Qualitative questions generate numberical data or information that can be coverted into numbers. Quantitive research involves open and closed questions e.g yes or no, therefore making it easier for the respondent to answer the questionnaire. The advantages of quantitative questions is that respondents are more likely to fill in the questionnaire as it will not be time consuming as they have to tick yes or no answers. However the disadvantage is that the answers will not be specific therefore the data will be less useful.
Quantitative questions are more in depth questions to gain more information and are more specific to the purpose of the questionnaire. The advantages of these types of questions is that the answers you receive are specific therefore gaining the best possible information. However the disadvantage of qualatitive questions is that it is time consuming for the respondents and they have to think more clearly about the answers they are giving.