Which one of the following statements is incorrect with regard to ortho and para-dihydrogen

Options

(a) They are nuclear spin isomers
(b) The ortho isomer has zero nuclear spin whereas the para isomer has one nuclear spin
(c) The para isomer is favoured at low temperatures
(d) The thermal conductivity of the para isomer is 50% greater than that of the ortho isomer

Correct Answer:

The ortho isomer has zero nuclear spin whereas the para isomer has one nuclear spin

Explanation:

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