Worksheets5.1 3d part
Total questions: 25
Worksheet time: 13mins
Choose the incorrect option
volatile matters are those components of fuel which are readily burnt in the presence of oxygen. This is usually a mixture of aromatic hydrocarbons, Short and Long-Chain hydrocarbons, and Sulfur.
volatile matters are those components of fuel which are readily burnt in the presence of carbon monoxide. This is usually a mixture of aromatic hydrocarbons, short and long-chain hydrocarbons, and sulfur.
volatile matters are those components of fuel which are readily burnt in the presence of oxygen. This is usually a mixture of aromatic benzenes, short and long-chain hydrocarbons, and sulfur.
volatile matters are those components of fuel which are readily burnt in the presence of oxygen. This is usually a mixture of aromatic hydrocarbons, only long-chain hydrocarbons, and sulfur.
volatile matters are those components of fuel which are readily burnt in the presence of oxygen. This is usually a mixture of aromatic hydrocarbons, short and long-chain hydrocarbons, and magnesium.
What is aromatic hydrocarbons?
containing one or more six- carbon rings characteristic of the benzene series
containing no six-carbon rings characteristic of the benzene series
numerous organic compounds, such as benzene, methane
chemical compounds in which the carbon atoms are linked in open chains
all above
To which types classified the fuel based on physical state?
solid fuel
liquid fuel
gaseous fuel
all above
none above
As what energy is usually wasted?
sound, gravitational
electrical, kinetic
electrical, sound
heat, sound
What is non renewable energy resources?
the artificially occurring resources
the naturally occurring resource that cannot be replaced and will end one day
the naturally occurring resource that cannot be replaced and will not end one day
resources made by modification in natural resource artificially in a lab
the artificially and naturally occurring energy resources
Which coal has 2...10% of trapped water?
anthracite
bituminous
lignite
peat
sub-bituminous
Choose the disadvantage of solid fuels
their ash content is high
their cost of production is high
they are hard to transport
they are unconvenient to store
their cost of handling is low
How much % weight of ash content in lignite?
10-20%
45-85%
85-98%
10-50%
30-60%
Choose the non-renewable energy source
fossil fuel
solar energy
biomass
wind energy
geothermal energy
How is heat primarily transferred through the collision of particles in a material?
conduction
convection
radiation
compression
expansion
In an electrical circuit, what is the flow of electric charge carriers that transfers energy?
protons
electrons
neutrons
photons
positrons
What is the predominant method of energy transfer in fluids through the movement of the actual substance?
conduction
convection
radiation
insulation
refraction
Which energy transfer mechanism relies on electromagnetic waves and can occur without the need for a medium?
conduction
convection
radiation
fusion
diffusion
What is the typical range of moisture content in trees before drying?
5-10%
25-50%
70-80%
90-100%
15-20%
Which component of wood has the highest percentage?
cellulose
lignin
resins
water soluble compounds
moisture
Which type of coal typically yields less heat but leaves fewer ashes?
anthracite
bituminous coal
lignite
peat
charcoal
Which of the following best describes a characteristic of bituminous coal?
soft and crumbly texture
high moisture content
carbon content ranging from 46-86% (Dry basis)
low susceptibility to combustion
forms at shallow depths
What is one of the primary uses of charcoal mentioned in the passage?
fuel for spacecraft
cooking in households
industrial cooling
agricultural fertilizer
water purification
What is the primary purpose of the briquetting industry mentioned in the passage?
enhancing weather resistance
providing employment opportunities
saving fuel economy
creating alternative energy sources
minimizing transportation costs
Which properties are crucial for good briquettes according to the passage?
high moisture content and friability
low resistance to weather hazards
hardness and resistance to friability
quick disintegration in use
inability to withstand transportation stress
How is charcoal produced, according to the passage?
extraction from minerals
compression of gases
destructive distillation of wood
synthesis from petroleum
filtration of air pollutants
What are the main components of inorganic matter found in ash from the earth's crust?
silica
aluminum oxide
calcium oxide
iron oxide
potassium chloride
What are the main components of coal, and how do their percentages vary with different coal ranks?
carbon
hydrogen
oxygen
nitrogen
all of the above
What is the end-product of the thermal and diagenetic conversion of plant matter into pure carbon?
charcoal
graphite
coal
diamond
peat
Which substance is measured for its volatile matter by determining the loss of weight when heated to 950°C in the absence of air under specified conditions?
coal
wood
petroleum
natural gas
peat
