The Jallianwala Bagh Massacre happened in the context of which Gandhian Satyagraha?

Which one of the following was the last step in the Gandhian strategy of Satyagraha?

The massacre of the crowd at Jallianwala Bagh at Amritsar took place on :

Who drafted the Congress Enquiry Committee Report on the Jallianwala Bagh Massacre?

Who saved the life of Gandhiji in Bihar during Champaran Satyagraha?

Which one of the following Satyagrahas was not lead by Mahatma Gandhi?