Renewable Energy Mcqs

Q:

Efficiency of water electrolysis is greater than the efficiency of steam reforming.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: Efficiency of water electrolysis is greater than the efficiency of steam reforming. However, electrolysis is not preferred because it is expensive.

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16
Q:

Which of the following uses hydrogen as fuel?

A) Vehicles B) AA battery
C) AAA battery D) Power plants
 
Answer & Explanation Answer: A) Vehicles

Explanation: Among the given options, vehicles use hydrogen as fuel. They are generally called hydrogen vehicles or hydrogen powered vehicles. These vehicles are powered using fuel cells.

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14
Q:

What is photocatalytic water splitting?

A) Splitting of water using catalyst and electricity B) Splitting of water using electricity
C) Combining hydrogen and oxygen to form water D) Splitting of water using light as catalyst
 
Answer & Explanation Answer: D) Splitting of water using light as catalyst

Explanation: Photocatalytic water splitting is an artificial photosynthesis process that is used to dissociate water into its constituents under the presence of natural or artificial light. It does not use chemical catalyst or electricity.

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14
Q:

What is hydrogen compressor do to hydrogen?

A) Increases both pressure and volume B) Decreases both pressure and volume
C) Increases pressure and decreases volume D) Decreases pressure and increases volume
 
Answer & Explanation Answer: C) Increases pressure and decreases volume

Explanation: Hydrogen compressor is a device that increases the pressure of hydrogen by reducing its volume. This results in the formation of compressed hydrogen or liquid hydrogen.

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14
Q:

What are the main components of a fuel cell?

A) Anode, cathode, electrolyte B) Anode, cathode, membrane and electrolyte (including fuel)
C) Anode, cathode D) Anode, cathode, electrolyte and connecting wires
 
Answer & Explanation Answer: B) Anode, cathode, membrane and electrolyte (including fuel)

Explanation: Fuel cell is a device that converts chemical energy to electrical energy. It consists of the two electrodes namely, anode and cathode, a proton exchange membrane through with protons flow and the electrolyte in each chamber.

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12
Q:

Cryogenic adsorption is a physical means to store hydrogen.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: Cryogenic adsorption is a physical means to store hydrogen. After adsorbing hydrogen at low temperatures, it is stored as liquid hydrogen.

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13
Q:

Hydrogen molecules are dissociated either _________ or _________ to form hydrides.

A) under sunlight or cold temperatures B) by substitution or electrolysis
C) by electrolysis or heterolytically D) homolytically or heterolytically
 
Answer & Explanation Answer: D) homolytically or heterolytically

Explanation: Hydrogen molecules are dissociated either homolytically or heterolytically to form hydrides. This technique is a chemical means to store hydrogen. Electrolysis generates hydrogen. Substitution is a type of organic reaction.

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14
Q:

How is hydrogen stored chemically?

A) As ions B) By compressing hydrogen gas
C) In the form of hydrides D) In the form of ice
 
Answer & Explanation Answer: C) In the form of hydrides

Explanation: Conventionally, hydrogen molecules are converted to hydrides and stored. Ions are intermediate species and cannot be stored. Compression of hydrogen gas is a physical means of storage.

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