Railway GK Questions 2026

Most scholars identify the Ghaggar, with its dry continuation the Hakra in Rajasthan and Pakistan, with the Saraswati of the Rigveda, and the neighbouring Chautang with the Drishadvati.

The Ghaggar rises in the Shivalik hills of Himachal Pradesh and comes into Haryana through Panchkula district in the extreme north-east, then turns south-west across Ambala, Kaithal, Fatehabad and Sirsa before passing into Rajasthan as the Hakra.

The Hathnikund barrage stands on the Yamuna in Yamunanagar district, where the river leaves the hills, and it replaced the older Tajewala headworks a short distance upstream.

The Yamuna comes down from Yamunotri, enters Haryana near Kalesar in Yamunanagar district and flows south along the eastern boundary of the state with Uttar Pradesh and Delhi.

West Champaran lies at the foot of the Shivaliks along the Nepal border and receives heavy rain, and its forest, in which sal is the dominant tree, is classed as tropical moist deciduous.

The gaur is the state animal of Bihar, the house sparrow is the state bird, the peepal is the state tree and the kachnar is the state flower.

It is spread across Kaimur and Rohtas districts on the Kaimur plateau in the south-west of the state, and by area it is the largest protected area in Bihar.

The Valmiki Tiger Reserve lies in West Champaran district, along the Nepal border at the foot of the Shivaliks, and it is the only tiger reserve in Bihar.

Karail is the dark, sticky clay of the Son valley and the adjoining parts of Rohtas and Bhojpur districts.

South of the Ganga, between the river and the higher ground inland, lies a stretch of low saucer-like land called tal, of which the Mokama tal is the largest.

The rivers of North Bihar come down from the young Himalaya and spread fresh silt over the plain at every flood, and that silt carries a high proportion of lime.

For agricultural planning Bihar is divided into Zone I, the north-west alluvial plain, Zone II, the north-east alluvial plain, and Zone III, the South Bihar alluvial plain, which is further subdivided into III A and III B. The division follows the two things that actually differ across the state: the…

This branch of the south-west monsoon strikes the Bengal coast, is deflected west by the Himalaya and moves up the Ganga plain, reaching Bihar in the second week of June.

Kishanganj lies in the extreme north-east of the state, in the corner nearest the Darjeeling hills and the moist Bengal duars, and it is the first part of Bihar the monsoon current reaches.

The rain comes to Bihar with the Bay of Bengal branch of the south-west monsoon, which enters from the east and loses moisture as it moves inland.

Bihar lies in the northern plain, where summers are hot, the rain comes in a single spell from the south-west monsoon between mid-June and early October, and winters are cool and dry with occasional cold waves.

The Kosi is called the Sapt Kosi because seven head streams gather in the Nepal Himalaya to make it, and of these the three main ones are the Sun Kosi from the west, the Arun from the north and the Tamur from the east.

The Phalgu, or Falgu, is formed by the union of the Lilajan and the Mohana a little above Gaya and flows past the city with a wide bed that stays sandy and dry for most of the year.

A chaur is a shallow, saucer-shaped basin in the flat North Bihar plain that holds water for much of the year because the land has almost no slope and the rivers have raised their own beds.

The sanctuary was notified in 1991 along a stretch of about sixty kilometres of the Ganga between Sultanganj and Kahalgaon in Bhagalpur district.