Describe about the Generic information questions

Generic information questions are divided into two key areas: classification information questions and identification information questions. Most demographic and socioeconomic questions (gender, age, family size, income group and so on) provide classification information. Conversely, respondent name, address, and other contact information provide identification information. It's advisable to collect classification information before identification information as most respondents don't like their personal information collected by researchers and this process may alienate respondent from the interview