Create MCQs in a prescribbed format for Chemistry 6,7 ,8 std CBSE

I am looking for freelance teachers who can create MCQs in a prescribed format for 6 th 7th and 8 th standards on CBSE syllabus for Chemistry subject. I need Hint and an explanation in detail along with the MCQs. I need MCQs on the sub topics created by me and need 4 MCQs of different difficulty levels on each sub topic.