Which of the following gases is most toxic? (1) Carbon dioxide (2) Carbon monoxide (3) Sulphur dioxide (4) Chlorine

Which of the following gases is most toxic? (1) Carbon dioxide (2) Carbon monoxide (3) Sulphur dioxide (4) Chlorine
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(2) Carbon monoxide Explanation: Carbon monoxide (CO) is a colourless, odorless, and tasteless gas that is slightly lighter than air. It is toxic to humans and animals when encountered in higher concentrations, although it is also produced in normal animal metabolism in low quantities, and is thought to have some normal biological functions. In the atmosphere it is spatially variable, short lived, having a role in the formation of groundlevel ozone. Carbon monoxide is colourless, odorless, and tasteless, but highly toxic.
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Which of the following gases is most toxic ? (1) Carbon dioxide (2) Carbon monoxide (3) Sulphur dioxide (4) Chlorine

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Description : Ultraviolet radiations from sunlight causes a reaction that produces (a) fluorides (b) carbon monoxide (c) sulphur dioxide (d) ozone.

Last Answer : (d) ozone.

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Which of the following causes death by asphyxiation, if its presence inatmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?(A) Benzopyrene(B) Peroxyacetyl nitrate(C) Carbon monoxide(D) Sulphur dioxide

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