Q. Which one of the following is not true at room temperature and pressure?
A) P_{4}O_{10} is a white solid
B) SO_{2} is a colourless gas
C) SO_{3} is a colourless gas
D) No_{2} is brown gas
Explanation
(c)
SO_{3} is colourless, crystalline transparent solid at room temperature.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.