भारत की संविधान सभा ने किस तिथि को देवनागरी लिपि में हिंदी को संघ की आधिकारिक भाषा के रूप में स्वीकार किया था?

During the entire exercise of the Constituent Assembly of India, the modus operandi of the Constituent Assembly, according to Granville Austin, was to follow which of the following principles? A. Secret voting during contestations B. The Principle of Accommodation C. Decision-making by Consensus D. The Art of Selection and Modification

Match the following Constituent Assembly Committees/Sub-Committees (List-I) with their respective Chairpersons (List-II): List-I (Committee/Sub-Committee): a. Rules Committee b. Provincial Constitution Committee c. Minorities Sub-Committee d. Fundamental Rights Sub-Committee List-II (Chairperson): 1. H.C. Mookherjee 2. Acharya J.B. Kripalani 3. Rajendra Prasad 4. Vallabhbhai Patel 5. B.R. Ambedkar