Q. In India, at the occasion of marriages, the fireworks used give green flame. Which one of the following radicals may be present?

A) $Na$
B) $K$
C) $Ba$
D) $Ca$
Explanation

(c)
$\ \ \ \ Na\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ K\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Ba\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Ca\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Sr$
yellow pale violet apple green brick red crimson

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.