Tag: alternative fuels and energy sources

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Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

In a hydropower plant :

  1. electricity is extracted from water

  2. water is converted into steam to produce electricity

  3. potential energy possessed by stored water is converted into electricity

  4. kinetic energy possessed by stored water is converted into potential energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In hydropower plant, the potential energy possessed by the stored water is converted into electricity with help of a turbine of an electric generator.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

A biofuel is produced by:

  1. agricultural digestion

  2. anaerobic digestion

  3. geological process

  4. all of the above
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

$\Rightarrow$  Bio-fuels are designed to replace gasoline, diesel fuel and coal, which are called “fossil fuels” because they are made from animals and plants that died millions of years ago. 

$\Rightarrow$  Bio-fuels are made mostly from plants that have just been harvested.
$\Rightarrow$  A Bio-fuel is produced by: $Agriculture\,digestion$ and $Anaerobic\,digestion$.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Identify from the following a conventional source of energy.

  1. Solar Energy

  2. Tidal Energy

  3. Natural Gas

  4. Bio Energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Conventional energy directly mean the energy source which is fixed in nature like oil, gas and coal. In other words conventional energy is also termed as non-renewable energy sources. Their use leads to increased greenhouse gas emissions and other environmental damage. Natural gas is a fossil fuel used as a source of energy for heating, cooking, and electricity generation. It is also used as fuel for vehicles and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals. It is a non-renewable resource.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Major constituent of LPG is:

  1. ethene

  2. butane

  3. propane

  4. pentane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquefied petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles. The percentage of butane is around 70% and that of propane is around 30%.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

L.P.G. is a hydrocarbon consisting of a mixture of:

  1. methane and butane

  2. propane and butane

  3. ethane and propane

  4. ethane and butane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquefied petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles. The percentage of butane is around 70% and that of propane is around 30%.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Choose the correct statement.

  1. Hydro and wind energy plants are non-polluting sources of energy

  2. There is infinite storage of fossil fuel inside the earth

  3. Sun can be taken as an inexhaustible source of energy

  4. Waste from a nuclear power plant can be easily disposed off
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

Hydro and wind energy plants are non-polluting sources of energy as they do not emit any kind of harmful substances.

Sun can be taken as an inexhaustible source of energy.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

The power generated in a windmill: 

  1. is more in rainy season since damp air would mean more air mass hitting the blades

  2. can be increased by planting tall trees close to the tower

  3. depends on the height of the tower

  4. depends on wind velocity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Power generated in a windmill depends on the velocity of the wind. More is the velocity $\longrightarrow$ more will be the velocity of the windmills thereby generating more power.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

____________ contribute to sewer gas hazards.

  1. Improper disposal of petroleum products

  2. Only gasoline

  3. Only mineral spirits

  4. None of these.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sewer gases may include hydrogen sulphide, ammonia, $CO,SO _2,NO$, etc. Improper disposal of petroleum products such as gasoline and mineral gas spirits contribute to sewer gas hazards.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

The residue from biogas plant serves as _______manure.

  1. inorganic

  2. organic

  3. synthetic

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biogas is produced by anaerobic degradation of biological materials such as food wastes, animal and plant wastes. Biogas is produced when organic matter decomposes without oxygen in a process which is called anaerobic decomposition. Biogas consists mainly of methane, carbon dioxide and small amounts of impurities/residues.

So the residue from biogas plant serves as organic manure.