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Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

In hydrogen economy, energy required for automobiles or electrical energy is obtained from the reaction between _____ and oxygen.

  1. hydrogen

  2. oxygen

  3. silver

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

In hydrogen economy, energy required for automobiles or electrical energy is obtained from the reaction between hydrogen and oxygen.
This eliminates the use of carbon based fossil fuels. It reduces emission of carbon dioxide gas. Hydrogen acts as energy carrier as a substitute for petroleum reserves that are in short supply.

Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

Hydrogen can be prepared on commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of $CO$ and $H _2$ gas is formed called:

  1. water gas

  2. syngas

  3. producer gas

  4. industrial gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mixture of $CO$ and ${ H } _{ 2 }$ is called water gas. As the mixture of $CO$, $CO _2$ and ${ H } _{ 2 }$ is used for the synthesis of methanol and a no. of hydrocarbon, it is also called synthesis gas or 'syngas'.

Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

The usage of dihydrogen is:

  1. It acts a a fuel cell

  2. Energy is distributed in the form of dihydrogen

  3. It is economical fuel

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dihydrogen fuel is a zero-emission fuel when burned with oxygen (if one considers water not as an emission) or used in a contained cell. The energy released enables hydrogen to act as a fuel. In an electrochemical cell, that energy can be used with relatively high efficiency.

Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

Hydrogen gas is:

  1. has high molecular weight.

  2. a medium for storage of energy

  3. excellent fuel

  4. both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen is not found in pure form on Earth, however, so it must be produced from other compounds such as natural gas, biomass, alcohols or water. In all cases it takes energy to convert these into pure hydrogen. For that reason, hydrogen is really an energy carrier or storage medium rather than an energy source in itself.

Multiple choice chemistry non-metals dihydrogen fuel dihydrogen as a fuel introduction to hydrogen

Basic principle of hydrogen economy is:

  1. transportation of energy in the form of liquid or gaseous dihydrogen

  2. storage of energy in the form of liquid or gaseous dihydrogen
  3. both $A$ and $B$

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

The usage of hydrogen as a low-carbon energy source, such as gasoline as a transport fuel, it is referred to as "Hydrogen economy". The basic principles of Hydrogen economy are:-

(i) Storage of energy in the form of liquid or gaseous dihydrogen.
(ii) transportation of energy in the form of liquid or gaseous dihydrogen.
Thus the answer is both (A) and (B).