Question

The colour of chlorine gas is ?

• A. red
• B. yellow
• C. purple
• D. orange

Answer 1

The correct option is B

yellow

Correct option is Option b) Yellow

• Chlorine is a yellow gas.
• As we move down in the group of the periodic table, the halogen will have a dark colour.
• So the colour of fluorine gas is pale yellow, chlorine gas is greenish-yellow, bromine gas is red-brown and iodine gas is purple in colour.
• Colour appear due to continuous chlorosis of chlorine gas.

The explanation for incorrect option

Option a) Red :

• As chlorine is a yellow gas which is charachteristic of halogens .
• Hence, this option is incorrect.

Option c)Purple :

• Purple radiations are not absorbed by chlorine thus option is incorrect.

Option d) Orange :

• Yellow is the charachteristic colour shown by halogens so this option is incorrect.

Hence Option b) Yellow is correct.