UPSC Prelims 2018— Question 6

**Concept and analysis:** Merchant Discount Rate (MDR) is the fee associated with a merchant accepting digital/card payments. In a card transaction, the merchant generally receives the transaction value after the applicable merchant-side charges are accounted for. MDR is therefore not a reward to the merchant or a cashback to the customer; it is a charge connected with payment acceptance and the acquiring/payment ecosystem. The question is testing precise UPSC-level identification rather than a broad association. The key is to distinguish the exact institutional, constitutional, historical, geographical, economic or scientific feature being asked. **Option-wise evaluation** **Option A:** Incorrect. The incentive given by a bank to a merchant for accepting payments through debit cards pertaining to that bank. ( is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option B:** Incorrect. The amount paid back by banks to their customers when they use debit cards for financial transactions for purchasing goods or services. is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option C:** Correct. The charge to a merchant by a bank for accepting payments from his customers through the bank’s debit cards. directly matches the concept or factual identification established in the analysis. **Option D:** Incorrect. The incentive given by the Government, to merchants for promoting digital payments by their customers through Point of Sale (PoS) machines and debit cards. is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **UPSC takeaway:** The safest way to solve this type of question is to anchor the answer in the defining feature of the concept and then test every option against that feature. Closely related institutions or terms are often used as distractors. In statement-based questions, do not judge the option as a whole before checking each statement independently. In factual questions, compare the wording of each option with the exact definition, location, institutional role, chronology or scientific property. The correct answer follows from that verification rather than from familiarity with a keyword.