If India hadn't been created out of the remains of the British Raj, would it exist as a country today?

The rise of the Raj was also the same time that the Maratha Confederation was expanding it's empire. In absence of the British, the Marathas would have occupied the vacuum being created by the decline of the Mughal empire. But given the relative strengths of the Punjab, Bengal, Audh, Ahom, Hyderabad, Mysore, Travancore and various Rajputana empires in the critical period when the Raj got established (1750-1850), it is difficult to envision the Marathas conquering and subduing all of them. The British were able to use their superior technology, training and force of arms to decimate the fighting potential of all of these kingdoms (including the Marathas). Sardar Patel was able to quickly incorporate all these kingdoms into independent India simply because they were in no position to offer any military resistance to the modern British/Indian army of the late 1940s. So I find it difficult to envision the current modern India in absence of the British Raj.

It is a hypothetical question.But chances of a united india would be rare possiblity. It might be a continent like Europe with small countries which are having different languages and cultures.Freedom movement under Indian National Congress made it possible to have a unitedIindia.

Yes, you are absolutely right. India is entirely an artificial country that exists only because of the British Empire and Muslim separatism (Muslim-majority parts of the erstwhile British Indian Empire were split off in 1947). In the absence of this British imperialism, India would be divided into many countries based on its regional and ethno-linguistic identities (which are the parallel to European nations).