Tag: alternative fuels and energy sources

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Questions Related to alternative fuels and energy sources

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

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

  1. fission reaction

  2. fusion reaction

  3. chain reaction

  4. thermal reaction
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

The main component of Bio gas is ___________.

  1. Methane

  2. Benzene

  3. Ethylene

  4. Ethane
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
$CH _4 + 2O _2 \rightarrow CO _2 + 2H _2O + heat$

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

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

  1. They become brittle

  2. They burst out

  3. The metals melt

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

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

Which is not the possible solution for energy crisis?

  1. Wars and attacks

  2. Energy Simulation

  3. Perform energy audit

  4. Common stand on climate change
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

The downsides of using hydrogen as a fuel are:

  1. less availability

  2. storage is complicated

  3. pollution during production

  4. all of above
Reveal answer Fill a bubble to check yourself
D Correct answer
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).

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

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

  1. Less usage of automobile

  2. Controlling population
  3. Both $A$ and $B$

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. 2-bromo 3-methylbutane

  2. 1-bromo 3-methylbutane

  3. 2-bromo 2-methylbutane

  4. 1-bromo 2-methylbutane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bromination of alkanes is selective. The tertiary hydrogen is the most reactive, leading to the formation of the most stable radical intermediate, which results in 2-bromo-2-methylbutane.

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

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

  1. Carbon

  2. Hydrogen

  3. Oxygen

  4. None of above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.