NEET BIOLOGY

Detailed explanation-1: -nitrogen – 78% oxygen – 17% carbon dioxide – 4%

Detailed explanation-2: -Air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.So percent of carbon dioxide is in the air =0.04%

Detailed explanation-3: -Procedure-Lime water is added to test tube with two outlets attached to it. Air is sucked slowly from one outlet. Conclusion-Air which is sucked contains carbon dioxide which turns lime water milky.

Detailed explanation-4: -Air is mostly gas The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of other gases, too, such as carbon dioxide, neon, and hydrogen.

Detailed explanation-5: -The discovery of carbon dioxide by Joseph Black (1728-1799) marked a new era of research on the respiratory gases.