Biomass

Q.

Which of the following is not an example of a biomass energy source?
(a) wood (b) biogas (c) atomic energy (d) cow-dung

Q.

What is "gobar-gas"?

Q.

What is another word for Biomass?

Q.

What is biomass? What can be done to obtain bio-energy using biomass?

Q.

How is charcoal prepared?

1. When wood is boiled in water followed by evaporation, the residue is charcoal.

2. When wood is burnt in a limited supply of oxygen and water until volatile materials are removed, the residue is charcoal.

3. All of these.

4. When wood is heated with cow dung and $C{O}_2$ then the residue is charcoal.

Q.

Why is biomass dry weight?

Q.

Which of the following is more environment friendly ?
(a) burning of diesel (b) burning of coal (c) burning of charcoal (d) burning of wood

Q. The biomass left behind when sugar cane stalks are crushed to extract juice are called as?

1. Biogas
2. Bagasse
3. Bioplant
4. None of these

Q.

What is biomass used for?

Q.

(a) What is biomass ? Give three examples of biomass.
(b) Name the biomass which is still widely used as a source of heat energy in many households of our country .

Q. Match Column-I (Type of Coal) and Column-II (Carbon content percentage) in it.

$\begin{array}{cc}\text{Column - I}& \text{Column \_II}\\ \left(Typeofcoal\right)& \text{(Carbon content)}\\ \text{a. Anthracite}& \text{(i) 60\%}\\ \text{b. Bituminous}& \text{(ii) 70\%}\\ \text{c. Lignite}& \text{(iii) 85\%}\\ \text{d. Peat}& \text{(iv) 95\%}\end{array}$

1. 
   a(i), b(ii), c(iii), d(iv)
2. 
   a(ii), b(i), c(iv), d(iii)
3. 
   a(iv), b(iii), c(ii), d(i)
4. 
   a(iv), b(iii), c(i), d(ii)

Q.

How does biomass help the environment?

Q.

Distinguish between the following: Biogas and natural gas.

Q.

How much energy does a biomass plant produce?

Q. Question 5
Compare and contrast bio-mass and hydro electricity as sources of energy.

Q.

What is biomass fuel?

Q.

Way of harness of biomass energy

Q. Which of the following is not an example of a bio mass energy source?

1. 
   Wood
2. Gobar gas
3. 
   Nuclear energy
4. 
   Coal

Q.

Fill in the following blanks with suitable words :
(a) Biomass is another form in which ___ energy manifests itself.
(b) Tidal waves build up and recede ___ a day .

Q.

Which of the following is not an example of a bio-mass energy source?

1. Wood

2. Nuclear energy

3. Gobar-gas

4. Coal

Q.

Fill in the blanks with suitable words:

Sugar charcoal can be obtained by……..of sugar with concentrated sulphuric acid

Q.

Compare and contrast bio-mass and hydroelectricity as sources of energy.

Q. Question 21
What is biomass? What can be done to obtain bio-energy using biomass?

Q.

The fuel which is not obtained from biomass is :
(a) firewood (b) cow-dung cakes (c) coke (d) charcoal

Q.

Which of the following options describes the etymology of word “biomass” correctly?

1. Bio = dead organisms; Mass = amount of heat contained; Biomass = amount of heat energy contained in dead organisms.

2. Bio = Liquid; Mass = matter contained; Biomass = amount of liquid contained in any matter.

3. Bio = nonliving; Mass = matter contained; Biomass = matter produced from non-living things.

4. Bio = life or living; Mass = matter contained; Biomass = matter produced from living beings.

Q.

How is charcoal prepared?

1. When wood is heated with cow dung and CO₂ then the residue is charcoal.

2. When wood is boiled in water, after evaporation the residue is charcoal.

3. When wood is burnt in a limited supply of oxygen & water until volatile materials are removed, the residue is charcoal.

4. All of these.

Q.

Charcoal is produced by slow heating of biomass(wood generally) in absence of oxygen. How does this process make charcoal a better biomass than wood?

1. Heating increases the mass of the wood

2. Heating decreases the water content and other impurities in wood

3. Heating converts wood into petroleum

4. Heating converts wood into powder which burns better than solid wood

Q. Methane gas is an organic fuel obtained from the sources mentioned here. Which of the following is not a correct source?

1. Coal gas
2. Molasses
3. Natural gas
4. Sewage

Q. Which of these is a bio alternative to diesel?

1. Opium
2. Hibiscus
3. Jatropha
4. Marijuana

Q. Biogas is produced by the conversion of biodegradable waste matter into compost in the absence of oxygen.

1. True
2. False