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WorksheetsBiofuels Posttest
Total questions: 50
Worksheet time: 57mins
What is the nutrient name for fats and oils?
lipids
mayonnaise
carbohydrates
lactose
What is the mole ratio of Triglyceride to methanol, needed for the transesterification reaction of forming biodiesel
1:1
3:1
1:3
What is the name of this compound?
glycerol
triglycerol
triglyceride
fatty acid methyl ester (F.A.M.E.)
What is the common name of the above substance?
glycerol
triglycerol
triglyceride
fatty acid methyl ester (F.A.M.E.)
A. biodiesel is a mixture of glycerol and along chain fatty acid.
B. biodiesel is a mixture of methyl and ethyl esters of fatty acid.
C.vegetable oils and fats are used as biofuels due to their higher energy content
D. biodiesel is composed of long chain hydrocarbons
What is petrodiesel mostly composed of?
Non-polar hydrocarbons about 12-20 carbons long
Non-polar hydrocarbons about 5-8 carbons long
Polar Hydrocarbons 12-20 carbons long
Polar hydrocarbons 5-8 carbons long
What is the main component of most biofuels?
Hydrogen
Carbon
Nitrogen
Oxygen
What is the process of converting biomass into biofuel called?
Combustion
Fermentation
Distillation
Cracking
What are the challenges in producing biofuels on a large scale?
Low production costs, abundant feedstock availability, no competition with food production, and easy scaling up of production processes.
Low production costs, limited feedstock availability, no competition with food production, and technical difficulties in scaling up production processes.
High production costs, limited feedstock availability, competition with food production, and technical difficulties in scaling up production processes.
High production costs, abundant feedstock availability, no competition with food production, and technical difficulties in scaling up production processes.
How do biofuels contribute to reducing greenhouse gas emissions?
Biofuels produce more carbon dioxide when burned.
Biofuels have no impact on greenhouse gas emissions.
Biofuels are not a renewable source of energy.
Biofuels produce less carbon dioxide when burned and can be produced from renewable sources.
What are the disadvantages of using biofuels?
Air pollution, reduced engine performance, and limited availability.
Decreased agricultural productivity, increased greenhouse gas emissions, and water pollution.
Higher production costs, limited infrastructure, and increased dependence on foreign sources of energy.
Deforestation, increased food prices, and potential negative impacts on biodiversity.
What are the advantages of using biofuels?
Reduced greenhouse gas emissions, increased energy security, and potential economic benefits.
Increased energy security, decreased greenhouse gas emissions, and potential economic drawbacks.
Increased greenhouse gas emissions, decreased energy security, and potential economic drawbacks.
Decreased energy security, increased greenhouse gas emissions, and potential economic drawbacks.
Give an example of a biofuel.
Coal
Diesel
Ethanol
Gasoline
What is a biofuel?
A biofuel is a fuel produced from non-renewable sources.
A biofuel is a fuel produced from fossil fuels.
A biofuel is a fuel produced from renewable sources.
A biofuel is a fuel produced from nuclear energy.
What is the general equation for the combustion of a hydrocarbon?
hydrocarbon + oxygen -> carbon monoxide + water
hydrocarbon + oxygen -> carbon dioxide + hydrogen
hydrocarbon + oxygen -> carbon + water
hydrocarbon + oxygen -> carbon dioxide + water
What are the products of a complete combustion reaction?
carbon monoxide and nitrogen
methane and oxygen
sulfur dioxide and hydrogen gas
carbon dioxide and water vapor
What is a combustion reaction?
A combustion reaction is a chemical reaction that occurs between a fuel and an oxidizing agent, typically producing heat and light.
A combustion reaction is a chemical reaction that occurs between a fuel and a reducing agent, typically producing heat and light.
A combustion reaction is a chemical reaction that occurs between two fuels, typically producing heat and light.
A combustion reaction is a chemical reaction that occurs between an oxidizing agent and a reducing agent, typically producing heat and light.
What daily activities require fuel?
Driving a car
Riding a school bus
Heating a building
Eating fresh food
All of the above
A fuel formed naturally in the ground from the remains of living organisms.
Fossil Fuel
Bio Fuel
Eco Fuel
Living Fuel
Which is NOT an example of FOSSIL FUELS?
Coal
Natural Gas
Ethanol
Petroleum
Resources that can be produced over and over.
Renewable Resources
Non Renewable Resources
Resources that can only be used once.
Renewable Resources
Non Renewable Resources
Which is NOT an example of a RENEWABLE RESOURCE?
Wind
Sun
Water
Coal
Biomass
The biofuel made from soybeans is:
Ethanol
Biodiesel
Select ALL of the BIOFUELS (there will be more than one answer):
Natural Gas
Biodiesel
Petroleum
Coal
Ethanol
The price of fuel affects many parts of the economy.
True
False
What is one negative effect of producing more ethanol for use as fuel?
An increase in air pollution
People buying fewer cars
Rising prices of certain food
Having to import more oil from abroad
Which of the following is an option about biofuels?
They're usually not 100% carbon neutral
They are superior to fossil fuels in most ways
Many of them emit low amounts of greenhouse gases when burned
Scientists are currently researching new sources of biofuel
Which term best describes the current state of algae-based biofuel?
Impossible
Widely available
In development
Inexpensive
Coal is a __________ energy resource.
Renewable
Non-renewable
Bioethanol is produced from
fermentation of sugars
the breakdown of organic waste
fatty acids and methanol
fatty acids and methane
Which of the following is not renewable energy?
Wind energy
Biofuels
Natural gas
Solar energy
Sustainability is about meeting the long-term ongoing needs of society, as well as immediate and short-term demands.
True
False
All fossil fuels generate CO2 when combusted.
True
False
Coal with higher percentage of carbon and lower percentage of water has higher heat of combustion.
True
False
Using fracking method to mine natural gas may pollute underground water supplies.
True
False
Biofuels are sourced from biomass (living, or recently living biological material), including plant materials and animal waste, and are renewable fuels. The main biofuels are biogas, bioethanol and biodiesel.
True
False
Production of bioethanol has two stages:
1st Stage: breakdown of starch and sugar in plant material (such as barley, wheat, corn and potato) to produce glucose using anaerobic bacteria.
2nd Stage: the fermentation of glucose to form ethanol.
True
False
Which of the following is NOT the general advantage of biofuel?
Renewable, can be replenished within relative short time
Less net carbon emissions
Is carbon neutral
Depending on the source, may generate less SO2 during combustion.
Choose the INCORRECT statement about the use of bioethanol as a fuel
Produces carbon dioxide as a product when combusted
It can be considered as carbon neutral
The glucose fermented to produce the ethanol can come from sugar cane waste
It is a renewable fuel source
What are the three types of fossil fuels?
Coal,crude oil and natural gas
Nuclear energy,methane and coal
Petroleum,crude oil,propane
Natural gas,coal,biogas
Why are fossil fuels non-renewable
They are being used up faster than they can be replenished
They cannot be replenished
They never run out
Resources that can be produced over and over.
Renewable Resources
Non Renewable Resources
Select ALL of the FOSSIL FUELS (you will choose more than one):
Ethanol
Coal
Natural Gas
Biodiesel
Petroleum
