which of the following is a posioned gas?

option- (a)carbondioxide (b)nitrogen(c)none of these (d) carbon monoxide

(d) carbon monoxide

(d) carbon monoxide

To determine which of the given options is a poisonous gas, you need to understand the properties of each gas and their potential health hazards.

(a) Carbon dioxide (CO2): Carbon dioxide is a natural part of Earth's atmosphere and is not inherently poisonous. However, if present in high concentrations, it can displace oxygen in confined spaces, leading to suffocation. CO2 is not considered a poisonous gas.

(b) Nitrogen (N2): Nitrogen is the majority component of Earth's atmosphere and is not poisonous. It is an inert gas and does not react with other substances in environments humans typically encounter, so it is generally considered safe.

(c) None of these: This option indicates that none of the given gases are poisonous. However, we cannot make a conclusion solely based on this answer choice.

(d) Carbon monoxide (CO): Carbon monoxide is a highly poisonous gas and is known for its lack of color, odor, and taste. It is produced by incomplete combustion of carbon-containing substances such as gasoline, wood, and natural gas. Inhaling carbon monoxide interferes with the body's ability to transport oxygen, leading to carbon monoxide poisoning, which can be fatal.

In conclusion, the correct answer is (d) carbon monoxide as it is the only gas among the given options that is considered poisonous.