Which organisation was founded in 1926 by Bhagat Singh, Bhagwati Charan Vohra and Sukhdev Thapar?

Which of the following revolutionary organisations was founded by V.D. Savarkar in 1904?

On which date, Sukhdev, Bhagat Singh and Rajguru were hanged?

Bhagat Singh, Sukhdev, and Rajguru were sentenced to death in –

Bhagat Singh, Rajguru, and Sukhdev were executed on –

The draft The Philosophy of the Bomb was written by Bhagwati Charan Vohra at whose request and after a full discussion with him?