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Question

The colour of chlorine gas is ?


A

red

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B

yellow

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C

purple

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D

orange

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Solution

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.


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