Renewable Energy Practice Test 8

1. Which of the following is a problem for using biomass as a source of energy?

Low calorific value

High moisture content in the surroundings

Less moisture content in the atmosphere during time of harvesting

Low intrinsic silica content

2. Which of the following parameters is used to define sustainability of biogas feedstock?

Thermal voltage

C:N ratio

Heating value

Calorific value

3. Biomass is seasonal.

True

False

4. What is hydrothermal processing?

Heating aqueous slurries of biomass at low temperatures to produce products of lower energy density

Heating aqueous slurries of biomass at low pressures to produce products of greater energy density

Heating aqueous slurries of biomass at high temperatures to produce products of lower energy density

Heating aqueous slurries of biomass at high pressures to produce products of greater energy density

5. High moisture fuels burn readily and provide more useful heat per unit mass.

True

False

6. Reflected solar radiation is used in _______

Temperate region

Equatorial region

Snowy regions

Tropical region

7. Which of the following best indicates the process of gasification?

Biomass → producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen

Producer gas and charcoal → carbon dioxide and water → carbon monoxide and hydrogen → biomass

Biomass → carbon dioxide and water → producer gas and charcoal → carbon monoxide and hydrogen

Biomass → carbon monoxide and hydrogen → carbon dioxide and water → producer gas and charcoal

8. Which of the following produces a solid hydro-char?

Hydrothermal gasification

Carbonisation

Catalytic liquefaction

Hydrothermal carbonisation

9. Which of the following organic compounds are present in biogas?

Butane gas and carbon dioxide

Sodium

Nitrogen

Methane gas and carbon dioxide

10. Which of the following are examples of woody biomass?

Fallen trees due to natural disasters

Agricultural byproducts

Columbine

Mint