Such a plebiscite is not possible. Changing the constitution requires a sufficient majority (I think 2/3???) which hardly gonna be achievable here.... besides, anyone with a working brain will understand that alienating 300 million people is going to be more than counterproductive in ensuring stability, peace, unity, development and the rule of law.
Governments need to work for development, they need to create a safe and just framework for development and personal freedom and not some BS theocratic state.
Thats why the BJP won the elections... people are fed up with staggering growth and all its consequences like unemployment, corruption and inefficiency. They want development instead of communal tensions..... and if the BJP cannot deliver that, it will soon find itself out if power.
And where exactly did you find that BS?
Last time I checked it, it had a separation of state and religion.