a cylindrical volume of cross section area and length L contains a uniform mixture of three gases hydrogen Oxygen and Carbon dioxide if their ratio by volume is 1 : 3 : 4 find the time taken by a sound to travel this length L is the temperature if varies linearly from T1=51^0c T2=88^0c across the

Question : What is the correct percentage by volume of various gases in Earth's atmosphere?

Option 1: 20.95% nitrogen, 78.09% oxygen and 0.04% carbon dioxide and other greenhouse gases

Option 2: 10.95% nitrogen, 88.09% oxygen and 0.09% carbon dioxide and other greenhouse gases

Option 3: 10.95% nitrogen, 78.09% oxygen and 0.03% carbon dioxide and other greenhouse gases

Option 4: 78% nitrogen, 21% oxygen and 0.03% carbon dioxide and other greenhouse gases

Question : The highest volume of gases in the lower atmosphere is comprised of

Option 1: Hydrogen

Option 2: Carbon dioxide

Option 3: Oxygen

Option 4: Nitrogen

Question : Cooking gas is a mixture of:

Option 1: methane and ethylene

Option 2: carbon dioxide and oxygen 

Option 3: butane and propane

Option 4: carbon monoxide and carbon dioxide 

Question : The concept of "carbon sequestration" refers to:

Option 1: The process of capturing and storing carbon dioxide

Option 2: The release of carbon dioxide into the atmosphere

Option 3: The conversion of carbon dioxide into oxygen

Option 4: The absorption of carbon dioxide by plants