GK
ECOLOGY BIODIVERSITY CONSERVATION ENVIRONMENTAL ISSUES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The sequence of fossil fuels in the order of higher to lower heating value is as follows:
|
|
Coal, Petroleum, Natural Gas, Hydrogen.
|
|
|
Hydrogen, Natural Gas, Petroleum, Coal.
|
|
|
Hydrogen, Coal, Natural Gas, Petroleum.
|
|
|
Natural Gas, Petroleum, Coal, Hydrogen.
|
Explanation:
Detailed explanation-1: -Natural gas is mainly Methane and has the lowest carbon-to-hydrogen ratio of the fossil fuels and the highest calorific value of about 55 MJ/kg, although this value will be lower if the methane content in the gas is lower.
Detailed explanation-2: -Nonrenewable Resources. Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.
Detailed explanation-3: -Natural gas has the highest energy content with a value of about 50, 000 kJ per kilogram while coal has the lowest with a value of about 30, 000 kJ/kg.
There is 1 question to complete.