BPSC · History

Bihar and Orissa Province (1912), Administrative Evolution and Jharkhand (2000)

8 min read · Updated 15 Sep 2026

Bihar and Orissa Province (1912), Administrative Evolution and Jharkhand (2000)

BPSC Prelims demand

This is a date–Act–map topic. Keep three turning points separate: Province of Bihar and Orissa on 1 April 1912; Orissa's separation and the Province of Bihar on 1 April 1936; and Jharkhand's formation under the Bihar Reorganisation Act, 2000, effective 15 November 2000.

Core timeline

Three dates, three outcomes

DateEventSafe wording
1 April 1912Province of Bihar and Orissa created from Bengal Presidency areas.“Bihar and Orissa Province formed.”
1 April 1936Orissa became a separate province; Bihar and Orissa was renamed as Bihar.“Bihar became a separate province after Orissa's bifurcation.”
15 November 2000Jharkhand formed under the Bihar Reorganisation Act, 2000.“Act enforced; existing Bihar reorganised.”

Acts and geography

ItemFact
Bihar Reorganisation Act, 2000Act No. 30 of 2000; enacted 25 August 2000; enforced 15 November 2000.
JharkhandNew state formed from the existing State of Bihar on the appointed day.
PatnaPolitical capital after Bihar and Orissa was carved out of Bengal in 1912.
RanchiTemporary headquarters of the Bihar and Orissa Government in 1912 because Patna lacked accommodation; now capital of Jharkhand.
Orissa/OdishaSeparate province from 1 April 1936; Odisha is the current state name.
Undivided BiharDo not use its former boundaries as present Bihar's map; the southern industrial/mineral belt is now largely in Jharkhand.

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