Energy Sources P3L3,U11,AC1.1P2,19.26

What is the calorific value of Hydrogen?

• 37.8 to 43MJ/kg

• 141MJ/kg

• 90MJ/kg

• 50MJ/kg

Why is hydrogen considered volatile and explosive?

• It is heavier than air

• It is extremely energy intensive to manufacture

• It combusts easier than current liquid fuels

• It is extracted from water using electrolysis

What is the specific gravity of hydrogen compared to natural gas?

• 0.07

• 1.0

• 0.5

• 0.9

How is hydrogen usually extracted for use?

• From methane

• From solar energy

• From water using electrolysis

• From wind-generated electricity

What is the potential of adding 15% hydrogen to natural gas?

• Decreases CO2 emissions

• Increases CO2 emissions

• Causes appliance malfunction

• No effect on CO2 emissions

What is the primary byproduct of burning hydrogen?

• Carbon dioxide

• Water vapor

• Oxygen

• Nitrogen