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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