Chemistry - Study Mode
[#596] Ozone layer of atmosphere absorbs:
Correct Answer
(A) Ultraviolet rays
Explanation
Solution: The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
[#597] Air shows the property of
Correct Answer
(C) Both A and B
Explanation
Solution: Air is mixture of different types of gases therefore it also shows the property of gases like Nitrogen and Oxygen.
[#598] The most abundant constituent of atmospheric air is :
Correct Answer
(D) Nitrogen
Explanation
Solution: Air is the name given to the atmosphere used in breathing and photosynthesis. Dry air contains roughly (by volume) 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
[#599] The percentage of oxygen in air is approximately
Correct Answer
(D) 21%
Explanation
Solution: It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.
[#600] The percentage of Nitrogen in Air is
Correct Answer
(C) 78.03
Explanation
Solution: The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.