Question

Which of the following acidic gas is greenish yellow in colour?

• A. $C{O}_2$
• B. $S{O}_2$
• C. $C{l}_2$
• D. All of the above

Answer 1

The correct option is C $C{l}_2$

Chlorine is in the halogen group (17) and is the second lightest halogen following fluorine. The element is a yellow-green gas under standard conditions, where it forms diatomic molecules. Chlorine turns moist blue litmus red.