Hello, I already have a Schedule apex, that works on 3 objects to do a basic Query and update. I wanted to make this class batch. But unable to add multiple objects in Batch apex and loop around them . 

Here is how my Schedule apex looks like 

global class scheduleWorkday implements Schedulable {
   
 global void execute(SchedulableContext ctx) {

  //Get Accounts
        
        List<Account> getbdayaccount = [Select ID, Name, Address from Account where State= CT];
        
        if(!getbdayaccount .isEmpty()) {
                for(Account a : getbdayaccount ) {
                a.name = 'Test';
                a.State= 'NJ';
            }
            update getbdayaccount ;
        }

//get Leads 

   List<Lead> getPreApprovalFollow = [Select ID, Name, State, LeadSource from Lead where State = 'CT' ];
        
        if(!getPreApprovalFollow .isEmpty()) {
               for(Lead l: getPreApprovalFollow ) {
                l.LeadSource = 'Referral';
                l.State = 'NJ';
            }
            update getPreApprovalFollow ;
        }

//get Opportunities 

List<Opportunity> getopps = [Select Id, CloseDate, State from Lead where State = 'CT'];

   if(!getopps.isEmpty()){
     for(Opportunity o : getopps){
     o.CloseDate = Date.Today();
      o.State = 'CT';
}
update get opps;


}



}


}

I  tried making batch apex something like this - 

global class LeadProcessor implements Database.Batchable <SObject> {
//START METHOD
    global Database.QueryLocator start(Database.BatchableContext bc){
        String Query='Select id,LeadSource, State from Lead where state = 'CT'';
        return Database.getQueryLocator(Query);
            }
//EXECUTE METHOD
    global void execute(Database.BatchableContext bc, List<Lead> scope){
        for(Lead l: scope){
            l.LeadSource='Referral';
            l.State = 'NJ';

        }
        update scope;
    }
//FINISH METHOD
    global void finish(Database.BatchableContext bc){
       
    }
}

How can I change this batch apex to return multiple queries and update them . 

Thank you