Q: Which one of the following gases is colourless with strong odour, irritates mucous membranes at common levels, can cause cough, fatigue and interference with lung functions at higher concentration?
(a)Carbon monoxide
(b)Hydrogen
(c)Ozone
(d)Nitrogen
Correct Answer: (c)
The correct answer is (c) 'Ozone'. This question from the Science & Technology domain tests knowledge of Physics.