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Renewable Energy
Biomass Energy Written Test
Quiz 1
Solution
Q.1.
Why is cellulose resistant to hydrolysis?
a) Because it consists of polysaccharides
b) Because it has a crystalline structure
c) Because it is hydrophobic
d) Because it is a polymer
Q.2.
Hemicellulose is a source of biomass accounting fromtoby ________
a) volume
b) moles
c) weight
d) molarity
Q.3.
Why does burning biomass not add to greenhouse gas emissions?
a) Because it is a clean source
b) Because it absorbs greenhouse gases to burn
c) Because it releases the same amount of greenhouses gas as burning fossil fuel does
d) Because it releases greenhouse gas that was captured and converted into other forms during its growth
Q.4.
What are the two types of moisture content in biomass?
a) Intrinsic and extrinsic
b) Higher heating value and lower heating value
c) Lower heating value and extrinsic
d) Higher heating value and intrinsic
Q.5.
What is intrinsic moisture content in biomass?
a) Moisture content of the material with the moisture content in atmosphere
b) Moisture content of the material without the influence of weather effects
c) Moisture content of the material with the influence of weather effects
d) Moisture content of the material without the moisture content in atmosphere
Q.6.
What is extrinsic moisture content?
a) Moisture content of the material with the moisture content in atmosphere
b) Moisture content of the material without the influence of weather effects
c) Moisture content of the material with the influence of weather effects
d) Moisture content evaporated to the atmosphere
Q.7.
Which of the following is a problem for using biomass as a source of energy?
a) Less moisture content in the atmosphere during time of harvesting
b) Low calorific value
c) Low intrinsic silica content
d) High moisture content in the surroundings
Q.8.
What is calorific value (CV) of a material?
a) Amount of energy content or heat value released by the material when burnt in air
b) Amount of energy content or heat value released by the material when burnt in water
c) Amount of energy content or heat value absorbed by the material when burnt in air
d) Amount of energy content or heat value absorbed by the material when burnt in water
Q.9.
What is the volatile matter in biomass?
a) The content in biomass that remains after heating
b) The content in biomass that is driven off as gas by heating
c) The biomass that is being heated
d) The moisture content in biomass
Q.10.
What is fixed carbon content in biomass?
a) The carbon content in biomass
b) The carbon content that is fixed in biomass and cannot be changed
c) The content in biomass that is driven off as gas by heating
d) The mass that remains after the releases of volatile matter on heating the biomass
Q.11.
What is cellulose made up of?
a) Polysaccharide
b) Steel
c) Carbon nano fibre
d) Silicon
Q.12.
A biomass feedstock with a high cellulose/hemi-cellulose is needed to produce ethanol.
a) True
b) False
Q.13.
Ash is the residue content is the solid residue after chemical breakdown of biomass.
a) True
b) False
Q.14.
In a bio-chemical process, the solid residue represents ________ present in biomass.
a) the quantity of biodegradable carbon
b) the quantity of biodegradable potassium
c) the quantity of non-biodegradable carbon
d) the quantity of biodegradable sodium
Q.15.
Which of the following is most impacted by the bulk-density of the biomass as-produced?
a) Calorific value
b) Storage of the fuel after processing
c) Heating value
d) Transportation and fuel storage costs
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