Hydropower chain — arrange steps from resource to end-use Items: a. Electricity b. Dam c. Lights d. River e. Power House

Introduction / Context:
This question outlines the hydropower generation and utilization sequence from natural resource to consumer usage.

Given Data / Assumptions:

• River water is impounded by a Dam.
• Power House (turbines/generators) converts hydraulic energy to Electricity.
• Electricity powers Lights (end-use).

Concept / Approach:
Follow energy transformation: potential/kinetic (river) → stored/controlled (dam) → mechanical/electrical conversion (power house) → electrical distribution (electricity) → utilization (lights).

Step-by-Step Solution:
d (River) → b (Dam) → e (Power House) → a (Electricity) → c (Lights).

Verification / Alternative check:
Standard hydropower diagrams depict dam-to-powerhouse generation followed by distribution to loads.

Why Other Options Are Wrong:

• They place electricity or lights before the conversion stage, violating causality.

Common Pitfalls:
Confusing dam (storage/control) with power house (generation).

Final Answer:
d, b, e, a, c