Tag: alternative fuels and energy sources

Questions Related to alternative fuels and energy sources

The nuclear reaction-
${ _{ 1 }^{ 2 }{ H } } +{ _{ 1 }^{ 2 }{ H } } _{  }\longrightarrow { _{ 2 }^{ 4 }{ He } }$ is called:

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

  1. fission reaction

  2. fusion reaction

  3. chain reaction

  4. thermal reaction

Show answer
Correct Option: B
Explanation:

Nuclear fusion is a process where two or more nuclei combine to form an element with a higher atomic number (more protons in the nucleus). Fusion is the reverse process of nuclear fission.

The nuclear reaction -
${ _{ 1 }^{ 2 }{ H } } +{ _{ 1 }^{ 2 }{ H } } _{  }\longrightarrow { _{ 2 }^{ 4 }{ He } }$ is fusion reaction because two nuclei combine to form an element with higher atomic number.During this process, 0.7% of the mass is carried away from the system in the form of kinetic energy.
So the answer is B.

The main component of Bio gas is ___________.

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

  1. Methane

  2. Benzene

  3. Ethylene

  4. Ethane

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Correct Option: A
Explanation:

The main component of bio gas is methane.
Methane is also the important constituent (95%) of natural gas. Methane has high heat of combustion. Hence, it is used as fuel.
$CH _4 + 2O _2 \rightarrow CO _2 + 2H _2O + heat$

Hydrogen can act as:

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

  1. storage medium

  2. transport medium

  3. both A and B

  4. none of above

Show answer
Correct Option: C
Explanation:

Hydrogen is both a storage and transport energy medium that can connect the energy source to the energy consumer.

Why are metal pipes not an ideal means of transport for pure hydrogen?

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

  1. They become brittle

  2. They burst out

  3. The metals melt

  4. None of above

Show answer
Correct Option: A
Explanation:

Pure hydrogen is the smallest element and some of it will inevitably escape from any known container or pipe in micro amounts. It causes the metal to become brittle, suggesting metal pipes may not be ideal for hydrogen transport.

State true or false.
Biogas is very costly and inconvenient fuel for rural areas.  
chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

  1. True

  2. False

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Correct Option: B
Explanation:
The given statement is false.
Bio-gas is an economic and convenient fuel for rural areas.

Which is not the possible solution for energy crisis?

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

  1. Wars and attacks

  2. Energy Simulation

  3. Perform energy audit

  4. Common stand on climate change

Show answer
Correct Option: A
Explanation:

An electricity shortage is felt most acutely in heating, cooking, and water supply. Therefore, a sustained energy crisis may become a humanitarian crisis.

If an energy shortage is prolonged a crisis management phase is enforced by authorities. Energy audits may be conducted to monitor usage. Various curfews with the intention of increasing energy conservation may be initiated to reduce consumption.

Wars and attacks do not solve the problem of energy crisis, on the contrary they destroy the potential sources of energy.

The downsides of using hydrogen as a fuel are:

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

  1. less availability

  2. storage is complicated

  3. pollution during production

  4. all of above

Show answer
Correct Option: D
Explanation:

There are some downsides of using hydrogen as a fuel :
1.Few filling stations sell hydrogen.
2.Hydrogen must be compressed and liquefied, and then stored in tough, insulated fuel tanks.
3.Atmospheric pollution may be generated during the production of hydrogen.
4.Hydrogen fuel cells do not work at very low temperatures, and they may also require a platinum catalyst (platinum is expensive and prone to contamination by impurities).

Which of the following measures can help in controlling hydrocarbon pollution?

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

  1. Less usage of automobile

  2. Controlling population

  3. Both $A$ and $B$

  4. None of the above

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Correct Option: C
Explanation:

Less usage of automobiles and controlling population he following measures can help in controlling hydro carbon pollution
Hence option C is the correct answer.

 Methylbutane on reacting with bromine in the presence of sunlight gives mainly:

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

  1. 2-bromo 3-methylbutane

  2. 1-bromo 3-methylbutane

  3. 2-bromo 2-methylbutane

  4. 1-bromo 2-methylbutane

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Correct Option: C

______ is three times as powerful as gasoline and other fossil fuels.

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

  1. Carbon

  2. Hydrogen

  3. Oxygen

  4. None of above

Show answer
Correct Option: B
Explanation:

Hydrogen is both powerful and efficient. It is enough to provide power for powerful machines such as spaceships. Also, it is environmentally friendly and is a much safer choice compared to other fuel sources. Hydrogen is three times as powerful as gasoline and other fossil fuels. This means that it can accomplish more with less.