, in matters not controlled by the central government. The constitution distributes powers between the central and state governments. This distribution of power is an essential feature of a federal constitution.

2. Unitary in Substance: Despite the federal structure, the Indian constitution provides for a strong central government. In case of emergencies (war, external aggression, armed rebellion, or failure of constitutional machinery in a state), the central government is empowered to exercise complete control over the states. This makes the constitution unitary in nature.

3. The Indian constitution also has provisions for the central government to take over the state government in certain situations, making it lean towards a unitary system.

4. The constitution also provides for a single citizenship for the whole of India, unlike in other federal states like the USA where there is dual citizenship, i.e., citizenship of USA and of the particular state.

5. The Supreme Court has the authority to settle disputes between the Centre and the states or between different states, which again shows the unitary bias of the constitution.

In conclusion, while the Indian Constitution establishes a federal structure, it also provides for a strong central government, making it unitary in substance.