Hi

When online classes of your 1st PUC i. e 11th class totally depends upon your college in which you are studying.

Most of the college and school had started taking online classes right after the lockdown ,  so chances are high that your college might have started taking online classes too.

For the timing of online classes and other details you need to contact your college or you can even try visiting the official page of your college as the details for the same may be there.

Also, you should do self study , you should read the chapter s and practice questions and the revise them , you can also follow a routine to utilise the lockdown time in the best way possible

Thank you