Class VII Science Extra Questions
Class 7th Sample paper Questions
NCERT Books Class 7 science Questions
NCERT based sample Questions
What residue is left behind afterburning wool?
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Class VII Science Extra Questions
Class 7th Sample paper Questions
NCERT Books Class 7 science Questions
NCERT based sample Questions
The residue forms a kind of grey ball along the burning portion.