Which was not an effect of 1857 revolt?

Which of these was not a reason of failure of 1857 revolt?

Which one of the following towns was not a centre of the Revolt of 1857?

The revolt of 1857 at Lucknow was led by :

The Revolt of 1857 was witnessed by the poet –

Who was the last Mughal emperor at the time of the Revolt of 1857?