Multiple choice

Algal biofuel is an alternative to fossil fuel in this modern era. Which among the following biofuels is made from algae by using only a solar-powered biorefinery?

  1. Biogasoline

  2. Butanol

  3. Methane

  4. Biodiesel

  5. Green diesel
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Butanol can be made from algae or diatoms using only a solar-powered biorefinery. This fuel has an energy density 10% less than gasoline, and greater than that of either ethanol or methanol. In most gasoline engines, butanol can be used in place of gasoline with no modifications.

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