Mention two Fundamental Duties of the Indian citizens.

Why has the practice of awarding titles been abolished by the Constitution?

Ravi, a social activist, found that his friend, Sunil, had been arrested by the police without being informed of the charges against him. Sunil was not presented before a Magistrate within 24 hours, as law requires. Ravi approached the High Court, seeking Sunil's immediate release, arguing that his detention was unlawful.
Which writ can Ravi file in the High Court to ensure Sunil's immediate release from unlawful detention? Explain the writ in brief.

What is the significance of Fundamental Duties?