सबसे हल्की गैस _________ है।
Asked in – Official Soldier GD Paper : [Assam Regt Centre, Shillong] – 27 Dec 2020
- N
- O
- H
- CO<sub>2</sub>
Gk Section Changed status to publish
Write your answer.
Asked in – Official Soldier GD Paper : [Assam Regt Centre, Shillong] – 27 Dec 2020