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🌏 Geography of Bihar Chapter 2: Physical Divisions of Bihar (भौतिक विभाग)

Module 4: The Southern Plain

📖 Chapter 2 of 17 🧩 Module 4 of 6 ⏱️ ~2 min read 💡 6 MCQs
Topic Part 1 of 2

Concept

Subtopic 4.1: The Southern Plain

  • The southern plain extends from the south bank of the Ganga to the Chotanagpur plateau. It is mostly flat, but isolated hills break its uniformity: Gaya (266 m), Rajgir (466 m), Kharagpur (510 m), Giriyak and Barabar.
  • Area is about 33,670 sq km. It is wider in the west and middle and narrows in the east near the Rajmahal hills.
  • Main rivers: Son, Karmanasha, Punpun, Falgu and their tributaries. Hills of Gaya district: Barabar, Ramshila, Pretshila, Jethian; others: Rajgir, Giriyak, Pir Pahari (Bihar Sharif), Sheikhpura, Parvati.
  • The plain slopes from south to north. It was built by sediments from the Chotanagpur plateau; sandy soil lets water soak in, so groundwater is plentiful.
  • The Ganga builds natural levees higher than nearby land, so rivers flow parallel to it and form a pinnate drainage pattern.
  • Behind the levees lies the low waterlogged Tal region from Patna to Lakhisarai (Barhiya, Mokama, Fatuha, Bakhtiyarpur, Barh, Mor, Singhaul). It is waterlogged in the rainy season.
  • Three divisions: Son–Ganga doab, Magadh plain, Anga plain.
  • Rivers of south Bihar are not perennial (not sadaneera), so Khadar plains occur in the sloping areas. The raised embankment prevents Punpun, Falgu and others from joining the Ganga directly.
⭐ Key Points
  • Kharagpur (510 m) exceeds Rajgir (466 m) and Gaya (266 m).
  • From the Ganga's south bank to Chotanagpur.
  • These are the three sub-regions.
  • Tal region: Patna to Lakhisarai.
  • Natural levees cause parallel flow and pinnate drainage.
  • They are not sadaneera (not perennial).
📌 One-line Q&A
  • Question: Which hill is highest among those listed? Answer: Kharagpur hills, 510 m.
  • Question: The southern plain stretches up to the: Answer: Chotanagpur plateau.
  • Question: Three divisions of the southern plain are: Answer: Son–Ganga doab, Magadh plain, Anga plain.
  • Question: The Tal region extends from Patna to: Answer: Lakhisarai.
  • Question: Drainage pattern formed by rivers running parallel to the Ganga behind natural levees: Answer: Pinnate.
  • Question: Rivers of south Bihar are generally: Answer: Non-perennial.
Topic
Questions

MCQs

Answer this question, then use Next.

Question 1: Which hill is highest among those listed?

Kharagpur (510 m) exceeds Rajgir (466 m) and Gaya (266 m).

Question 2: The southern plain stretches up to the:

From the Ganga's south bank to Chotanagpur.

Question 3: Three divisions of the southern plain are:

These are the three sub-regions.

Question 4: The Tal region extends from Patna to:

Tal region: Patna to Lakhisarai.

Question 5: Drainage pattern formed by rivers running parallel to the Ganga behind natural levees:

Natural levees cause parallel flow and pinnate drainage.

Question 6: Rivers of south Bihar are generally:

They are not sadaneera (not perennial).
Question 1 of 6

One-liners

Write your answer, then submit to see the correct answer.

Which hill is highest among those listed?

Kharagpur hills, 510 m.

The southern plain stretches up to the:

Chotanagpur plateau.

Three divisions of the southern plain are:

Son–Ganga doab, Magadh plain, Anga plain.

The Tal region extends from Patna to:

Lakhisarai.

Drainage pattern formed by rivers running parallel to the Ganga behind natural levees:

Pinnate.

Rivers of south Bihar are generally:

Non-perennial.
Question 1 of 6