अभ्रक कोणत्या राज्यात मुबलक प्रमाणात उपलब्ध आहे? A. पश्चिम बंगाल B. मध्य प्रदेश C. बिहार D. राजस्थान

Mica occurs abundantly in the Koderma–Gaya–Hazaribagh belt, historically part of Bihar (now largely Jharkhand), which was famous as the world's leading source of mica. Andhra Pradesh and Rajasthan also have deposits.