Atoms in molecules occupy fixed positions, connected by rigid rods. A molecule such as formic acid (methanoic acid, HCOOH) is ...
CBSE 12th Physics Answer Key 2026: On February 20, 2026, the Central Board of Secondary Education (CBSE) successfully ...
The CBSE Class 12 Physics examination concluded on February 20, 2026, with over 18 lakh students appearing across 7,574 ...