Question

Green fuel is:-
a. Leaded petrol
b. Unleaded petrol
c. Gasohol
d. Low sulphur diesel

Answer 1

Green fuel or biofuel is a variety of fuel distilled that extracts from plants and animal material, this type of fuel is environmentally friendly, that the behind gives the name green fuel. Bio-fuel is synthesized to protect our environmental resource.

Complete answer:
Renewable diesel is a substitute for diesel fuel that, like biodiesel which is extracted from plant or animal sources rather than fossil fuels. Biodiesel is synthesized by a process called transesterification, this process all the glycerin removes from the source oils to make methyl esters that have slightly different chemical properties than conventional petroleum-based ultra-low sulfur diesel (ULSD). In contrast, renewable diesel is synthesized by using a hydrotreating process, and its end product is chemically equivalent to ULSD, meeting the same set of materials specifications.

Because of this reason, renewable diesel is known as a drop-in fuel, so it can be used with all existing diesel vehicles and fueling infrastructure with no modifications required. It also performed in cold weather as petroleum-based ULSD.

Renewable diesel “neat” or blended is used with ULSD or with biodiesel in any proportion, including splash blending. Sulfur is found in low concentration in both ULSD and renewable diesel, due to the low concentration of sulfur they show low lubricity; blending with up to 20% biodiesel offers the advantage of improving the fuel’s lubricating properties without the use of other chemical additives. While leaded and unleaded fuel is the additive tetraethyl lead. Leaded gas was commonly used many years ago and it was discovered that lead has undesirable side effects when it was released into the air, it could be harmful to humans and other living organisms because it produces unleaded gas.

Hence, the correct answer is option (D).

Note: Gasohol is a different type of green fuel because it represents a combination of both renewable and no-renewable resources. Gasohol is a mixture of typically 90 percent gasoline with 10 percent ethanol.