In Bihar, the terms Balsundari, Tal, Karail and Balthar are used for which of the following?

Explanation

In Bihar, the terms Balsundari, Tal, Karail, and Balthar are used for soil. Various types of soils are found in the state. Alluvial soil covers the largest area in Bihar. In the Kaimur region, Balthar soil (sandy, calcareous, yellow) is found, while Khadar soil is mainly found in Muzaffarpur, Katihar, Saharsa, and Darbhanga. Terai soil is mainly found in East Champaran and West Champaran districts; Bangar soil in Patna and Rohtas districts; Balsundari soil in Saharsa, East Champaran, and West Champaran districts; and marshy soil is found in the north-western corner of Bihar.