Which of the following is a property of hydrogen?
Which of the following is a property of hydrogen?
The correct option is D reducing agent
Explanation for correct option.
(D) - Reducing agent
When hydrogen is passed over hot metallic oxides like copper oxide, lead monoxide or iron oxide,
It removes oxygen from them and reduces them to their corresponding metal.
Hence hydrogen acts as a good reducing agent as it removes oxygen when it reacts with metal oxide.
Example-
Explanation for incorrect options.
(A) - Colourless and pungent.
Hydrogen is a colourless, odourless, non-poisonous and tasteless gas.
(B) - Acidic gas
Action with litmus paper - Hydrogen is a neutral gas meaning it is neither acidic nor basic. Hence, it does not react and changes the colour of either red or blue litmus paper.
(C) - Supports combustion.
Hydrogen is a combustible gas and burns with a pop sound, but is a non-supporter of combustion.
The pop sound comes from the small explosion formed by the burning of hydrogen with oxygen.
Therefore the option (D) is the correct answer.ie, reducing agent.
reducing agent
Explanation for correct option.
(D) - Reducing agent
When hydrogen is passed over hot metallic oxides like copper oxide, lead monoxide or iron oxide,
It removes oxygen from them and reduces them to their corresponding metal.
Hence hydrogen acts as a good reducing agent as it removes oxygen when it reacts with metal oxide.
Example-
Explanation for incorrect options.
(A) - Colourless and pungent.
Hydrogen is a colourless, odourless, non-poisonous and tasteless gas.
(B) - Acidic gas
Action with litmus paper - Hydrogen is a neutral gas meaning it is neither acidic nor basic. Hence, it does not react and changes the colour of either red or blue litmus paper.
(C) - Supports combustion.
Hydrogen is a combustible gas and burns with a pop sound, but is a non-supporter of combustion.
The pop sound comes from the small explosion formed by the burning of hydrogen with oxygen.
Therefore the option (D) is the correct answer.ie, reducing agent.
