25 Parts of Indian Constitution

The Union 

Chapter I – The Executive (Art.52 to 78) 
Chapter II – Parliament (Art.79 to 122) 
Chapter III – Legislative Powers of President (Art.123) 
Chapter IV – The Union Judiciary (Art. 124 to 147)
Chapter V – Comptroller and Auditor-General of India (Art.148 to 151)

The States 

Chapter I – General (Art.152) 
Chapter II – The Executive (Art.153 to 167) 
Chapter III – The State Legislature (Art.168 to 212) 
Chapter IV – Legislative Powers of Governor (Art.213) 
Chapter V – The High Courts (Art.214 to 232) 
Chapter VI – Subordinate Courts (Art.233 to 237)

Relations between the Union and the States 

Chapter I – Legislative Relations (Art.245 to 255) 
Chapter II – Administrative Relations (Art.256 to 263)

Finance, Property, Contracts and Suits 

Chapter I – Finance (Art.264 to 291) 
Chapter II – Borrowing (Art.292 to 293) 
Chapter III – Property, Contracts, Rights, Liabilities, Obligations and Suits (Art.294 to 300) 
Chapter IV – Right to Property (Art.300-A)

Official Language 

Chapter I – Language of the Union (Art.343 to 344) 
Chapter II – Regional Languages (Art.345 to 347) 
Chapter III-Language of the Supreme Court, High Courts, and so on (Art.348 to 349) 
Chapter IV-Special Directives (Art.350 to 351)