Climate & Soils — Set 1
Bihar GK · जलवायु और मिट्टी · Questions 1–10 of 50
In which district of Bihar is 'Piedmont Swamp Soil' primarily found?
Correct Answer: A. West Champaran
Piedmont Swamp Soil is found in the northwestern part of the West Champaran district. This soil is formed due to the dampness near the Someshwar hills. It provides suitable conditions for paddy cultivation.
According to Koppen’s classification, the climate of North Bihar falls under which category?
Correct Answer: B. Cwg
According to Koppen's climatic classification, the North Bihar region falls under the Cwg category. This indicates a mild subtropical climate with a dry winter. The southern part is sometimes classified differently due to terrain variations.
Which of the following is a characteristic of 'Balsundari' soil in Bihar?
Correct Answer: C. Rich in lime
Balsundari soil is known for having a significant lime content. It is a type of old alluvial soil found in districts like Saharsa and Darbhanga. This soil is suitable for crops like sugarcane and maize.
In which month does the summer season typically peak in Bihar?
Correct Answer: D. May
The summer season in Bihar typically reaches its peak temperatures during the month of May. Heatwaves are common during this period before the monsoon arrives. The temperature can often exceed 40 degrees Celsius in many districts.
What is the local name for the heavy clay soil found in South Bihar?
Correct Answer: A. Kewal
The heavy clay soil found in the old alluvial plains of South Bihar is locally called Kewal or Karail-Kewal. It has a high water absorption capacity which is good for rice cultivation. This soil turns into deep cracks when dry.
Which Agro-climatic Zone of Bihar includes the northwestern alluvial plains?
Correct Answer: B. Zone I
Agro-climatic Zone I covers the northwestern alluvial plains of Bihar. It includes districts like West Champaran, Siwan, and Saran. This zone is characterized by fertile alluvial soil and moderate rainfall.
Which statement correctly differentiates 'Bhangar' soil from 'Khadar' soil?
Correct Answer: C. Bhangar is old alluvium
Bhangar soil refers to the old alluvium deposited away from the flood plains. Unlike Khadar, it is not renewed annually by floods. It often contains calcareous nodules known as 'Kankars'.
Which district is generally recorded as having the lowest annual rainfall in Bihar?
Correct Answer: D. Aurangabad
Aurangabad district is generally recorded as receiving the lowest annual rainfall in Bihar. Its location in the southwestern part of the state distances it from the immediate influence of the monsoon winds. This region is often more prone to drought-like conditions.
In which district is soil rich in mica deposits commonly found?
Correct Answer: A. Nawada
Soils rich in mica deposits are commonly found in the Nawada district. This is due to the geological extension of the mica belt from the neighboring Jharkhand region. The presence of mica gives the soil a shiny appearance.
What is the primary cause of rainfall in Bihar during the winter season?
Correct Answer: B. Western Disturbances
Winter rainfall in Bihar is primarily caused by Western Disturbances. These are cyclonic storms originating from the Mediterranean region. This winter rain is highly beneficial for Rabi crops like wheat.