The shadow foreign secretary has accused a TV presenter of sexism after he repeatedly quizzed her on the names of foreign politicians.

Emily Thornberry was appearing on Sky News’ Murnaghan show on Sunday morning to discuss plans to visit France and Germany for post-Brexit talks. The show’s presenter, Dermot Murnaghan, challenged her to name the French foreign minister, Jean-Marc Ayrault.

“Don’t start pub-quizzing me, Dermot,” responded Thornberry.

It was the beginning of a heated exchange in which Murnaghan also asked Thornberry to give the name and gender of Park Geun-hye, the president of South Korea, and Thornberry alleged that Murnaghan routinely asks her “pub quiz” questions when she appears on his show – a habit he apparently does not perform with her male political counterparts.

“Do you know what, what really upsets me about your attitude to me is that you do this with me. I don’t remember you doing it to anybody else, you know,” she said.

“Have you done it to [Brexit secretary] David Davis? Do Sky journalists have a go at [foreign secretary] Boris Johnson on this basis? How about [international trade secretary] Liam Fox? Do you do pub quizzes with them?”

Shadow foreign secretary accuses “patronising” Sky News presenter of sexism