Civil Services Examination · প্রশ্ন 64
The black cotton soil of India has been formed due to the weathering of
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (B) fissure volcanic rock
ব্যাখ্যা
Black (regur) soil formed from weathering of Deccan Trap basalts, which came from fissure eruptions.