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Y’ is a colourless, odourless gaseous ai...

Y’ is a colourless, odourless gaseous air pollutant. It is highly poisonous to living beings because of its ability to block the delivery of oxygen to the organs & tissues ‘Y’ is :

A

CO

B

`CO_(2)`

C

`SO_(2)`

D

`O_(3)`

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The correct Answer is:
A
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