Dear aspirant!

Hope you are doing well ! In every competitive exam you have a option whether you can give your exam in hindi or in English .You can choose one of them if you choose english then you will give whole paper in english you can't write a word in hindi , similarly in uppcs if you want to give your optional in english then it will not, you have to give that exam in hindi too like other subjects

Hope you understand!

Thanking you!