Thanks Jonas Cruz

sorry for late reply 

will mail u a few article about that

I looking for the actual questionnaire, could not fine one yet

tomorrow will ask my friend from Health education inshallah

wasalam

zafar 

Hello, Actually there are no standard questionnaires for the knowledge assessment in any group. You can formulate according to your requirements and get it  pre validated by your colleagues/ some students. Generally this is the process followed in these studies. You can say so in your methodology about this process.

Some of the research articles have already used which you can refer. The links are given by Jonas already. 

Thanks Anjali