​Electrostatic precipitators are used to control:​

Correct option is C

The correct answer is (C) air pollution.

• An electrostatic precipitator (ESP) is a device used to remove fine particles, such as dust and smoke, from a flowing gas (such as air) using the force of an induced electrostatic charge. It is widely used in industries to control air pollution.
• ESPs are used to reduce particulate matter (PM) emissions, which are a major component of air pollution caused by industries such as thermal power plants, cement manufacturing, and steel plants.
• Ionization: The air stream is passed through high-voltage electrodes that ionize the particles in the gas.
• Collection: The charged particles are attracted to oppositely charged plates, where they stick and are removed from the air stream.
• The clean air is then released, and the collected particles are disposed of properly.

Information Booster:

• Noise Pollution: This is controlled using soundproof barriers or mufflers.
• Water Pollution: Controlled using treatment plants like effluent treatment plants (ETPs) and sewage treatment plants (STPs).
• Visual Pollution: This refers to unattractive sights in the environment and is not related to ESPs.