You can imagine it .

one religious community will dominate other
the state will enforce any particular religion nor take away the religious freedom of individual

Introduction:
Secularism is a fundamental principle that ensures religious freedom, equality, and harmony in a diverse country like India. It acts as a safeguard against religious discrimination and promotes a pluralistic society. However, if there were no secularism in India, it would have significant implications for various aspects of the nation.

1. Religious Intolerance and Discrimination:
Without secularism, religious intolerance may prevail, leading to discrimination and persecution based on one's faith. This could result in communal tensions, violence, and social unrest. Minorities, who are already vulnerable, may face marginalization and exclusion, hindering their growth and development.

2. Erosion of Religious Freedom:
Secularism guarantees the freedom to practice and propagate any religion without interference from the state or dominant religious groups. Without this safeguard, religious freedom could be curtailed, forcing individuals to conform to the beliefs and practices of the majority. This would undermine the principles of democracy and individual liberty.

3. Political Instrumentalization of Religion:
The absence of secularism could lead to the instrumentalization of religion for political gains. Political parties may exploit religious sentiments to garner support and consolidate their power. This would polarize society along religious lines, eroding the secular fabric of the nation and hindering social cohesion.

4. Inequality and Social Fragmentation:
Secularism promotes equality among all citizens, irrespective of their religious background. Without it, divisions may deepen, and social fragmentation could occur. This would hinder the progress and development of the nation as different religious groups may prioritize their own interests over the collective welfare.

5. Education and Cultural Influence:
Secularism plays a crucial role in the education system by ensuring that religious biases and prejudices do not influence the curriculum. In the absence of secularism, education may become religiously biased, leading to indoctrination and the promotion of one particular faith. This would hinder the holistic development of individuals and restrict their exposure to diverse perspectives.

6. International Standing and Unity:
Secularism is seen as a hallmark of a modern, inclusive, and progressive society. Without secularism, India's international standing may be negatively impacted, as it would be perceived as an intolerant and discriminatory nation. Additionally, the unity and integrity of the country could be threatened as divisions based on religion may lead to separatist movements and conflicts.

Conclusion:
Secularism serves as the bedrock of a harmonious and diverse society in India. Its absence would have far-reaching consequences, including religious intolerance, erosion of religious freedom, social fragmentation, and political exploitation of religion. Upholding and strengthening secularism is crucial for India's progress, unity, and international standing.