Question
Which is the cleanest fuel for power generation ?
The correct answer is
Hydrogen
Cleanest Fuel for Power Generation
Evaluating fuels for power generation requires assessing their environmental footprint, particularly emissions and waste products.
- Hydrogen: Considered the cleanest option, hydrogen ($H_2$) produces only water ($H_2O$) as its primary emission when used in fuel cells or combusted. The reaction is $2H_2 + O_2 \rightarrow 2H_2O$. Producing hydrogen sustainably ensures minimal environmental impact.
- Coal: Combustion releases significant greenhouse gases, including carbon dioxide ($CO_2$), and other pollutants like sulfur dioxide ($SO_2$) and nitrogen oxides ($NO_x$).
- Uranium: Nuclear energy from uranium is emission-free during operation but generates radioactive waste requiring careful, long-term disposal.
- Water: Water is not a fuel source; it's essential for hydropower but not a primary energy carrier like the others listed.
Hydrogen's clean byproduct (water) makes it the leading choice for clean power generation among the options.
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Important Questions from Renewable Energy
Which gas is the major component of biogas?
In a flat-plate solar collector, the energy losses are due to
(i) Conduction
(ii) Convection
(iii) Radiation
Choose the correct answer from the code given below :
The number of sites suitable for harnessing tidal power in the world is limited to about
- Choose the INCORRECT statement about solar ponds.
- Electric power generated from an ideal wind turbines is
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