1. Equal respect for all religions: In a secular state, the government does not promote or oppose any religion and treats all faiths equally before the law.

2. Freedom of religious practice: Citizens are free to follow, preach, or change their religion without discrimination.
These features protect individual rights and promote peace, tolerance and unity in a diverse society like India.

OR

1. A federal system has two or more levels of government, each functioning at different tiers for effective governance.

2. Each level of government governs the same set of citizens but handles distinct subjects related to law-making, taxation and administration within its jurisdiction.

3. The powers and responsibilities of every level of government are clearly defined in the Constitution, ensuring their legal authority and protection.

4. Constitutional changes cannot be made by a single level of government; both central and state governments must agree to any fundamental amendments.

5. The revenue sources for each level are clearly mentioned to provide financial independence and ensure smooth functioning of all tiers of government.