Create MCQs for 6 Th standard Biology ( CBSE English )

I am looking for a freelancer who can create MCQs with 4 options, hints, and explanations on 6 th standard Biology subject. MCQs created will be used as a self-study material for the students. Explanations should be elaborate enough to understand concepts and knowledge about the topic. There should be diagrams to be shown where ever necessary. I have factorized the syllabus into sub-topics for simplicity. I want to identify the weaknesses of students by assessing answers to these MCQs. Freelancer who is good at Biology and good at English needs to apply. I need around 500 or more MCQs on around 140 sub-topics.