DAILY CURRENT AFFAIRS QUIZ – 4 December, 2025

 Explanation:
SIM-binding links an app's account (WhatsApp/UPI) to a verified SIM number. Users with old KYCs or mismatched documents may be automatically logged out. Rural, elderly, and low-literacy users face the highest risk. It could disrupt digital payments and communication without adequate grievance systems. It is not intended to shut apps or increase sales.

 Explanation:
Studies flagged rising concentrations of heavy metals, pharmaceutical residues, pesticides, and industrial chemicals in major rivers. Such pollutants threaten aquatic biodiversity and human health, especially in densely populated regions. Poor enforcement of effluent rules and inadequate sewage treatment worsen the problem. Hydropower is unrelated to this concern.

 Explanation:
Sanctions on Russia have complicated financial settlements and delayed key defence deliveries, including spare parts and weapon systems. India's diversification of defence suppliers also creates adjustments. These “hard signs” reflect operational tensions within a traditionally stable partnership. Cultural or visa issues are not part of this development.

 Explanation:
A “fishbowl society” describes a condition where individuals can be observed from all directions due to pervasive digital systems. Interlinked databases, facial recognition, AI surveillance analytics, and geo-tagged IDs reduce anonymity. This creates risks of profiling, behavioural prediction, and loss of autonomy. It is a structural governance issue, not merely social-media oversharing.

 Explanation:
SIR forms are crucial documents that record investigation details and police actions. Manual formats allow tampering, missing pages, delays, and inconsistencies. Digitisation ensures timestamps, real-time updates, audit trails, and better monitoring by senior officers and courts. It aligns with wider police reforms under CCTNS. The goal is transparency, not compliance with election or court mandates.