Multiple choice

Artificial rain is caused by spraying small pellets of which of the following over clouds?

  1. Ice

  2. Dry Ice

  3. NaOH

  4. NH4Cl
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dry ice, which is solid carbon dioxide, is commonly used in cloud seeding to induce artificial rain. As it sublimes, it cools the surrounding moisture to form condensation nuclei.

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