Question

What happens when glass rod rubbed with a piece of silk is brought near a negatively charged paper cylinder

Answer 1

when the glass rod is rubbed with silk it gets positively charged
when brought near a negatively charged paper it attracts them To its surface as unlike charges attract.

Answer 2

If a glass rod is rubbed with a piece of silk cloth it will posses positive charges and when it is brought near a negatively charged paper cylinder, there will be attraction force