At room temperature the ratio of ortho and para hydrogens in dihydrogen is

At normal conditions ortho and para hydrogens are in equilibrium→ Ordinary Hydrogen under atmospheric conditions contains 75%[3] ortho and 25% para form.→ At OK [very low temperature] hydrogen gas contains only 100% of para form.i.e., At OK (or) very low temp. equilibrium moves towards para side that means O-H converted into para-H at OK.