Question : The gas causing acid rain in an industrial area is

Option 1: carbon dioxide

Option 2: carbon monoxide

Option 3: sulphur dioxide

Option 4: methane

Question : The gas produced in marshy places due to decomposition of vegetation is

Option 1: Carbon monoxide

Option 2: Carbon dioxide

Option 3: Sulphur dioxide

Option 4: Methane

Question : The gas used to extinguish fire is

Option 1: Neon

Option 2: Nitrogen

Option 3: Carbon dioxide

Option 4: Carbon monoxide

Question : The gas dissolved in water that makes it basic is:

Option 1: Ammonia

Option 2: Sulphur Dioxide

Option 3: Hydrogen

Option 4: Carbon Dioxide

Question : The gas that causes suffocation and death when coal or coke is burnt in a closed room is

Option 1: Methane

Option 2: Ethane

Option 3: Carbon Monoxide

Option 4: Carbon Dioxide