Bihar GK Questions 2026

Bihar had 10,40,99,452 people in 2011, about 10.41 crore, which placed it third after Uttar Pradesh with about 19.98 crore and Maharashtra with about 11.24 crore.

The wet alluvium and the long warm monsoon of the north eastern districts, above all Katihar, Purnia and Araria, suit jute, and Bihar has long been the second largest producer of the fibre in the country after West Bengal.

The factory at Madhepura builds high powered electric locomotives for Indian Railways and is the largest new industrial unit in the north east of the state.

Banjari lies in Rohtas district, where the Kaimur hills carry the limestone that the cement works uses, and the same district once held the large paper and chemical complex of Dalmianagar.

Makhana is the puffed seed of the gorgon nut plant, grown in the shallow ponds of Darbhanga, Madhubani, Saharsa and Katihar, and almost all the makhana of the country comes from this part of Bihar.

The weavers of Bhagalpur have worked tussar silk for generations and the cloth is sold across the country as Bhagalpuri silk, which is why the city is called the silk city of Bihar.

Amjhor lies in Rohtas district in the Kaimur hills and holds the best known pyrite deposit of India.

The refinery of the Indian Oil Corporation at Barauni was built with Soviet assistance in the nineteen sixties and became the nucleus of the only heavy industrial cluster in the state, with a thermal power station, a fertiliser plant and a large dairy around it.

Jharkhand was carved out of the southern districts of Bihar on that day, which is also the birth anniversary of Birsa Munda, and the date is observed as the foundation day of the new state.

The company was registered in that year at Sakchi, the village on the Subarnarekha that grew into Jamshedpur, and the site was chosen for the iron ore, coal and water around it.

Coal, iron ore, manganese, limestone and water lie close together there, so the country's iron and steel plants crowded into it: Jamshedpur, Bokaro, Burnpur and Durgapur on its edges and Rourkela just beyond.

The Gandak rises in the Nepal Himalaya, where it is called the Narayani or the Sapta Gandaki, enters India at Valmiki Nagar in West Champaran and flows south east across north Bihar to join the Ganga opposite Patna, near Sonpur and Hajipur.

Bihar lies close to the coalfields of Jharkhand and West Bengal, and its large stations at Kahalgaon, Barh, Nabinagar, Barauni and Muzaffarpur all burn coal.

The Bansagar dam was built on the Son in Shahdol district of Madhya Pradesh, and because the river flows on into Uttar Pradesh and then joins the Ganga in Bihar, the three states signed an agreement to share its water and its cost.

Bhartiya Rail Bijlee Company Limited was formed as a joint venture between NTPC and the Ministry of Railways to build a coal fired station at Nabinagar in Aurangabad district, with most of its power dedicated to the traction and other needs of the railways.

Barauni in Begusarai district grew into an industrial centre around its oil refinery and fertiliser works, and the thermal station built there in the early decades after independence was the first large generating station of the state.

The Kahalgaon super thermal power station, run by NTPC, stands at Kahalgaon on the Ganga in Bhagalpur district of eastern Bihar, close to the coal routes from the Jharkhand and Bengal fields and to the river that supplies its cooling water.

The Tirhut canal is the main eastern canal of the Gandak project and takes its name from the old Tirhut region of north Bihar.

The Kosi comes down from Nepal carrying an enormous load of silt, drops it on the flat plain and so keeps raising its own bed.

The Kosi barrage stands at Bhimnagar in Supaul district, where the river enters India from Nepal.