Medium of Instruction:
The National Bank for Agriculture and Rural Development (NABARD) Grade B Exam does not have any specific requirement regarding the medium of instruction. Candidates can choose to write the exam in either English or Hindi, as per their preference. The exam is conducted in these two languages to ensure that candidates from different regions can understand and attempt the questions effectively.

Language Proficiency:
Candidates appearing for the NABARD Grade B Exam need to have a good command over the language in which they choose to write the exam. This is important because the exam comprises sections like English Language, which tests the candidate's proficiency in English. It is crucial to have a strong grasp of the language to comprehend and answer questions accurately.

English Language Section:
The English Language section in the NABARD Grade B Exam evaluates the candidate's understanding of English grammar, vocabulary, comprehension, and writing skills. It consists of questions like reading comprehension, error spotting, sentence completion, vocabulary-based questions, etc. Candidates need to have a sound knowledge of grammar rules, a wide range of vocabulary, and the ability to comprehend and analyze written passages.

Hindi Language Section:
For candidates opting to write the exam in Hindi, there is a separate section for Hindi Language. This section tests the candidate's proficiency in Hindi grammar, vocabulary, comprehension, and writing skills. It comprises questions like वाक्य शुद्धि, रिक्त स्थान की पूर्ति, पर्यायवाची/विलोम शब्द, etc. Candidates need to have a strong grasp of Hindi grammar rules, a wide range of vocabulary, and the ability to comprehend and analyze written passages in Hindi.

Conclusion:
In conclusion, the NABARD Grade B Exam does not have any specific requirement regarding the medium of instruction. Candidates can choose to write the exam in either English or Hindi. However, they need to have a good command over the language in which they choose to write the exam, as language proficiency plays a crucial role in understanding and answering the questions accurately.