One of the allotrope of oxygen is ozone. It is a pale-blue poisonous gas with a strong odour.
A
True
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B
False
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Solution
The correct option is A True The given statement is true. One of the allotrope of oxygen is ozone. It is a pale-blue poisonous gas with a strong odour (fishy smell). More than 100 ppm of ozone in breathing air causes headache and breathing trouble.