Which one of the following statements about dihydrogen (H₂) is not correct ?
[amp_mcq option1=”H₂ is lighter than air and insoluble in water.” option2=”H₂ is inert at room temperature due to high H – H bond dissociation enthalpy.” option3=”H₂ reacts with alkali metals at high temperature to yield metal hydrides.” option4=”A mixture of NO₂ and H₂ is known as Syngas.” correct=”option4″]
This question was previously asked in
UPSC NDA-1 – 2021
The statement “A mixture of NO₂ and H₂ is known as Syngas” is not correct. Syngas (synthesis gas) is primarily a mixture of carbon monoxide (CO) and hydrogen (H₂).
Syngas is a fuel gas mixture that can be produced from various carbon-containing materials like natural gas, coal, biomass, or plastic waste. It is used as a fuel or as an intermediate for the production of other chemicals like methanol and ammonia. Nitrogen dioxide (NO₂) is a toxic gas primarily associated with air pollution.