Climate & Soils — Set 3
Bihar GK · जलवायु और मिट्टी · Questions 21–30 of 50
Which of the following is a key characteristic of 'Balther' soil?
Correct Answer: A. Low fertility
Balther soil is characterized by its low fertility and acidic nature. It is found in the narrow belt of the transitional zone between the Chotanagpur plateau and the South Bihar plains. It is generally yellowish-red and sandy.
Which hot dry wind blows across the plains of Bihar during summer afternoons?
Correct Answer: B. Loo
The 'Loo' is a strong, hot, and dry wind that blows across Bihar during summer afternoons. It typically occurs in the months of May and June. Exposure to it can cause heatstroke.
Compared to South Bihar, the soil in North Bihar generally has higher content of?
Correct Answer: C. Lime
The soil in North Bihar generally has a higher lime content compared to South Bihar. This is due to the calcareous nature of the alluvial deposits in the northern plains. South Bihar soils tend to be more acidic and iron-rich.
Which is statistically the coldest month of the year in Bihar?
Correct Answer: D. January
January is statistically the coldest month of the year in Bihar. During this month, temperatures can drop significantly, especially in the Gaya and Rohtas regions. Cold waves from the northwest often intensify the chill.
Soils in Bihar are generally deficient in which component?
Correct Answer: A. Nitrogen
Soils in Bihar, like most Indian soils, are generally deficient in Nitrogen and humus. Farmers often use urea or organic manure to replenish this nutrient. Phosphate content varies, but Nitrogen deficiency is widespread.
In Trewartha's climate classification, Bihar generally falls under which code?
Correct Answer: B. Caw/Cwa
In Trewartha's climate classification, Bihar falls under the 'Caw' or 'Cwa' category. This denotes a subtropical humid climate with dry winters. It signifies a monsoon-influenced weather pattern.
What is the typical color of Old Alluvial (Bhangar) soil?
Correct Answer: C. Dark Brown
Old Alluvial or Bhangar soil typically has a dark brown or pale reddish-brown color. It is more consolidated than the fresh Khadar soil. The color is due to the age of the deposit and oxidation.
The 'Hathiya' Nakshatra rains in October are crucial for which agricultural activity?
Correct Answer: D. Sowing Rabi crops
The 'Hathiya' Nakshatra rains in late September or early October are crucial for the sowing of Rabi crops. They provide the necessary soil moisture for wheat and pulses. A failure of these rains can impact winter harvest yields.
In which district is Red Sandy Soil primarily found?
Correct Answer: A. Kaimur
Red Sandy Soil is primarily found in the Kaimur district. It covers the plateau region extending into Rohtas. The soil is sandy in texture and contains iron, making it less fertile for intensive farming.
The rain-bearing winds enter Bihar from which direction?
Correct Answer: B. East
The monsoon winds enter Bihar generally from the East. They come from the Bay of Bengal branch and are deflected westward by the Himalayas. As they move west, their moisture content decreases.