Generally how many sessions are there in the Lok Sabha?

At which of the following stages general discussion on a Bill takes place in the Lok Sabha?

Session of Lok Sabha is called for at least-

The term of the Lok Sabha:

What will be happened if President summons for the joint session of Parliament and in the meantime Lok Sabha dissolved?

Who among the following has the right to vote in the elections to both the Lok Sabha and the Rajya Sabha?