Q. With reference to cloud seeding, consider the following statements:
1.It is a weather modification technique that improves a cloud’s ability to produce rain or snow by introducing tiny ice nuclei into certain types of subfreezing clouds. 
2.Aluminum hydroxide is the most common chemical used for cloud seeding.
Select the correct statement using the code given below:

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: A
Notes:

Statement 1: Cloud seeding is a weather modification technique that improves a cloud’s ability to produce rain or snow by introducing tiny ice nuclei into certain types of subfreezing clouds. These nuclei provide a base for snowflakes to form.

Statement 2: The statement is incorrect. The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide).

Source: https://indianexpress.com/article/technology/science/parched-uae-turns-to-science-to-squeeze-more-rainfall-from-clouds-8120965/