Explanation:

Delhi Conspiracy Case
One of the outfits of Bengal on the lines of Anushilan Samiti was Yungantar, which had started in the guise of a fitness club. It was also established by the revolutionaries like Arubindo Ghosh, his brother Barin Ghosh, Raja Subodh Mallik, Khudiram Bose Prafulla Chaki etc. After the Alipore Bomb Case trials, many of the members were lodged in the Jails and sent to Kala Pani, from where they were released only under a general amnesty in 1920 after First World War. One of the important members of this outfit was Ras Bihari Bose, who is best known for his association with the Indian National Army. After the Alipore Bombay Case, he left Bengal and worked in Dehradun as a clerk in the Forest Research Institute. It is said that the Delhi Conspiracy was hatched by Ras Bihari Bose, but was never proved. On 23 December 1912, a Bomb was thrown at the Viceroy Lord Hardinge when his procession was moving from Chandni Chowk. The Viceroy wounded in the attempt, but his Mahavat (driver and keeper of an elephant) was killed. The government strengthens its efforts to destroy the underground activities. Ras Bihari Bose went underground and successfully fled to Japan, where he lived till he died a few years before the conclusion of the Second World War. Before fleeing to Japan, he involved in the Ghadar Conspiracy. In the trial of this Delhi Conspiracy Case, Basant Kumar Biswas Amir Chand and Avadh Behari were convicted and executed.
Please note that Delhi Conspiracy Case is also known as Delhi Lahore Conspiracy Case or Hardinge Bomb Case.

Alipore Conspiracy Case
In 1908 a revolutionary conspiracy was intrigued to kill the Chief Presidency Magistrate D.H. Kingford of Muzaffarpur. The task was entrusted to Khudiram Bose and Prafulla Chaki. They threw the bombs on a vehicle coming out of the magistrate’s home on April 30, 1908. The magistrate could not be killed as he was not in the vehicle, but two British ladies were killed in the attack. Prafulla Chaki committed suicide after cornered by the Police and Khudi Ram Bose was arrested. The Indian policewalla Nandalal Bannerjee, who had arrested Khudi Ram Bose was later shot dead by Narendranath Bhattacharya.

Kakori Conspiracy Case
The idea that objects of the political dacoties must be to secure money belonging to the Government was that of Ram Prasad Bismil. The idea was accepted and it followed a plan that a running train at Kakori on the Lucknow-Saharanpur section should be looted. The Railway was carrying the Government chest and it was plundered successfully by 10 HRA revolutionaries. But the whole plot was unearthed. The result was arrest of some 30 people and all of them were trailed in the Kakori Conspiracy Case. The people who were arrested as follows: Swaran Singh (uncle of Bhagat Singh), Ram Prasad Bismil, Ashfaqulla Khan, Rajendra Lahiri, Durga Bhabhi (Durga Bhagavati Chandra Vohra), Roshan Singh, Sachindra Bakshi, Chandrasekhar Azad, Vishnu Sharan Dublish, Keshab Chakravarthy, Banwari Lal, Mukundi Lal, Sachindra Nath Sanyal,Manmathnath Gupta. These detainees were provided legal defense by Pandit Gobind Ballabh Pant, Mohanlal Saxena, Chandrabhanu Gupta, Ajit Prasad Jain, Gopinath Srivastava, R. M. Bahadurji and B. K. Chaudhury. The following 5 members of given sentence to death. Swaran Singh, Ram Prasad Bismil, Ashfaqullah Khan, Rajendra Lahiri and Roshan Singh Swaran Singh was the uncle of Bhagat Singh. His martyrdom inspired Bhagat Singh. The Urdu poem Sarfaroshi ki Tamanna was made popular by Ram Prasad Bismil. This poem was actually written by Bismil Azimabadi. This poem is associated with Ashfaqullah Khan, Shaheed Bhagat Singh, and Chandrashekhar Azad, who got very much inspired. Rest all were either put in jail for long term or were deported for life. The result was that HRA came to almost an end.

Kanpur Conspiracy Case
Kanpur Conspiracy Case was also against the newbie communists which were abhorred by the British Government. Some newly turned communists named M N Roy, Muzaffar Ahamed, S A Dange, Shaukat Usmani, Nalini Gupta, Singaravelu Chettiar, Ghulam Hussain were caught by the Government and were trailed for conspiring against the Government. The Charge on them was “to deprive the King Emperor of his sovereignty of British India, by complete separation of India from imperialistic Britain by a violent revolution.” But this case, brought the communists in the lime light. The newspapers covered the matter exhaustively and this was for the first time the people of India could know the communist doctrine in details. So, this case was responsible for introduction of Communism to the Indian Public. In this case, M N Roy was charged in absentia, so he was not arrested. Ghulam Hussain turned a British informer and was pardoned. Rest all people were arrested and sent to jail for 4 years.