NDA2021General AbilityGeneral ScienceActual
Which one of the following statements about dihydrogen ( H ₂ ) is n o t correct?
Options
- AH ₂ is lighter than air and insoluble in water.
- BH ₂ is inert at room temperature due to high H - H bond dissociation enthalpy.
- CH ₂ reacts with alkali metals at high temperature to yield metal hydrides.
- DA mixture of NO ₂ and H ₂ is known as Syngas.
Correct answer
D. A mixture of NO ₂ and H ₂ is known as Syngas.
Step-by-step solution
Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide. The name comes from its use as intermediates in creating synthetic natural gas (SNG) and for producing ammonia or methanol.