The gas, commonly known as “laughing gas” is: A) Nitrous Dioxide B) Sulfur Dioxide C) Nitrous Oxide D) Sodium Oxide Related MCQs: The gas commonly known as “Laughing gas” is: Commonly known as ‘Laughing gas’ is: Compressed Natural Gas (CNG) has the same chemical composition as that of: Which Pakistani former cricket player is popularly known as the Asian Bradman?