IPC Sections
IPC Section 116 : Abetment of offence punishable with imprisonment—if offence be not committed
Whoever abets an offence punishable with imprisonment shall, if that offence be not committed in consequence of the abetment, and no express provision is made by this Code for the punishment of such abetment, be punished with imprisonment of any description provided for that offence for a term which may extend to one-fourth part of the longest term provided for that offence; or with such fine as is provided for that offence, or with both; if abettor or person abetted be a public servant whose duty it is to prevent offence.
 
If abettor or person abetted be a public servant whose duty it is to prevent offence – and if the abettor or the person abetted is a public servant, whose duty it is to prevent the commission of such offence, the abettor shall be punished with imprisonment of any description provided for that offence, for a term which may extend to one-half of the longest term provided for that offence, or with such fine as is provided for the offence, or with both.
 
 
Illustrations :
 
a) A offers a bribe to B, a public servant, as a reward for showing. A some favour in the exercise of B’s official functions. B refuses to accept the bribe. A is punishable under this section.
 
b) A instigates B to give false evidence. Here, if B does not give false evidence, A has nevertheless committed the offence defined in this section, and is punishable accordingly.
 
c) A, a police-officer, whose duty it is to prevent robbery, abets the commission of robbery. Here, though the robbery be not committed, A is liable to one-half of the longest term of imprisonment provided for that offence, and also to fine.
 
d) B abets the commission of a robbery by A, a police-officer, whose duty it is to prevent that offence. Here though the robbery be not committed, B is liable to one-half of the longest term of imprisonment provided for the offence of robbery, and also to fine.
IPC Section 117 : Abetting commission of offence by the public or by more than ten persons
Whoever abets the commission of an offence by the public generally or by any number or class of persons exceeding ten, shall be punished with imprisonment of either description for a term which may extend to three years, or with fine, or with both.
 
 
Illustrations :
 
A affixes in a public place a placard instigating a sect consisting of more than ten members to meet at a certain time and place, for the purpose of attacking the members of an adverse sect, while engaged in a procession. A has committed the offence defined in this section.
IPC Section 118 : Concealing design to commit offence punishable with death or imprisonment for life
Whoever intending to facilitate or knowing it to be likely that he will thereby facilitate the commission of an offence punishable with death or imprisonment for life, voluntarily conceals, by any act or illegal omission, the existence of a design to commit such offence or makes any representation which he knows to be false respecting such design,
 
If offence be committed – If offence be not committed – shall, if that offence be committed, be punished with imprisonment of either description for a term which may extend to seven years, or, if the offence of not committed, with imprisonment of either description, for a term which may extend to three years; and in either case shall also be liable to fine.
 
 
Illustrations :
 
i) A, knowing that dacoity is about to be committed at B, falsely informs the Magistrate that a dacoity is about to be committed at C, a place in an opposite direction, and thereby misleads the Magistrate with intent to facilitate the commission of the offence. The dacoity is committed at B in pursuance of the design. A is punishable under this section.
IPC Section 119 : Public servant concealing design to commit offence which it is his duty to prevent
Whoever, being a public servant intending to facilitate or knowing it to be likely that he will thereby facilitate the commission of an offence which it is his duty as such public servant to prevent, voluntarily conceals, by any act or illegal omission, the existence of a design to commit such offence, or makes any representation which he knows to be false respecting such design.
 
If offence be committed – shall, if the offence be committed, be punished with imprisonment of any description provided for the offence, for a term which may extend to one-half of the longest term of such imprisonment, or with such fine as is provided for that offence, or with both;
 
If offence be punishable with death, etc – or, if the offence be punishable with death or imprisonment for life, with imprisonment of either description for a term which may extend to ten years;
 
If offence be not committed – or, if the offence be not committed, shall be punished with imprisonment of any description provided for the offence for a term which may extend to one-fourth part of the longest term of such imprisonment or with such fine as is provided for the offence, or with both.


Illustrations :
 
i) A, an officer of police, being legally bound to give information of all designs to commit robbery which may come to his knowledge, and knowing that B designs to commit robbery, omits to give such information, with intent to facilitate the commission of that offence. here A has by an illegal omission concealed the existence of B’s design and is liable to punishment according to the provision of this section.
IPC Section 120 : Concealing design to commit offence punishable with imprisonment
Whoever, intending to facilitate or knowing it to be likely that he will thereby facilitate the commission of an offence punishable with imprisonment, voluntarily conceals, by any act or illegal omission, the existence of a design to commit such offence, or makes any representation which he knows to be false respecting such design, if offence be committed-if offence be not committed.
 
If offence be committed – if offence be not committed – shall, if the offence be committed, be punished with imprisonment of the description provided for the offence, for a term which may extend to one-fourth, and, if the offence be not committed, to one-eight, of the longest term of such imprisonment, or with such fine as is provided for the offence, or with both.
IPC Section 120-A : Definition of criminal conspiracy
When two or more persons agree to do, or cause to be done:
 
  1) an illegal act, or
 
  2) an act which is not illegal by illegal means, such an agreement is designated a criminal conspiracy;
 
Provided that no agreement except an agreement to commit an offence shall amount to a criminal conspiracy unless some act besides the agreement is done by one or more parties to such agreement in pursuance thereof.
 
 
Explanations :
 
  1) It is immaterial whether the illegal act is the ultimate object of such agreement, or is merely incidental to that object.
IPC Section 120-B : Punishment of criminal conspiracy
1) Whoever is a party to a criminal conspiracy to commit an offence punishable with death, imprisonment for life or rigorous imprisonment for a term of two years or upwards, shall, where no express provision is made in this Code for the punishment of such a conspiracy, be punished in the same manner as if he had abetted such offence.
 
2) Whoever is a party to a criminal conspiracy other than a criminal conspiracy to commit an offence punishable as aforesaid shall be punished with imprisonment of either description for a term not exceeding six months, or with fine or with both.
IPC Section 121 : Waging, or attempting to wage war, or abetting waging of war, against the Government of India
Whoever wages war against the Government of India, or attempts to wage such war, or abets the waging of such war, shall be punished with death, or imprisonment for life and shall also be liable to fine.
 
 
Illustrations : 
 
  i) A joins an insurrection against the Government of India. A has committed the offence defined in this section.
IPC Section 121A : Conspiracy to commit offences punishable by section 121
Whoever within or without India conspires to commit any of the offences punishable by section 121, or conspires to overawe, by means of criminal force or the show of criminal force, the Central Government or any State Government , shall be punished with imprisonment for life, or with imprisonment of either description which may extend to ten years, and shall also be liable to fine.
 
 
Explanations :
 
   i) To constitute a conspiracy under this section, it is not necessary that any act or illegal omission shall take place in pursuance thereof.
IPC Section 122 : Collecting arms, etc., with intention of waging war against the Government of India
Whoever collects men, arms or ammunition or otherwise prepares to wage war with the intention of either waging or being prepared to wage war against the Government of India, shall be punished with imprisonment for life or imprisonment of either description for a term not exceeding ten years, 1and shall also be liable to fine.