Environmentalhard · Past Paper

Which chemical is used for 'Cloud Seeding' to induce artificial rain (which can sometimes lead to pollution)?

ASodium chloride
BSilver iodide
CPotassium permanganate
DMagnesium sulfate

✓ Correct Answer: BSilver iodide

Silver iodide has a crystal structure similar to ice and is used as a nucleus for raindrops to form.

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