Solar chimneys can be used for:

Correct option is C

Solar chimneys are primarily used for the generation of electricity. They are innovative systems that utilize solar energy to create a temperature gradient, driving airflow to turn turbines and generate power. The technology is considered sustainable and eco-friendly, leveraging renewable solar energy.
Explanation of Other Options:
· Space heating (a): While solar chimneys can contribute to passive ventilation and slight temperature regulation in buildings, this is not their primary function.
· Desalination of water (b): Solar desalination typically uses solar stills or concentrated solar power, not solar chimneys.
· Refrigeration (d): Solar chimneys cannot provide the cooling effect required for refrigeration, as they rely on natural convection for airflow.
Information Booster:
1. Principle of Operation: A solar chimney consists of a tall tower, a transparent roof at its base, and a heat-absorbing layer beneath the roof. Solar radiation heats the air, which rises through the chimney, driving turbines.
2. Key Components:
· Solar collector (to heat the air).
· Tower (to channel the airflow).
· Turbines (to generate electricity).
3. Advantages:
· Uses abundant solar energy.
· Requires low maintenance.
· Operates with zero emissions.