Is Chauhan surname comes under schedule caste or tribe?

Yes in center uttarpradesh people of beldar caste uses chauhan surname (like Shriram chauhan minister of BJP goverment) Beldar caste comes in S.C category. Even in Gujrat and Rajasthan people of Khatik and Gujjar uses chauhan surname Khatik comes in S.C category and gujjar comes S.T catogray. But majority people of chauhan surname and caste comes in Rajput (Kshatriya) caste.