yes
linear polymer
no
yes
You can typically find physical science previous papers and answers on websites that specialize in educational resources, such as exam preparation websites or academic forums. You can also check with your school or university's library or academic resource center for past papers and model answers. Additionally, reaching out to your professors or teachers for guidance on where to access previous papers can also be helpful.
computer
ICSE computer science model question paper for class VI to IX
yes
economics,sociology,history,political science
Physical Model
computer based test of degree 2nd year example
You can buy from Koti, by asking Model Papers (Test Papers).
The PUC model question papers can be found at the GoPUC website. The website contains model question papers of both the old syllabus and the new syllabus.